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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 | ||
2232cac8 | 18 | #include <ctype.h> |
5ee7ecfb | 19 | #include <dirent.h> |
4f5dd394 LP |
20 | #include <errno.h> |
21 | #include <fcntl.h> | |
cea61f5c | 22 | #include <fnmatch.h> |
4f5dd394 LP |
23 | #include <limits.h> |
24 | #include <stdbool.h> | |
25 | #include <stddef.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
959e8b5d | 29 | #include <time.h> |
4f5dd394 | 30 | #include <unistd.h> |
2232cac8 | 31 | |
2c21044f | 32 | #include "conf-files.h" |
4f5dd394 LP |
33 | #include "escape.h" |
34 | #include "path-util.h" | |
915bf0f6 | 35 | #include "strbuf.h" |
07630cea | 36 | #include "string-util.h" |
84b6ad70 | 37 | #include "strv.h" |
f4cf2e5b | 38 | #include "sysctl-util.h" |
4f5dd394 | 39 | #include "udev.h" |
07630cea | 40 | #include "util.h" |
2232cac8 | 41 | |
a1525d17 | 42 | #define PREALLOC_TOKEN 2048 |
c7521974 | 43 | |
4052400f | 44 | struct uid_gid { |
912541b0 KS |
45 | unsigned int name_off; |
46 | union { | |
a1525d17 KS |
47 | uid_t uid; |
48 | gid_t gid; | |
912541b0 | 49 | }; |
4052400f KS |
50 | }; |
51 | ||
2ad8416d ZJS |
52 | static const char* const rules_dirs[] = { |
53 | "/etc/udev/rules.d", | |
54 | "/run/udev/rules.d", | |
55 | UDEVLIBEXECDIR "/rules.d", | |
4f5dd394 LP |
56 | NULL |
57 | }; | |
2ad8416d | 58 | |
4052400f | 59 | struct udev_rules { |
912541b0 | 60 | struct udev *udev; |
97f2d76d | 61 | usec_t dirs_ts_usec; |
912541b0 KS |
62 | int resolve_names; |
63 | ||
64 | /* every key in the rules file becomes a token */ | |
65 | struct token *tokens; | |
66 | unsigned int token_cur; | |
67 | unsigned int token_max; | |
68 | ||
ab06eef8 | 69 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 70 | struct strbuf *strbuf; |
912541b0 KS |
71 | |
72 | /* during rule parsing, uid/gid lookup results are cached */ | |
73 | struct uid_gid *uids; | |
74 | unsigned int uids_cur; | |
75 | unsigned int uids_max; | |
76 | struct uid_gid *gids; | |
77 | unsigned int gids_cur; | |
78 | unsigned int gids_max; | |
4052400f KS |
79 | }; |
80 | ||
915bf0f6 KS |
81 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
82 | return rules->strbuf->buf + off; | |
83 | } | |
84 | ||
85 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
86 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
87 | } | |
88 | ||
8e3ba377 | 89 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 90 | enum operation_type { |
912541b0 | 91 | OP_UNSET, |
b0f7409f | 92 | |
912541b0 KS |
93 | OP_MATCH, |
94 | OP_NOMATCH, | |
95 | OP_MATCH_MAX, | |
b0f7409f | 96 | |
912541b0 | 97 | OP_ADD, |
8e3ba377 | 98 | OP_REMOVE, |
912541b0 KS |
99 | OP_ASSIGN, |
100 | OP_ASSIGN_FINAL, | |
c7521974 KS |
101 | }; |
102 | ||
ac218d9c | 103 | enum string_glob_type { |
912541b0 | 104 | GL_UNSET, |
a1525d17 | 105 | GL_PLAIN, /* no special chars */ |
912541b0 | 106 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
107 | GL_SPLIT, /* multi-value A|B */ |
108 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
109 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
110 | }; |
111 | ||
32028733 | 112 | enum string_subst_type { |
912541b0 KS |
113 | SB_UNSET, |
114 | SB_NONE, | |
115 | SB_FORMAT, | |
116 | SB_SUBSYS, | |
32028733 KS |
117 | }; |
118 | ||
154a7b84 | 119 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 120 | enum token_type { |
912541b0 KS |
121 | TK_UNSET, |
122 | TK_RULE, | |
123 | ||
a1525d17 KS |
124 | TK_M_ACTION, /* val */ |
125 | TK_M_DEVPATH, /* val */ | |
126 | TK_M_KERNEL, /* val */ | |
127 | TK_M_DEVLINK, /* val */ | |
128 | TK_M_NAME, /* val */ | |
129 | TK_M_ENV, /* val, attr */ | |
130 | TK_M_TAG, /* val */ | |
131 | TK_M_SUBSYSTEM, /* val */ | |
132 | TK_M_DRIVER, /* val */ | |
133 | TK_M_WAITFOR, /* val */ | |
134 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 135 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
136 | |
137 | TK_M_PARENTS_MIN, | |
a1525d17 | 138 | TK_M_KERNELS, /* val */ |
912541b0 | 139 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
140 | TK_M_DRIVERS, /* val */ |
141 | TK_M_ATTRS, /* val, attr */ | |
142 | TK_M_TAGS, /* val */ | |
912541b0 KS |
143 | TK_M_PARENTS_MAX, |
144 | ||
a1525d17 | 145 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
146 | TK_M_PROGRAM, /* val */ |
147 | TK_M_IMPORT_FILE, /* val */ | |
148 | TK_M_IMPORT_PROG, /* val */ | |
149 | TK_M_IMPORT_BUILTIN, /* val */ | |
150 | TK_M_IMPORT_DB, /* val */ | |
151 | TK_M_IMPORT_CMDLINE, /* val */ | |
152 | TK_M_IMPORT_PARENT, /* val */ | |
153 | TK_M_RESULT, /* val */ | |
912541b0 KS |
154 | TK_M_MAX, |
155 | ||
156 | TK_A_STRING_ESCAPE_NONE, | |
157 | TK_A_STRING_ESCAPE_REPLACE, | |
158 | TK_A_DB_PERSIST, | |
a1525d17 KS |
159 | TK_A_INOTIFY_WATCH, /* int */ |
160 | TK_A_DEVLINK_PRIO, /* int */ | |
161 | TK_A_OWNER, /* val */ | |
162 | TK_A_GROUP, /* val */ | |
163 | TK_A_MODE, /* val */ | |
164 | TK_A_OWNER_ID, /* uid_t */ | |
165 | TK_A_GROUP_ID, /* gid_t */ | |
166 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 167 | TK_A_TAG, /* val */ |
a1525d17 | 168 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 169 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 170 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
171 | TK_A_NAME, /* val */ |
172 | TK_A_DEVLINK, /* val */ | |
173 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 174 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
175 | TK_A_RUN_BUILTIN, /* val, bool */ |
176 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 177 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
178 | |
179 | TK_END, | |
c7521974 KS |
180 | }; |
181 | ||
3f3aa9f5 | 182 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 183 | struct token { |
912541b0 KS |
184 | union { |
185 | unsigned char type; /* same in rule and key */ | |
186 | struct { | |
187 | enum token_type type:8; | |
188 | bool can_set_name:1; | |
189 | bool has_static_node:1; | |
190 | unsigned int unused:6; | |
191 | unsigned short token_count; | |
192 | unsigned int label_off; | |
193 | unsigned short filename_off; | |
194 | unsigned short filename_line; | |
195 | } rule; | |
196 | struct { | |
197 | enum token_type type:8; | |
198 | enum operation_type op:8; | |
199 | enum string_glob_type glob:8; | |
200 | enum string_subst_type subst:4; | |
201 | enum string_subst_type attrsubst:4; | |
202 | unsigned int value_off; | |
203 | union { | |
204 | unsigned int attr_off; | |
912541b0 KS |
205 | unsigned int rule_goto; |
206 | mode_t mode; | |
207 | uid_t uid; | |
208 | gid_t gid; | |
209 | int devlink_prio; | |
912541b0 KS |
210 | int watch; |
211 | enum udev_builtin_cmd builtin_cmd; | |
212 | }; | |
213 | } key; | |
214 | }; | |
4052400f KS |
215 | }; |
216 | ||
912541b0 | 217 | #define MAX_TK 64 |
4052400f | 218 | struct rule_tmp { |
912541b0 KS |
219 | struct udev_rules *rules; |
220 | struct token rule; | |
221 | struct token token[MAX_TK]; | |
222 | unsigned int token_cur; | |
4052400f KS |
223 | }; |
224 | ||
baa30fbc | 225 | #ifdef DEBUG |
9ec6e95b | 226 | static const char *operation_str(enum operation_type type) { |
912541b0 | 227 | static const char *operation_strs[] = { |
a1525d17 KS |
228 | [OP_UNSET] = "UNSET", |
229 | [OP_MATCH] = "match", | |
230 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
231 | [OP_MATCH_MAX] = "MATCH_MAX", |
232 | ||
a1525d17 | 233 | [OP_ADD] = "add", |
8e3ba377 | 234 | [OP_REMOVE] = "remove", |
a1525d17 KS |
235 | [OP_ASSIGN] = "assign", |
236 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
237 | } ; |
238 | ||
239 | return operation_strs[type]; | |
5d6a1fa6 | 240 | } |
4052400f | 241 | |
9ec6e95b | 242 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 243 | static const char *string_glob_strs[] = { |
a1525d17 KS |
244 | [GL_UNSET] = "UNSET", |
245 | [GL_PLAIN] = "plain", | |
246 | [GL_GLOB] = "glob", | |
247 | [GL_SPLIT] = "split", | |
248 | [GL_SPLIT_GLOB] = "split-glob", | |
249 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
250 | }; |
251 | ||
252 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
253 | } |
254 | ||
9ec6e95b | 255 | static const char *token_str(enum token_type type) { |
912541b0 | 256 | static const char *token_strs[] = { |
a1525d17 KS |
257 | [TK_UNSET] = "UNSET", |
258 | [TK_RULE] = "RULE", | |
912541b0 | 259 | |
a1525d17 | 260 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 261 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 262 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 263 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
264 | [TK_M_NAME] = "M NAME", |
265 | [TK_M_ENV] = "M ENV", | |
266 | [TK_M_TAG] = "M TAG", | |
267 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
268 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 269 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 270 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 271 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 272 | |
a1525d17 | 273 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 274 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 275 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 276 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
277 | [TK_M_ATTRS] = "M ATTRS", |
278 | [TK_M_TAGS] = "M TAGS", | |
279 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 280 | |
a1525d17 | 281 | [TK_M_TEST] = "M TEST", |
912541b0 | 282 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
283 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
284 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
285 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
286 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
287 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
288 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
289 | [TK_M_RESULT] = "M RESULT", | |
290 | [TK_M_MAX] = "M MAX", | |
291 | ||
292 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
293 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
294 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
295 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
296 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
297 | [TK_A_OWNER] = "A OWNER", | |
298 | [TK_A_GROUP] = "A GROUP", | |
299 | [TK_A_MODE] = "A MODE", | |
300 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
301 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
302 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 303 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 304 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
305 | [TK_A_ENV] = "A ENV", |
306 | [TK_A_TAG] = "A ENV", | |
307 | [TK_A_NAME] = "A NAME", | |
912541b0 | 308 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 309 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 310 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
311 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
312 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 313 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 314 | |
a1525d17 | 315 | [TK_END] = "END", |
912541b0 KS |
316 | }; |
317 | ||
318 | return token_strs[type]; | |
5d6a1fa6 | 319 | } |
c7521974 | 320 | |
9ec6e95b | 321 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
322 | enum token_type type = token->type; |
323 | enum operation_type op = token->key.op; | |
324 | enum string_glob_type glob = token->key.glob; | |
915bf0f6 | 325 | const char *value = str(rules, token->key.value_off); |
912541b0 KS |
326 | const char *attr = &rules->buf[token->key.attr_off]; |
327 | ||
328 | switch (type) { | |
329 | case TK_RULE: | |
330 | { | |
331 | const char *tks_ptr = (char *)rules->tokens; | |
332 | const char *tk_ptr = (char *)token; | |
333 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
334 | ||
9f6445e3 | 335 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
baa30fbc KS |
336 | &rules->buf[token->rule.filename_off], token->rule.filename_line, |
337 | idx, token->rule.token_count, | |
338 | &rules->buf[token->rule.label_off]); | |
912541b0 KS |
339 | break; |
340 | } | |
341 | case TK_M_ACTION: | |
342 | case TK_M_DEVPATH: | |
343 | case TK_M_KERNEL: | |
344 | case TK_M_SUBSYSTEM: | |
345 | case TK_M_DRIVER: | |
346 | case TK_M_WAITFOR: | |
347 | case TK_M_DEVLINK: | |
348 | case TK_M_NAME: | |
349 | case TK_M_KERNELS: | |
350 | case TK_M_SUBSYSTEMS: | |
351 | case TK_M_DRIVERS: | |
352 | case TK_M_TAGS: | |
353 | case TK_M_PROGRAM: | |
354 | case TK_M_IMPORT_FILE: | |
355 | case TK_M_IMPORT_PROG: | |
356 | case TK_M_IMPORT_DB: | |
357 | case TK_M_IMPORT_CMDLINE: | |
358 | case TK_M_IMPORT_PARENT: | |
359 | case TK_M_RESULT: | |
360 | case TK_A_NAME: | |
361 | case TK_A_DEVLINK: | |
362 | case TK_A_OWNER: | |
363 | case TK_A_GROUP: | |
364 | case TK_A_MODE: | |
83cd6b75 KS |
365 | case TK_A_RUN_BUILTIN: |
366 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 367 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 368 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
369 | break; |
370 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 371 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
372 | break; |
373 | case TK_M_ATTR: | |
f4cf2e5b | 374 | case TK_M_SYSCTL: |
912541b0 KS |
375 | case TK_M_ATTRS: |
376 | case TK_M_ENV: | |
377 | case TK_A_ATTR: | |
f4cf2e5b | 378 | case TK_A_SYSCTL: |
912541b0 | 379 | case TK_A_ENV: |
9f6445e3 | 380 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 381 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
382 | break; |
383 | case TK_M_TAG: | |
384 | case TK_A_TAG: | |
9f6445e3 | 385 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
386 | break; |
387 | case TK_A_STRING_ESCAPE_NONE: | |
388 | case TK_A_STRING_ESCAPE_REPLACE: | |
389 | case TK_A_DB_PERSIST: | |
9f6445e3 | 390 | log_debug("%s", token_str(type)); |
912541b0 KS |
391 | break; |
392 | case TK_M_TEST: | |
9f6445e3 | 393 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 394 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
395 | break; |
396 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 397 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
398 | break; |
399 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 400 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
401 | break; |
402 | case TK_A_OWNER_ID: | |
9f6445e3 | 403 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
404 | break; |
405 | case TK_A_GROUP_ID: | |
9f6445e3 | 406 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
407 | break; |
408 | case TK_A_MODE_ID: | |
9f6445e3 | 409 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
410 | break; |
411 | case TK_A_STATIC_NODE: | |
9f6445e3 | 412 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 413 | break; |
c26547d6 | 414 | case TK_A_SECLABEL: |
9f6445e3 | 415 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 416 | break; |
912541b0 | 417 | case TK_A_GOTO: |
9f6445e3 | 418 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
419 | break; |
420 | case TK_END: | |
9f6445e3 | 421 | log_debug("* %s", token_str(type)); |
912541b0 KS |
422 | break; |
423 | case TK_M_PARENTS_MIN: | |
424 | case TK_M_PARENTS_MAX: | |
425 | case TK_M_MAX: | |
426 | case TK_UNSET: | |
9f6445e3 | 427 | log_debug("unknown type %u", type); |
912541b0 KS |
428 | break; |
429 | } | |
4052400f | 430 | } |
154a7b84 | 431 | |
9ec6e95b | 432 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
433 | unsigned int i; |
434 | ||
9f6445e3 | 435 | log_debug("dumping %u (%zu bytes) tokens, %u (%zu bytes) strings", |
baa30fbc KS |
436 | rules->token_cur, |
437 | rules->token_cur * sizeof(struct token), | |
438 | rules->buf_count, | |
439 | rules->buf_cur); | |
f168c273 | 440 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 441 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
442 | } |
443 | #else | |
4052400f KS |
444 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
445 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 446 | #endif /* DEBUG */ |
c7521974 | 447 | |
9ec6e95b | 448 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
449 | /* grow buffer if needed */ |
450 | if (rules->token_cur+1 >= rules->token_max) { | |
451 | struct token *tokens; | |
452 | unsigned int add; | |
453 | ||
454 | /* double the buffer size */ | |
455 | add = rules->token_max; | |
456 | if (add < 8) | |
457 | add = 8; | |
458 | ||
459 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
460 | if (tokens == NULL) | |
461 | return -1; | |
912541b0 KS |
462 | rules->tokens = tokens; |
463 | rules->token_max += add; | |
464 | } | |
465 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
466 | rules->token_cur++; | |
467 | return 0; | |
c7521974 | 468 | } |
a27cd06c | 469 | |
9ec6e95b | 470 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 471 | unsigned int i; |
23bf8dd7 | 472 | uid_t uid = 0; |
912541b0 | 473 | unsigned int off; |
23bf8dd7 | 474 | int r; |
912541b0 KS |
475 | |
476 | /* lookup, if we know it already */ | |
477 | for (i = 0; i < rules->uids_cur; i++) { | |
478 | off = rules->uids[i].name_off; | |
915bf0f6 | 479 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 480 | uid = rules->uids[i].uid; |
912541b0 KS |
481 | return uid; |
482 | } | |
483 | } | |
23bf8dd7 TG |
484 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
485 | if (r < 0) { | |
486 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 487 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 488 | else |
279d3c9c | 489 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 | 490 | } |
912541b0 KS |
491 | |
492 | /* grow buffer if needed */ | |
493 | if (rules->uids_cur+1 >= rules->uids_max) { | |
494 | struct uid_gid *uids; | |
495 | unsigned int add; | |
496 | ||
497 | /* double the buffer size */ | |
498 | add = rules->uids_max; | |
499 | if (add < 1) | |
500 | add = 8; | |
501 | ||
502 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
503 | if (uids == NULL) | |
504 | return uid; | |
912541b0 KS |
505 | rules->uids = uids; |
506 | rules->uids_max += add; | |
507 | } | |
508 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 509 | off = rules_add_string(rules, owner); |
912541b0 KS |
510 | if (off <= 0) |
511 | return uid; | |
512 | rules->uids[rules->uids_cur].name_off = off; | |
513 | rules->uids_cur++; | |
514 | return uid; | |
154a7b84 KS |
515 | } |
516 | ||
9ec6e95b | 517 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 518 | unsigned int i; |
23bf8dd7 | 519 | gid_t gid = 0; |
912541b0 | 520 | unsigned int off; |
23bf8dd7 | 521 | int r; |
912541b0 KS |
522 | |
523 | /* lookup, if we know it already */ | |
524 | for (i = 0; i < rules->gids_cur; i++) { | |
525 | off = rules->gids[i].name_off; | |
915bf0f6 | 526 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 527 | gid = rules->gids[i].gid; |
912541b0 KS |
528 | return gid; |
529 | } | |
530 | } | |
23bf8dd7 TG |
531 | r = get_group_creds(&group, &gid); |
532 | if (r < 0) { | |
533 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 534 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 535 | else |
279d3c9c | 536 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 | 537 | } |
912541b0 KS |
538 | |
539 | /* grow buffer if needed */ | |
540 | if (rules->gids_cur+1 >= rules->gids_max) { | |
541 | struct uid_gid *gids; | |
542 | unsigned int add; | |
543 | ||
544 | /* double the buffer size */ | |
545 | add = rules->gids_max; | |
546 | if (add < 1) | |
547 | add = 8; | |
548 | ||
549 | gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); | |
550 | if (gids == NULL) | |
551 | return gid; | |
912541b0 KS |
552 | rules->gids = gids; |
553 | rules->gids_max += add; | |
554 | } | |
555 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 556 | off = rules_add_string(rules, group); |
912541b0 KS |
557 | if (off <= 0) |
558 | return gid; | |
559 | rules->gids[rules->gids_cur].name_off = off; | |
560 | rules->gids_cur++; | |
561 | return gid; | |
154a7b84 KS |
562 | } |
563 | ||
9ec6e95b | 564 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
565 | char *key; |
566 | char *val; | |
567 | size_t len; | |
568 | ||
569 | /* find key */ | |
570 | key = line; | |
571 | while (isspace(key[0])) | |
572 | key++; | |
573 | ||
574 | /* comment or empty line */ | |
575 | if (key[0] == '#' || key[0] == '\0') | |
576 | return -1; | |
577 | ||
578 | /* split key/value */ | |
579 | val = strchr(key, '='); | |
580 | if (val == NULL) | |
581 | return -1; | |
582 | val[0] = '\0'; | |
583 | val++; | |
584 | ||
585 | /* find value */ | |
586 | while (isspace(val[0])) | |
587 | val++; | |
588 | ||
589 | /* terminate key */ | |
590 | len = strlen(key); | |
591 | if (len == 0) | |
592 | return -1; | |
593 | while (isspace(key[len-1])) | |
594 | len--; | |
595 | key[len] = '\0'; | |
596 | ||
597 | /* terminate value */ | |
598 | len = strlen(val); | |
599 | if (len == 0) | |
600 | return -1; | |
601 | while (isspace(val[len-1])) | |
602 | len--; | |
603 | val[len] = '\0'; | |
604 | ||
605 | if (len == 0) | |
606 | return -1; | |
607 | ||
608 | /* unquote */ | |
609 | if (val[0] == '"' || val[0] == '\'') { | |
610 | if (val[len-1] != val[0]) { | |
9f6445e3 | 611 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
612 | return -1; |
613 | } | |
614 | val[len-1] = '\0'; | |
615 | val++; | |
616 | } | |
617 | ||
df546eb5 | 618 | udev_device_add_property(dev, key, val); |
0aa5b4d1 | 619 | |
912541b0 | 620 | return 0; |
be4bedd1 KS |
621 | } |
622 | ||
9ec6e95b | 623 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
624 | FILE *f; |
625 | char line[UTIL_LINE_SIZE]; | |
626 | ||
47ef94ac | 627 | f = fopen(filename, "re"); |
912541b0 KS |
628 | if (f == NULL) |
629 | return -1; | |
630 | while (fgets(line, sizeof(line), f) != NULL) | |
631 | import_property_from_string(dev, line); | |
632 | fclose(f); | |
633 | return 0; | |
bd0ed2ff KS |
634 | } |
635 | ||
dd5eddd2 KS |
636 | static int import_program_into_properties(struct udev_event *event, |
637 | usec_t timeout_usec, | |
67117413 | 638 | usec_t timeout_warn_usec, |
8314de1d | 639 | const char *program) { |
912541b0 KS |
640 | char result[UTIL_LINE_SIZE]; |
641 | char *line; | |
642 | int err; | |
643 | ||
bbf35206 | 644 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)); |
912541b0 KS |
645 | if (err < 0) |
646 | return err; | |
647 | ||
648 | line = result; | |
649 | while (line != NULL) { | |
650 | char *pos; | |
651 | ||
652 | pos = strchr(line, '\n'); | |
653 | if (pos != NULL) { | |
654 | pos[0] = '\0'; | |
655 | pos = &pos[1]; | |
656 | } | |
bbf35206 | 657 | import_property_from_string(event->dev, line); |
912541b0 KS |
658 | line = pos; |
659 | } | |
660 | return 0; | |
319c6700 KS |
661 | } |
662 | ||
9ec6e95b | 663 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
664 | struct udev_device *dev_parent; |
665 | struct udev_list_entry *list_entry; | |
666 | ||
3b64e4d4 TG |
667 | assert(dev); |
668 | assert(filter); | |
669 | ||
912541b0 KS |
670 | dev_parent = udev_device_get_parent(dev); |
671 | if (dev_parent == NULL) | |
672 | return -1; | |
673 | ||
912541b0 KS |
674 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
675 | const char *key = udev_list_entry_get_name(list_entry); | |
676 | const char *val = udev_list_entry_get_value(list_entry); | |
677 | ||
ece174c5 | 678 | if (fnmatch(filter, key, 0) == 0) |
df546eb5 | 679 | udev_device_add_property(dev, key, val); |
912541b0 KS |
680 | } |
681 | return 0; | |
e2ecb34f KS |
682 | } |
683 | ||
9ec6e95b | 684 | static int attr_subst_subdir(char *attr, size_t len) { |
912541b0 KS |
685 | bool found = false; |
686 | ||
687 | if (strstr(attr, "/*/")) { | |
688 | char *pos; | |
689 | char dirname[UTIL_PATH_SIZE]; | |
690 | const char *tail; | |
691 | DIR *dir; | |
692 | ||
d5a89d7d | 693 | strscpy(dirname, sizeof(dirname), attr); |
912541b0 KS |
694 | pos = strstr(dirname, "/*/"); |
695 | if (pos == NULL) | |
696 | return -1; | |
697 | pos[0] = '\0'; | |
698 | tail = &pos[2]; | |
699 | dir = opendir(dirname); | |
700 | if (dir != NULL) { | |
701 | struct dirent *dent; | |
702 | ||
703 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
704 | struct stat stats; | |
705 | ||
706 | if (dent->d_name[0] == '.') | |
707 | continue; | |
d5a89d7d | 708 | strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); |
912541b0 KS |
709 | if (stat(attr, &stats) == 0) { |
710 | found = true; | |
711 | break; | |
712 | } | |
713 | } | |
714 | closedir(dir); | |
715 | } | |
716 | } | |
717 | ||
718 | return found; | |
0ea5e96e KS |
719 | } |
720 | ||
9ec6e95b | 721 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
722 | char *linepos; |
723 | char *temp; | |
724 | ||
725 | linepos = *line; | |
726 | if (linepos == NULL || linepos[0] == '\0') | |
727 | return -1; | |
728 | ||
729 | /* skip whitespace */ | |
730 | while (isspace(linepos[0]) || linepos[0] == ',') | |
731 | linepos++; | |
732 | ||
733 | /* get the key */ | |
734 | if (linepos[0] == '\0') | |
735 | return -1; | |
736 | *key = linepos; | |
737 | ||
738 | for (;;) { | |
739 | linepos++; | |
740 | if (linepos[0] == '\0') | |
741 | return -1; | |
742 | if (isspace(linepos[0])) | |
743 | break; | |
744 | if (linepos[0] == '=') | |
745 | break; | |
8e3ba377 | 746 | if ((linepos[0] == '+') || (linepos[0] == '-') || (linepos[0] == '!') || (linepos[0] == ':')) |
912541b0 KS |
747 | if (linepos[1] == '=') |
748 | break; | |
749 | } | |
750 | ||
751 | /* remember end of key */ | |
752 | temp = linepos; | |
753 | ||
754 | /* skip whitespace after key */ | |
755 | while (isspace(linepos[0])) | |
756 | linepos++; | |
757 | if (linepos[0] == '\0') | |
758 | return -1; | |
759 | ||
760 | /* get operation type */ | |
761 | if (linepos[0] == '=' && linepos[1] == '=') { | |
762 | *op = OP_MATCH; | |
763 | linepos += 2; | |
764 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
765 | *op = OP_NOMATCH; | |
766 | linepos += 2; | |
767 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
768 | *op = OP_ADD; | |
769 | linepos += 2; | |
8e3ba377 DH |
770 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
771 | *op = OP_REMOVE; | |
772 | linepos += 2; | |
912541b0 KS |
773 | } else if (linepos[0] == '=') { |
774 | *op = OP_ASSIGN; | |
775 | linepos++; | |
776 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
777 | *op = OP_ASSIGN_FINAL; | |
778 | linepos += 2; | |
779 | } else | |
780 | return -1; | |
781 | ||
782 | /* terminate key */ | |
783 | temp[0] = '\0'; | |
784 | ||
785 | /* skip whitespace after operator */ | |
786 | while (isspace(linepos[0])) | |
787 | linepos++; | |
788 | if (linepos[0] == '\0') | |
789 | return -1; | |
790 | ||
791 | /* get the value */ | |
792 | if (linepos[0] == '"') | |
793 | linepos++; | |
794 | else | |
795 | return -1; | |
796 | *value = linepos; | |
797 | ||
798 | /* terminate */ | |
799 | temp = strchr(linepos, '"'); | |
800 | if (!temp) | |
801 | return -1; | |
802 | temp[0] = '\0'; | |
803 | temp++; | |
912541b0 KS |
804 | |
805 | /* move line to next key */ | |
806 | *line = temp; | |
807 | return 0; | |
6880b25d | 808 | } |
95776dc6 | 809 | |
6880b25d | 810 | /* extract possible KEY{attr} */ |
9ec6e95b | 811 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
812 | char *pos; |
813 | char *attr; | |
814 | ||
815 | attr = strchr(str, '{'); | |
816 | if (attr != NULL) { | |
817 | attr++; | |
818 | pos = strchr(attr, '}'); | |
819 | if (pos == NULL) { | |
9f6445e3 | 820 | log_error("missing closing brace for format"); |
912541b0 KS |
821 | return NULL; |
822 | } | |
823 | pos[0] = '\0'; | |
912541b0 KS |
824 | return attr; |
825 | } | |
826 | return NULL; | |
6880b25d | 827 | } |
95776dc6 | 828 | |
0ef254d5 | 829 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
912541b0 | 830 | enum operation_type op, |
9ec6e95b | 831 | const char *value, const void *data) { |
912541b0 KS |
832 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; |
833 | const char *attr = NULL; | |
834 | ||
29804cc1 | 835 | memzero(token, sizeof(struct token)); |
912541b0 KS |
836 | |
837 | switch (type) { | |
838 | case TK_M_ACTION: | |
839 | case TK_M_DEVPATH: | |
840 | case TK_M_KERNEL: | |
841 | case TK_M_SUBSYSTEM: | |
842 | case TK_M_DRIVER: | |
843 | case TK_M_WAITFOR: | |
844 | case TK_M_DEVLINK: | |
845 | case TK_M_NAME: | |
846 | case TK_M_KERNELS: | |
847 | case TK_M_SUBSYSTEMS: | |
848 | case TK_M_DRIVERS: | |
849 | case TK_M_TAGS: | |
850 | case TK_M_PROGRAM: | |
851 | case TK_M_IMPORT_FILE: | |
852 | case TK_M_IMPORT_PROG: | |
853 | case TK_M_IMPORT_DB: | |
854 | case TK_M_IMPORT_CMDLINE: | |
855 | case TK_M_IMPORT_PARENT: | |
856 | case TK_M_RESULT: | |
857 | case TK_A_OWNER: | |
858 | case TK_A_GROUP: | |
859 | case TK_A_MODE: | |
8a173387 | 860 | case TK_A_DEVLINK: |
912541b0 KS |
861 | case TK_A_NAME: |
862 | case TK_A_GOTO: | |
863 | case TK_M_TAG: | |
864 | case TK_A_TAG: | |
d6f116a7 | 865 | case TK_A_STATIC_NODE: |
915bf0f6 | 866 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
867 | break; |
868 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 869 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
870 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
871 | break; | |
872 | case TK_M_ENV: | |
873 | case TK_M_ATTR: | |
f4cf2e5b | 874 | case TK_M_SYSCTL: |
912541b0 KS |
875 | case TK_M_ATTRS: |
876 | case TK_A_ATTR: | |
f4cf2e5b | 877 | case TK_A_SYSCTL: |
912541b0 | 878 | case TK_A_ENV: |
c26547d6 | 879 | case TK_A_SECLABEL: |
912541b0 | 880 | attr = data; |
915bf0f6 KS |
881 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
882 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 883 | break; |
912541b0 | 884 | case TK_M_TEST: |
915bf0f6 | 885 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
886 | if (data != NULL) |
887 | token->key.mode = *(mode_t *)data; | |
888 | break; | |
889 | case TK_A_STRING_ESCAPE_NONE: | |
890 | case TK_A_STRING_ESCAPE_REPLACE: | |
891 | case TK_A_DB_PERSIST: | |
892 | break; | |
83cd6b75 | 893 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 894 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 895 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 896 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
897 | break; |
898 | case TK_A_INOTIFY_WATCH: | |
899 | case TK_A_DEVLINK_PRIO: | |
900 | token->key.devlink_prio = *(int *)data; | |
901 | break; | |
902 | case TK_A_OWNER_ID: | |
903 | token->key.uid = *(uid_t *)data; | |
904 | break; | |
905 | case TK_A_GROUP_ID: | |
906 | token->key.gid = *(gid_t *)data; | |
907 | break; | |
908 | case TK_A_MODE_ID: | |
909 | token->key.mode = *(mode_t *)data; | |
910 | break; | |
912541b0 KS |
911 | case TK_RULE: |
912 | case TK_M_PARENTS_MIN: | |
913 | case TK_M_PARENTS_MAX: | |
914 | case TK_M_MAX: | |
915 | case TK_END: | |
916 | case TK_UNSET: | |
9f6445e3 | 917 | log_error("wrong type %u", type); |
912541b0 KS |
918 | return -1; |
919 | } | |
920 | ||
921 | if (value != NULL && type < TK_M_MAX) { | |
922 | /* check if we need to split or call fnmatch() while matching rules */ | |
923 | enum string_glob_type glob; | |
924 | int has_split; | |
925 | int has_glob; | |
926 | ||
927 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 928 | has_glob = string_is_glob(value); |
912541b0 KS |
929 | if (has_split && has_glob) { |
930 | glob = GL_SPLIT_GLOB; | |
931 | } else if (has_split) { | |
932 | glob = GL_SPLIT; | |
933 | } else if (has_glob) { | |
33502ffe | 934 | if (streq(value, "?*")) |
912541b0 KS |
935 | glob = GL_SOMETHING; |
936 | else | |
937 | glob = GL_GLOB; | |
938 | } else { | |
939 | glob = GL_PLAIN; | |
940 | } | |
941 | token->key.glob = glob; | |
942 | } | |
943 | ||
944 | if (value != NULL && type > TK_M_MAX) { | |
945 | /* check if assigned value has substitution chars */ | |
946 | if (value[0] == '[') | |
947 | token->key.subst = SB_SUBSYS; | |
948 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
949 | token->key.subst = SB_FORMAT; | |
950 | else | |
951 | token->key.subst = SB_NONE; | |
952 | } | |
953 | ||
954 | if (attr != NULL) { | |
d6f116a7 | 955 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
956 | if (attr[0] == '[') |
957 | token->key.attrsubst = SB_SUBSYS; | |
958 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
959 | token->key.attrsubst = SB_FORMAT; | |
960 | else | |
961 | token->key.attrsubst = SB_NONE; | |
962 | } | |
963 | ||
964 | token->key.type = type; | |
965 | token->key.op = op; | |
966 | rule_tmp->token_cur++; | |
8fef0ff2 | 967 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) { |
9f6445e3 | 968 | log_error("temporary rule array too small"); |
912541b0 KS |
969 | return -1; |
970 | } | |
971 | return 0; | |
6880b25d | 972 | } |
e57e7bc1 | 973 | |
9ec6e95b | 974 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
975 | unsigned int i; |
976 | unsigned int start = 0; | |
977 | unsigned int end = rule_tmp->token_cur; | |
978 | ||
979 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
980 | enum token_type next_val = TK_UNSET; | |
981 | unsigned int next_idx = 0; | |
982 | unsigned int j; | |
983 | ||
984 | /* find smallest value */ | |
985 | for (j = start; j < end; j++) { | |
986 | if (rule_tmp->token[j].type == TK_UNSET) | |
987 | continue; | |
988 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
989 | next_val = rule_tmp->token[j].type; | |
990 | next_idx = j; | |
991 | } | |
992 | } | |
993 | ||
994 | /* add token and mark done */ | |
995 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
996 | return -1; | |
997 | rule_tmp->token[next_idx].type = TK_UNSET; | |
998 | ||
999 | /* shrink range */ | |
1000 | if (next_idx == start) | |
1001 | start++; | |
1002 | if (next_idx+1 == end) | |
1003 | end--; | |
1004 | } | |
1005 | return 0; | |
724257d9 GKH |
1006 | } |
1007 | ||
6880b25d | 1008 | static int add_rule(struct udev_rules *rules, char *line, |
9ec6e95b | 1009 | const char *filename, unsigned int filename_off, unsigned int lineno) { |
912541b0 | 1010 | char *linepos; |
04a9d3a0 | 1011 | const char *attr; |
84198c18 TG |
1012 | struct rule_tmp rule_tmp = { |
1013 | .rules = rules, | |
1014 | .rule.type = TK_RULE, | |
1015 | }; | |
912541b0 | 1016 | |
775f8b3c KS |
1017 | /* the offset in the rule is limited to unsigned short */ |
1018 | if (filename_off < USHRT_MAX) | |
1019 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1020 | rule_tmp.rule.rule.filename_line = lineno; |
1021 | ||
1022 | linepos = line; | |
1023 | for (;;) { | |
1024 | char *key; | |
1025 | char *value; | |
1026 | enum operation_type op; | |
1027 | ||
e736cf35 | 1028 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1029 | /* Avoid erroring on trailing whitespace. This is probably rare |
1030 | * so save the work for the error case instead of always trying | |
1031 | * to strip the trailing whitespace with strstrip(). */ | |
1032 | while (isblank(*linepos)) | |
1033 | linepos++; | |
1034 | ||
e736cf35 DR |
1035 | /* If we aren't at the end of the line, this is a parsing error. |
1036 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1037 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1038 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1039 | _cleanup_free_ char *tmp; |
1040 | ||
1041 | tmp = cescape(buf); | |
ff49bc32 | 1042 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1043 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1044 | if (*linepos == '#') |
75716dd8 | 1045 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1046 | } |
912541b0 | 1047 | break; |
e736cf35 | 1048 | } |
912541b0 | 1049 | |
33502ffe | 1050 | if (streq(key, "ACTION")) { |
912541b0 | 1051 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1052 | log_error("invalid ACTION operation"); |
912541b0 KS |
1053 | goto invalid; |
1054 | } | |
1055 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
1056 | continue; | |
1057 | } | |
1058 | ||
33502ffe | 1059 | if (streq(key, "DEVPATH")) { |
912541b0 | 1060 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1061 | log_error("invalid DEVPATH operation"); |
912541b0 KS |
1062 | goto invalid; |
1063 | } | |
1064 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); | |
1065 | continue; | |
1066 | } | |
1067 | ||
33502ffe | 1068 | if (streq(key, "KERNEL")) { |
912541b0 | 1069 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1070 | log_error("invalid KERNEL operation"); |
912541b0 KS |
1071 | goto invalid; |
1072 | } | |
1073 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); | |
1074 | continue; | |
1075 | } | |
1076 | ||
33502ffe | 1077 | if (streq(key, "SUBSYSTEM")) { |
912541b0 | 1078 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1079 | log_error("invalid SUBSYSTEM operation"); |
912541b0 KS |
1080 | goto invalid; |
1081 | } | |
1082 | /* bus, class, subsystem events should all be the same */ | |
33502ffe KS |
1083 | if (streq(value, "subsystem") || |
1084 | streq(value, "bus") || | |
1085 | streq(value, "class")) { | |
1086 | if (streq(value, "bus") || streq(value, "class")) | |
9f6445e3 | 1087 | log_error("'%s' must be specified as 'subsystem' " |
912541b0 KS |
1088 | "please fix it in %s:%u", value, filename, lineno); |
1089 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); | |
1090 | } else | |
1091 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
1092 | continue; | |
1093 | } | |
1094 | ||
33502ffe | 1095 | if (streq(key, "DRIVER")) { |
912541b0 | 1096 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1097 | log_error("invalid DRIVER operation"); |
912541b0 KS |
1098 | goto invalid; |
1099 | } | |
1100 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); | |
1101 | continue; | |
1102 | } | |
1103 | ||
33502ffe | 1104 | if (startswith(key, "ATTR{")) { |
f8294e41 | 1105 | attr = get_key_attribute(rules->udev, key + strlen("ATTR")); |
912541b0 | 1106 | if (attr == NULL) { |
9f6445e3 | 1107 | log_error("error parsing ATTR attribute"); |
912541b0 KS |
1108 | goto invalid; |
1109 | } | |
8e3ba377 DH |
1110 | if (op == OP_REMOVE) { |
1111 | log_error("invalid ATTR operation"); | |
1112 | goto invalid; | |
1113 | } | |
f4cf2e5b | 1114 | if (op < OP_MATCH_MAX) |
912541b0 | 1115 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1116 | else |
912541b0 | 1117 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b KS |
1118 | continue; |
1119 | } | |
1120 | ||
1121 | if (startswith(key, "SYSCTL{")) { | |
1122 | attr = get_key_attribute(rules->udev, key + strlen("SYSCTL")); | |
1123 | if (attr == NULL) { | |
1124 | log_error("error parsing SYSCTL attribute"); | |
1125 | goto invalid; | |
1126 | } | |
1127 | if (op == OP_REMOVE) { | |
1128 | log_error("invalid SYSCTL operation"); | |
1129 | goto invalid; | |
912541b0 | 1130 | } |
f4cf2e5b KS |
1131 | if (op < OP_MATCH_MAX) |
1132 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1133 | else | |
1134 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 KS |
1135 | continue; |
1136 | } | |
1137 | ||
c26547d6 | 1138 | if (startswith(key, "SECLABEL{")) { |
f8294e41 | 1139 | attr = get_key_attribute(rules->udev, key + strlen("SECLABEL")); |
c26547d6 | 1140 | if (!attr) { |
9f6445e3 | 1141 | log_error("error parsing SECLABEL attribute"); |
c26547d6 KS |
1142 | goto invalid; |
1143 | } | |
8e3ba377 DH |
1144 | if (op == OP_REMOVE) { |
1145 | log_error("invalid SECLABEL operation"); | |
1146 | goto invalid; | |
1147 | } | |
c26547d6 KS |
1148 | |
1149 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
1150 | continue; | |
1151 | } | |
1152 | ||
33502ffe | 1153 | if (streq(key, "KERNELS")) { |
912541b0 | 1154 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1155 | log_error("invalid KERNELS operation"); |
912541b0 KS |
1156 | goto invalid; |
1157 | } | |
1158 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); | |
1159 | continue; | |
1160 | } | |
1161 | ||
33502ffe | 1162 | if (streq(key, "SUBSYSTEMS")) { |
912541b0 | 1163 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1164 | log_error("invalid SUBSYSTEMS operation"); |
912541b0 KS |
1165 | goto invalid; |
1166 | } | |
1167 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); | |
1168 | continue; | |
1169 | } | |
1170 | ||
33502ffe | 1171 | if (streq(key, "DRIVERS")) { |
912541b0 | 1172 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1173 | log_error("invalid DRIVERS operation"); |
912541b0 KS |
1174 | goto invalid; |
1175 | } | |
1176 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); | |
1177 | continue; | |
1178 | } | |
1179 | ||
33502ffe | 1180 | if (startswith(key, "ATTRS{")) { |
912541b0 | 1181 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1182 | log_error("invalid ATTRS operation"); |
912541b0 KS |
1183 | goto invalid; |
1184 | } | |
f8294e41 | 1185 | attr = get_key_attribute(rules->udev, key + strlen("ATTRS")); |
912541b0 | 1186 | if (attr == NULL) { |
9f6445e3 | 1187 | log_error("error parsing ATTRS attribute"); |
912541b0 KS |
1188 | goto invalid; |
1189 | } | |
33502ffe | 1190 | if (startswith(attr, "device/")) |
baa30fbc | 1191 | log_error("the 'device' link may not be available in a future kernel, " |
912541b0 KS |
1192 | "please fix it in %s:%u", filename, lineno); |
1193 | else if (strstr(attr, "../") != NULL) | |
baa30fbc | 1194 | log_error("do not reference parent sysfs directories directly, " |
912541b0 KS |
1195 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); |
1196 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); | |
1197 | continue; | |
1198 | } | |
1199 | ||
33502ffe | 1200 | if (streq(key, "TAGS")) { |
912541b0 | 1201 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1202 | log_error("invalid TAGS operation"); |
912541b0 KS |
1203 | goto invalid; |
1204 | } | |
1205 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); | |
1206 | continue; | |
1207 | } | |
1208 | ||
33502ffe | 1209 | if (startswith(key, "ENV{")) { |
f8294e41 | 1210 | attr = get_key_attribute(rules->udev, key + strlen("ENV")); |
912541b0 | 1211 | if (attr == NULL) { |
9f6445e3 | 1212 | log_error("error parsing ENV attribute"); |
912541b0 KS |
1213 | goto invalid; |
1214 | } | |
8e3ba377 DH |
1215 | if (op == OP_REMOVE) { |
1216 | log_error("invalid ENV operation"); | |
1217 | goto invalid; | |
1218 | } | |
912541b0 KS |
1219 | if (op < OP_MATCH_MAX) { |
1220 | if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
1221 | goto invalid; | |
1222 | } else { | |
1223 | static const char *blacklist[] = { | |
1224 | "ACTION", | |
1225 | "SUBSYSTEM", | |
1226 | "DEVTYPE", | |
1227 | "MAJOR", | |
1228 | "MINOR", | |
1229 | "DRIVER", | |
1230 | "IFINDEX", | |
1231 | "DEVNAME", | |
1232 | "DEVLINKS", | |
1233 | "DEVPATH", | |
1234 | "TAGS", | |
1235 | }; | |
1236 | unsigned int i; | |
1237 | ||
395ea978 KS |
1238 | for (i = 0; i < ELEMENTSOF(blacklist); i++) { |
1239 | if (!streq(attr, blacklist[i])) | |
912541b0 | 1240 | continue; |
9f6445e3 | 1241 | log_error("invalid ENV attribute, '%s' can not be set %s:%u", attr, filename, lineno); |
395ea978 KS |
1242 | goto invalid; |
1243 | } | |
912541b0 KS |
1244 | if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) |
1245 | goto invalid; | |
1246 | } | |
1247 | continue; | |
1248 | } | |
1249 | ||
33502ffe | 1250 | if (streq(key, "TAG")) { |
912541b0 KS |
1251 | if (op < OP_MATCH_MAX) |
1252 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1253 | else | |
1254 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
1255 | continue; | |
1256 | } | |
1257 | ||
33502ffe | 1258 | if (streq(key, "PROGRAM")) { |
8e3ba377 DH |
1259 | if (op == OP_REMOVE) { |
1260 | log_error("invalid PROGRAM operation"); | |
1261 | goto invalid; | |
1262 | } | |
912541b0 KS |
1263 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
1264 | continue; | |
1265 | } | |
1266 | ||
33502ffe | 1267 | if (streq(key, "RESULT")) { |
912541b0 | 1268 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1269 | log_error("invalid RESULT operation"); |
912541b0 KS |
1270 | goto invalid; |
1271 | } | |
1272 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); | |
1273 | continue; | |
1274 | } | |
1275 | ||
33502ffe | 1276 | if (startswith(key, "IMPORT")) { |
f8294e41 | 1277 | attr = get_key_attribute(rules->udev, key + strlen("IMPORT")); |
912541b0 | 1278 | if (attr == NULL) { |
9f6445e3 | 1279 | log_error("IMPORT{} type missing, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1280 | continue; |
1281 | } | |
8e3ba377 DH |
1282 | if (op == OP_REMOVE) { |
1283 | log_error("invalid IMPORT operation"); | |
1284 | goto invalid; | |
1285 | } | |
33502ffe | 1286 | if (streq(attr, "program")) { |
912541b0 KS |
1287 | /* find known built-in command */ |
1288 | if (value[0] != '/') { | |
1289 | enum udev_builtin_cmd cmd; | |
1290 | ||
1291 | cmd = udev_builtin_lookup(value); | |
1292 | if (cmd < UDEV_BUILTIN_MAX) { | |
9f6445e3 | 1293 | log_debug("IMPORT found builtin '%s', replacing %s:%u", |
baa30fbc | 1294 | value, filename, lineno); |
912541b0 KS |
1295 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1296 | continue; | |
1297 | } | |
1298 | } | |
912541b0 | 1299 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1300 | } else if (streq(attr, "builtin")) { |
912541b0 KS |
1301 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1302 | ||
912541b0 KS |
1303 | if (cmd < UDEV_BUILTIN_MAX) |
1304 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
1305 | else | |
9f6445e3 | 1306 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1307 | } else if (streq(attr, "file")) { |
912541b0 | 1308 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
33502ffe | 1309 | } else if (streq(attr, "db")) { |
912541b0 | 1310 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
33502ffe | 1311 | } else if (streq(attr, "cmdline")) { |
912541b0 | 1312 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
33502ffe | 1313 | } else if (streq(attr, "parent")) { |
912541b0 | 1314 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
83cd6b75 | 1315 | } else |
9f6445e3 | 1316 | log_error("IMPORT{} unknown type, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1317 | continue; |
1318 | } | |
1319 | ||
33502ffe | 1320 | if (startswith(key, "TEST")) { |
912541b0 KS |
1321 | mode_t mode = 0; |
1322 | ||
1323 | if (op > OP_MATCH_MAX) { | |
9f6445e3 | 1324 | log_error("invalid TEST operation"); |
912541b0 KS |
1325 | goto invalid; |
1326 | } | |
f8294e41 | 1327 | attr = get_key_attribute(rules->udev, key + strlen("TEST")); |
912541b0 KS |
1328 | if (attr != NULL) { |
1329 | mode = strtol(attr, NULL, 8); | |
1330 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1331 | } else { | |
1332 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1333 | } | |
1334 | continue; | |
1335 | } | |
1336 | ||
33502ffe | 1337 | if (startswith(key, "RUN")) { |
f8294e41 | 1338 | attr = get_key_attribute(rules->udev, key + strlen("RUN")); |
83cd6b75 KS |
1339 | if (attr == NULL) |
1340 | attr = "program"; | |
8e3ba377 DH |
1341 | if (op == OP_REMOVE) { |
1342 | log_error("invalid RUN operation"); | |
1343 | goto invalid; | |
1344 | } | |
83cd6b75 | 1345 | |
33502ffe | 1346 | if (streq(attr, "builtin")) { |
83cd6b75 KS |
1347 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1348 | ||
1349 | if (cmd < UDEV_BUILTIN_MAX) | |
1350 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1351 | else | |
ec3281d3 | 1352 | log_error("RUN{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1353 | } else if (streq(attr, "program")) { |
83cd6b75 KS |
1354 | enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
1355 | ||
83cd6b75 KS |
1356 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1357 | } else { | |
9f6445e3 | 1358 | log_error("RUN{} unknown type, ignoring RUN %s:%u", filename, lineno); |
83cd6b75 KS |
1359 | } |
1360 | ||
912541b0 KS |
1361 | continue; |
1362 | } | |
1363 | ||
33502ffe | 1364 | if (streq(key, "LABEL")) { |
8e3ba377 DH |
1365 | if (op == OP_REMOVE) { |
1366 | log_error("invalid LABEL operation"); | |
1367 | goto invalid; | |
1368 | } | |
915bf0f6 | 1369 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 KS |
1370 | continue; |
1371 | } | |
1372 | ||
33502ffe | 1373 | if (streq(key, "GOTO")) { |
8e3ba377 DH |
1374 | if (op == OP_REMOVE) { |
1375 | log_error("invalid GOTO operation"); | |
1376 | goto invalid; | |
1377 | } | |
912541b0 KS |
1378 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
1379 | continue; | |
1380 | } | |
1381 | ||
33502ffe | 1382 | if (startswith(key, "NAME")) { |
8e3ba377 DH |
1383 | if (op == OP_REMOVE) { |
1384 | log_error("invalid NAME operation"); | |
1385 | goto invalid; | |
1386 | } | |
912541b0 KS |
1387 | if (op < OP_MATCH_MAX) { |
1388 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1389 | } else { | |
33502ffe | 1390 | if (streq(value, "%k")) { |
baa30fbc | 1391 | log_error("NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " |
912541b0 KS |
1392 | "please remove it from %s:%u\n", filename, lineno); |
1393 | continue; | |
1394 | } | |
1395 | if (value[0] == '\0') { | |
baa30fbc KS |
1396 | log_debug("NAME=\"\" is ignored, because udev will not delete any device nodes, " |
1397 | "please remove it from %s:%u\n", filename, lineno); | |
912541b0 KS |
1398 | continue; |
1399 | } | |
1400 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1401 | } | |
1402 | rule_tmp.rule.rule.can_set_name = true; | |
1403 | continue; | |
1404 | } | |
1405 | ||
8a173387 | 1406 | if (streq(key, "SYMLINK")) { |
8e3ba377 DH |
1407 | if (op == OP_REMOVE) { |
1408 | log_error("invalid SYMLINK operation"); | |
1409 | goto invalid; | |
1410 | } | |
8a173387 | 1411 | if (op < OP_MATCH_MAX) |
912541b0 | 1412 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1413 | else |
1414 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 KS |
1415 | rule_tmp.rule.rule.can_set_name = true; |
1416 | continue; | |
1417 | } | |
1418 | ||
33502ffe | 1419 | if (streq(key, "OWNER")) { |
912541b0 KS |
1420 | uid_t uid; |
1421 | char *endptr; | |
1422 | ||
8e3ba377 DH |
1423 | if (op == OP_REMOVE) { |
1424 | log_error("invalid OWNER operation"); | |
1425 | goto invalid; | |
1426 | } | |
1427 | ||
912541b0 KS |
1428 | uid = strtoul(value, &endptr, 10); |
1429 | if (endptr[0] == '\0') { | |
1430 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1431 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1432 | uid = add_uid(rules, value); | |
1433 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1f6b4113 | 1434 | } else if (rules->resolve_names >= 0) |
912541b0 | 1435 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1436 | |
912541b0 KS |
1437 | rule_tmp.rule.rule.can_set_name = true; |
1438 | continue; | |
1439 | } | |
1440 | ||
33502ffe | 1441 | if (streq(key, "GROUP")) { |
912541b0 KS |
1442 | gid_t gid; |
1443 | char *endptr; | |
1444 | ||
8e3ba377 DH |
1445 | if (op == OP_REMOVE) { |
1446 | log_error("invalid GROUP operation"); | |
1447 | goto invalid; | |
1448 | } | |
1449 | ||
912541b0 KS |
1450 | gid = strtoul(value, &endptr, 10); |
1451 | if (endptr[0] == '\0') { | |
1452 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1453 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1454 | gid = add_gid(rules, value); | |
1455 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1f6b4113 | 1456 | } else if (rules->resolve_names >= 0) |
912541b0 | 1457 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1458 | |
912541b0 KS |
1459 | rule_tmp.rule.rule.can_set_name = true; |
1460 | continue; | |
1461 | } | |
1462 | ||
33502ffe | 1463 | if (streq(key, "MODE")) { |
912541b0 KS |
1464 | mode_t mode; |
1465 | char *endptr; | |
1466 | ||
8e3ba377 DH |
1467 | if (op == OP_REMOVE) { |
1468 | log_error("invalid MODE operation"); | |
1469 | goto invalid; | |
1470 | } | |
1471 | ||
912541b0 KS |
1472 | mode = strtol(value, &endptr, 8); |
1473 | if (endptr[0] == '\0') | |
1474 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1475 | else | |
1476 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1477 | rule_tmp.rule.rule.can_set_name = true; | |
1478 | continue; | |
1479 | } | |
1480 | ||
33502ffe | 1481 | if (streq(key, "OPTIONS")) { |
912541b0 KS |
1482 | const char *pos; |
1483 | ||
8e3ba377 DH |
1484 | if (op == OP_REMOVE) { |
1485 | log_error("invalid OPTIONS operation"); | |
1486 | goto invalid; | |
1487 | } | |
1488 | ||
912541b0 KS |
1489 | pos = strstr(value, "link_priority="); |
1490 | if (pos != NULL) { | |
1491 | int prio = atoi(&pos[strlen("link_priority=")]); | |
1492 | ||
1493 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1494 | } |
1495 | ||
9f20a8a3 | 1496 | pos = strstr(value, "string_escape="); |
912541b0 KS |
1497 | if (pos != NULL) { |
1498 | pos = &pos[strlen("string_escape=")]; | |
33502ffe | 1499 | if (startswith(pos, "none")) |
912541b0 | 1500 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1501 | else if (startswith(pos, "replace")) |
912541b0 KS |
1502 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1503 | } | |
1504 | ||
1505 | pos = strstr(value, "db_persist"); | |
1506 | if (pos != NULL) | |
1507 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1508 | ||
1509 | pos = strstr(value, "nowatch"); | |
1510 | if (pos != NULL) { | |
1511 | const int off = 0; | |
1512 | ||
1513 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1514 | } else { |
1515 | pos = strstr(value, "watch"); | |
1516 | if (pos != NULL) { | |
1517 | const int on = 1; | |
1518 | ||
1519 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1520 | } |
1521 | } | |
1522 | ||
1523 | pos = strstr(value, "static_node="); | |
1524 | if (pos != NULL) { | |
1525 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); | |
1526 | rule_tmp.rule.rule.has_static_node = true; | |
1527 | } | |
1528 | ||
1529 | continue; | |
1530 | } | |
1531 | ||
9f6445e3 | 1532 | log_error("unknown key '%s' in %s:%u", key, filename, lineno); |
912541b0 KS |
1533 | goto invalid; |
1534 | } | |
1535 | ||
1536 | /* add rule token */ | |
1537 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; | |
1538 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1539 | goto invalid; | |
1540 | ||
1541 | /* add tokens to list, sorted by type */ | |
1542 | if (sort_token(rules, &rule_tmp) != 0) | |
1543 | goto invalid; | |
1544 | ||
1545 | return 0; | |
c7521974 | 1546 | invalid: |
9f6445e3 | 1547 | log_error("invalid rule '%s:%u'", filename, lineno); |
912541b0 | 1548 | return -1; |
c7521974 KS |
1549 | } |
1550 | ||
9ec6e95b | 1551 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1552 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1553 | unsigned int first_token; |
775f8b3c | 1554 | unsigned int filename_off; |
912541b0 KS |
1555 | char line[UTIL_LINE_SIZE]; |
1556 | int line_nr = 0; | |
1557 | unsigned int i; | |
1558 | ||
ed88bcfb ZJS |
1559 | f = fopen(filename, "re"); |
1560 | if (!f) { | |
1561 | if (errno == ENOENT) | |
1562 | return 0; | |
1563 | else | |
1564 | return -errno; | |
775f8b3c | 1565 | } |
912541b0 | 1566 | |
ed88bcfb ZJS |
1567 | if (null_or_empty_fd(fileno(f))) { |
1568 | log_debug("Skipping empty file: %s", filename); | |
1569 | return 0; | |
1570 | } else | |
1571 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1572 | |
1573 | first_token = rules->token_cur; | |
915bf0f6 | 1574 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1575 | |
1576 | while (fgets(line, sizeof(line), f) != NULL) { | |
1577 | char *key; | |
1578 | size_t len; | |
1579 | ||
1580 | /* skip whitespace */ | |
1581 | line_nr++; | |
1582 | key = line; | |
1583 | while (isspace(key[0])) | |
1584 | key++; | |
1585 | ||
1586 | /* comment */ | |
1587 | if (key[0] == '#') | |
1588 | continue; | |
1589 | ||
1590 | len = strlen(line); | |
1591 | if (len < 3) | |
1592 | continue; | |
1593 | ||
1594 | /* continue reading if backslash+newline is found */ | |
1595 | while (line[len-2] == '\\') { | |
1596 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1597 | break; | |
1598 | if (strlen(&line[len-2]) < 2) | |
1599 | break; | |
1600 | line_nr++; | |
1601 | len = strlen(line); | |
1602 | } | |
1603 | ||
1604 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1605 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1606 | continue; |
1607 | } | |
1608 | add_rule(rules, key, filename, filename_off, line_nr); | |
1609 | } | |
912541b0 KS |
1610 | |
1611 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1612 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1613 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1614 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1615 | unsigned int j; |
1616 | ||
1617 | for (j = i+1; j < rules->token_cur; j++) { | |
1618 | if (rules->tokens[j].type != TK_RULE) | |
1619 | continue; | |
1620 | if (rules->tokens[j].rule.label_off == 0) | |
1621 | continue; | |
915bf0f6 | 1622 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1623 | continue; |
1624 | rules->tokens[i].key.rule_goto = j; | |
1625 | break; | |
1626 | } | |
1627 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1628 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1629 | } |
1630 | } | |
1631 | return 0; | |
c7521974 KS |
1632 | } |
1633 | ||
9ec6e95b | 1634 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1635 | struct udev_rules *rules; |
1636 | struct udev_list file_list; | |
912541b0 | 1637 | struct token end_token; |
775f8b3c KS |
1638 | char **files, **f; |
1639 | int r; | |
912541b0 | 1640 | |
955d98c9 | 1641 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1642 | if (rules == NULL) |
1643 | return NULL; | |
1644 | rules->udev = udev; | |
1645 | rules->resolve_names = resolve_names; | |
1646 | udev_list_init(udev, &file_list, true); | |
1647 | ||
1648 | /* init token array and string buffer */ | |
1649 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1650 | if (rules->tokens == NULL) |
1651 | return udev_rules_unref(rules); | |
912541b0 KS |
1652 | rules->token_max = PREALLOC_TOKEN; |
1653 | ||
915bf0f6 KS |
1654 | rules->strbuf = strbuf_new(); |
1655 | if (!rules->strbuf) | |
0820a4f0 VP |
1656 | return udev_rules_unref(rules); |
1657 | ||
3b8c1cb0 KS |
1658 | udev_rules_check_timestamp(rules); |
1659 | ||
2ad8416d | 1660 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1661 | if (r < 0) { |
da927ba9 | 1662 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1663 | return udev_rules_unref(rules); |
912541b0 KS |
1664 | } |
1665 | ||
775f8b3c KS |
1666 | /* |
1667 | * The offset value in the rules strct is limited; add all | |
1668 | * rules file names to the beginning of the string buffer. | |
1669 | */ | |
1670 | STRV_FOREACH(f, files) | |
915bf0f6 | 1671 | rules_add_string(rules, *f); |
912541b0 | 1672 | |
775f8b3c KS |
1673 | STRV_FOREACH(f, files) |
1674 | parse_file(rules, *f); | |
1675 | ||
1676 | strv_free(files); | |
912541b0 | 1677 | |
29804cc1 | 1678 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1679 | end_token.type = TK_END; |
1680 | add_token(rules, &end_token); | |
9f6445e3 | 1681 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1682 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1683 | |
915bf0f6 | 1684 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1685 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1686 | rules->strbuf->in_count, rules->strbuf->in_len, |
1687 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1688 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1689 | |
1690 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1691 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1692 | rules->uids_cur = 0; |
1693 | rules->uids_max = 0; | |
a1e58e8e | 1694 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1695 | rules->gids_cur = 0; |
1696 | rules->gids_max = 0; | |
1697 | ||
1698 | dump_rules(rules); | |
1699 | return rules; | |
c7521974 KS |
1700 | } |
1701 | ||
9ec6e95b | 1702 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1703 | if (rules == NULL) |
1704 | return NULL; | |
1705 | free(rules->tokens); | |
915bf0f6 | 1706 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1707 | free(rules->uids); |
1708 | free(rules->gids); | |
1709 | free(rules); | |
1710 | return NULL; | |
c7521974 | 1711 | } |
6880b25d | 1712 | |
9ec6e95b | 1713 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1714 | if (!rules) |
1715 | return false; | |
1716 | ||
2ad8416d | 1717 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1718 | } |
1719 | ||
9ec6e95b | 1720 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1721 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1722 | char *pos; |
1723 | bool match = false; | |
1724 | ||
1725 | if (val == NULL) | |
1726 | val = ""; | |
1727 | ||
1728 | switch (token->key.glob) { | |
1729 | case GL_PLAIN: | |
33502ffe | 1730 | match = (streq(key_value, val)); |
912541b0 KS |
1731 | break; |
1732 | case GL_GLOB: | |
1733 | match = (fnmatch(key_value, val, 0) == 0); | |
1734 | break; | |
1735 | case GL_SPLIT: | |
1736 | { | |
33502ffe | 1737 | const char *s; |
912541b0 KS |
1738 | size_t len; |
1739 | ||
915bf0f6 | 1740 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1741 | len = strlen(val); |
1742 | for (;;) { | |
1743 | const char *next; | |
1744 | ||
33502ffe | 1745 | next = strchr(s, '|'); |
912541b0 | 1746 | if (next != NULL) { |
33502ffe | 1747 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1748 | |
641906e9 | 1749 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1750 | if (match) |
1751 | break; | |
1752 | } else { | |
33502ffe | 1753 | match = (streq(s, val)); |
912541b0 KS |
1754 | break; |
1755 | } | |
33502ffe | 1756 | s = &next[1]; |
912541b0 KS |
1757 | } |
1758 | break; | |
1759 | } | |
1760 | case GL_SPLIT_GLOB: | |
1761 | { | |
1762 | char value[UTIL_PATH_SIZE]; | |
1763 | ||
d5a89d7d | 1764 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1765 | key_value = value; |
1766 | while (key_value != NULL) { | |
1767 | pos = strchr(key_value, '|'); | |
1768 | if (pos != NULL) { | |
1769 | pos[0] = '\0'; | |
1770 | pos = &pos[1]; | |
1771 | } | |
912541b0 KS |
1772 | match = (fnmatch(key_value, val, 0) == 0); |
1773 | if (match) | |
1774 | break; | |
1775 | key_value = pos; | |
1776 | } | |
1777 | break; | |
1778 | } | |
1779 | case GL_SOMETHING: | |
1780 | match = (val[0] != '\0'); | |
1781 | break; | |
1782 | case GL_UNSET: | |
1783 | return -1; | |
1784 | } | |
1785 | ||
baa30fbc | 1786 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1787 | return 0; |
baa30fbc | 1788 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1789 | return 0; |
912541b0 | 1790 | return -1; |
6880b25d KS |
1791 | } |
1792 | ||
9ec6e95b | 1793 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1794 | const char *name; |
1795 | char nbuf[UTIL_NAME_SIZE]; | |
1796 | const char *value; | |
1797 | char vbuf[UTIL_NAME_SIZE]; | |
1798 | size_t len; | |
1799 | ||
915bf0f6 | 1800 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1801 | switch (cur->key.attrsubst) { |
1802 | case SB_FORMAT: | |
1803 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1804 | name = nbuf; | |
1805 | /* fall through */ | |
1806 | case SB_NONE: | |
1807 | value = udev_device_get_sysattr_value(dev, name); | |
1808 | if (value == NULL) | |
1809 | return -1; | |
1810 | break; | |
1811 | case SB_SUBSYS: | |
1812 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1813 | return -1; | |
1814 | value = vbuf; | |
1815 | break; | |
1816 | default: | |
1817 | return -1; | |
1818 | } | |
1819 | ||
1820 | /* remove trailing whitespace, if not asked to match for it */ | |
1821 | len = strlen(value); | |
1822 | if (len > 0 && isspace(value[len-1])) { | |
1823 | const char *key_value; | |
1824 | size_t klen; | |
1825 | ||
915bf0f6 | 1826 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1827 | klen = strlen(key_value); |
1828 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1829 | if (value != vbuf) { | |
d5a89d7d | 1830 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1831 | value = vbuf; |
1832 | } | |
1833 | while (len > 0 && isspace(vbuf[--len])) | |
1834 | vbuf[len] = '\0'; | |
912541b0 KS |
1835 | } |
1836 | } | |
1837 | ||
1838 | return match_key(rules, cur, value); | |
6880b25d KS |
1839 | } |
1840 | ||
1841 | enum escape_type { | |
912541b0 KS |
1842 | ESCAPE_UNSET, |
1843 | ESCAPE_NONE, | |
1844 | ESCAPE_REPLACE, | |
6880b25d KS |
1845 | }; |
1846 | ||
dd5eddd2 KS |
1847 | int udev_rules_apply_to_event(struct udev_rules *rules, |
1848 | struct udev_event *event, | |
1849 | usec_t timeout_usec, | |
67117413 | 1850 | usec_t timeout_warn_usec, |
8314de1d | 1851 | struct udev_list *properties_list) { |
912541b0 KS |
1852 | struct token *cur; |
1853 | struct token *rule; | |
1854 | enum escape_type esc = ESCAPE_UNSET; | |
1855 | bool can_set_name; | |
1856 | ||
1857 | if (rules->tokens == NULL) | |
1858 | return -1; | |
1859 | ||
33502ffe | 1860 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1861 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1862 | udev_device_get_ifindex(event->dev) > 0)); | |
1863 | ||
1864 | /* loop through token list, match, run actions or forward to next rule */ | |
1865 | cur = &rules->tokens[0]; | |
1866 | rule = cur; | |
1867 | for (;;) { | |
1868 | dump_token(rules, cur); | |
1869 | switch (cur->type) { | |
1870 | case TK_RULE: | |
1871 | /* current rule */ | |
1872 | rule = cur; | |
1873 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1874 | if (!can_set_name && rule->rule.can_set_name) | |
1875 | goto nomatch; | |
1876 | esc = ESCAPE_UNSET; | |
1877 | break; | |
1878 | case TK_M_ACTION: | |
1879 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1880 | goto nomatch; | |
1881 | break; | |
1882 | case TK_M_DEVPATH: | |
1883 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1884 | goto nomatch; | |
1885 | break; | |
1886 | case TK_M_KERNEL: | |
1887 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1888 | goto nomatch; | |
1889 | break; | |
1890 | case TK_M_DEVLINK: { | |
912541b0 KS |
1891 | struct udev_list_entry *list_entry; |
1892 | bool match = false; | |
1893 | ||
1894 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1895 | const char *devlink; | |
1896 | ||
920b52e4 | 1897 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1898 | if (match_key(rules, cur, devlink) == 0) { |
1899 | match = true; | |
1900 | break; | |
1901 | } | |
1902 | } | |
1903 | if (!match) | |
1904 | goto nomatch; | |
1905 | break; | |
1906 | } | |
1907 | case TK_M_NAME: | |
1908 | if (match_key(rules, cur, event->name) != 0) | |
1909 | goto nomatch; | |
1910 | break; | |
1911 | case TK_M_ENV: { | |
915bf0f6 | 1912 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1913 | const char *value; |
1914 | ||
1915 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1916 | |
1917 | /* check global properties */ | |
1918 | if (!value && properties_list) { | |
1919 | struct udev_list_entry *list_entry; | |
1920 | ||
1921 | list_entry = udev_list_get_entry(properties_list); | |
1922 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1923 | if (list_entry != NULL) | |
1924 | value = udev_list_entry_get_value(list_entry); | |
1925 | } | |
1926 | ||
1927 | if (!value) | |
912541b0 | 1928 | value = ""; |
912541b0 KS |
1929 | if (match_key(rules, cur, value)) |
1930 | goto nomatch; | |
1931 | break; | |
1932 | } | |
1933 | case TK_M_TAG: { | |
1934 | struct udev_list_entry *list_entry; | |
1935 | bool match = false; | |
1936 | ||
1937 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1938 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1939 | match = true; |
1940 | break; | |
1941 | } | |
1942 | } | |
4302857b FF |
1943 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1944 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1945 | goto nomatch; |
1946 | break; | |
1947 | } | |
1948 | case TK_M_SUBSYSTEM: | |
1949 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1950 | goto nomatch; | |
1951 | break; | |
1952 | case TK_M_DRIVER: | |
1953 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1954 | goto nomatch; | |
1955 | break; | |
912541b0 KS |
1956 | case TK_M_ATTR: |
1957 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1958 | goto nomatch; | |
1959 | break; | |
f4cf2e5b KS |
1960 | case TK_M_SYSCTL: { |
1961 | char filename[UTIL_PATH_SIZE]; | |
1962 | _cleanup_free_ char *value = NULL; | |
1963 | size_t len; | |
1964 | ||
1965 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
1966 | sysctl_normalize(filename); | |
1967 | if (sysctl_read(filename, &value) < 0) | |
1968 | goto nomatch; | |
1969 | ||
1970 | len = strlen(value); | |
1971 | while (len > 0 && isspace(value[--len])) | |
1972 | value[len] = '\0'; | |
1973 | if (match_key(rules, cur, value) != 0) | |
1974 | goto nomatch; | |
1975 | break; | |
1976 | } | |
912541b0 KS |
1977 | case TK_M_KERNELS: |
1978 | case TK_M_SUBSYSTEMS: | |
1979 | case TK_M_DRIVERS: | |
1980 | case TK_M_ATTRS: | |
1981 | case TK_M_TAGS: { | |
1982 | struct token *next; | |
1983 | ||
1984 | /* get whole sequence of parent matches */ | |
1985 | next = cur; | |
1986 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1987 | next++; | |
1988 | ||
1989 | /* loop over parents */ | |
1990 | event->dev_parent = event->dev; | |
1991 | for (;;) { | |
1992 | struct token *key; | |
1993 | ||
912541b0 KS |
1994 | /* loop over sequence of parent match keys */ |
1995 | for (key = cur; key < next; key++ ) { | |
1996 | dump_token(rules, key); | |
1997 | switch(key->type) { | |
1998 | case TK_M_KERNELS: | |
1999 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
2000 | goto try_parent; | |
2001 | break; | |
2002 | case TK_M_SUBSYSTEMS: | |
2003 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
2004 | goto try_parent; | |
2005 | break; | |
2006 | case TK_M_DRIVERS: | |
2007 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
2008 | goto try_parent; | |
2009 | break; | |
2010 | case TK_M_ATTRS: | |
2011 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
2012 | goto try_parent; | |
2013 | break; | |
2014 | case TK_M_TAGS: { | |
915bf0f6 | 2015 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
2016 | |
2017 | if (match && key->key.op == OP_NOMATCH) | |
2018 | goto try_parent; | |
2019 | if (!match && key->key.op == OP_MATCH) | |
2020 | goto try_parent; | |
2021 | break; | |
2022 | } | |
2023 | default: | |
2024 | goto nomatch; | |
2025 | } | |
912541b0 | 2026 | } |
912541b0 KS |
2027 | break; |
2028 | ||
2029 | try_parent: | |
2030 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
2031 | if (event->dev_parent == NULL) | |
2032 | goto nomatch; | |
2033 | } | |
2034 | /* move behind our sequence of parent match keys */ | |
2035 | cur = next; | |
2036 | continue; | |
2037 | } | |
2038 | case TK_M_TEST: { | |
2039 | char filename[UTIL_PATH_SIZE]; | |
2040 | struct stat statbuf; | |
2041 | int match; | |
2042 | ||
915bf0f6 | 2043 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2044 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
2045 | if (filename[0] != '/') { | |
2046 | char tmp[UTIL_PATH_SIZE]; | |
2047 | ||
d5a89d7d KS |
2048 | strscpy(tmp, sizeof(tmp), filename); |
2049 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
2050 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
2051 | } | |
2052 | } | |
2053 | attr_subst_subdir(filename, sizeof(filename)); | |
2054 | ||
2055 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 2056 | if (match && cur->key.mode > 0) |
912541b0 | 2057 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
2058 | if (match && cur->key.op == OP_NOMATCH) |
2059 | goto nomatch; | |
2060 | if (!match && cur->key.op == OP_MATCH) | |
2061 | goto nomatch; | |
2062 | break; | |
2063 | } | |
912541b0 KS |
2064 | case TK_M_PROGRAM: { |
2065 | char program[UTIL_PATH_SIZE]; | |
209b031e | 2066 | char result[UTIL_LINE_SIZE]; |
912541b0 | 2067 | |
a1e58e8e | 2068 | event->program_result = mfree(event->program_result); |
915bf0f6 | 2069 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
9f6445e3 | 2070 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 2071 | program, |
915bf0f6 | 2072 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2073 | rule->rule.filename_line); |
912541b0 | 2074 | |
bbf35206 | 2075 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)) < 0) { |
912541b0 KS |
2076 | if (cur->key.op != OP_NOMATCH) |
2077 | goto nomatch; | |
2078 | } else { | |
2079 | int count; | |
2080 | ||
2081 | util_remove_trailing_chars(result, '\n'); | |
2082 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2083 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
2084 | if (count > 0) | |
9f6445e3 | 2085 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2086 | } |
2087 | event->program_result = strdup(result); | |
912541b0 KS |
2088 | if (cur->key.op == OP_NOMATCH) |
2089 | goto nomatch; | |
2090 | } | |
2091 | break; | |
2092 | } | |
2093 | case TK_M_IMPORT_FILE: { | |
2094 | char import[UTIL_PATH_SIZE]; | |
2095 | ||
915bf0f6 | 2096 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2097 | if (import_file_into_properties(event->dev, import) != 0) |
2098 | if (cur->key.op != OP_NOMATCH) | |
2099 | goto nomatch; | |
2100 | break; | |
2101 | } | |
2102 | case TK_M_IMPORT_PROG: { | |
2103 | char import[UTIL_PATH_SIZE]; | |
2104 | ||
915bf0f6 | 2105 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 2106 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2107 | import, |
915bf0f6 | 2108 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2109 | rule->rule.filename_line); |
912541b0 | 2110 | |
8314de1d | 2111 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import) != 0) |
912541b0 KS |
2112 | if (cur->key.op != OP_NOMATCH) |
2113 | goto nomatch; | |
2114 | break; | |
2115 | } | |
2116 | case TK_M_IMPORT_BUILTIN: { | |
2117 | char command[UTIL_PATH_SIZE]; | |
2118 | ||
2119 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2120 | /* check if we ran already */ | |
2121 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2122 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2123 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2124 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2125 | rule->rule.filename_line); |
912541b0 KS |
2126 | /* return the result from earlier run */ |
2127 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2128 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2129 | goto nomatch; |
2130 | break; | |
2131 | } | |
2132 | /* mark as ran */ | |
2133 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2134 | } | |
2135 | ||
915bf0f6 | 2136 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2137 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2138 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2139 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2140 | rule->rule.filename_line); |
912541b0 KS |
2141 | |
2142 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2143 | /* remember failure */ | |
9f6445e3 | 2144 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2145 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2146 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2147 | if (cur->key.op != OP_NOMATCH) | |
2148 | goto nomatch; | |
2149 | } | |
2150 | break; | |
2151 | } | |
2152 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2153 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2154 | const char *value; |
2155 | ||
2156 | value = udev_device_get_property_value(event->dev_db, key); | |
df546eb5 TG |
2157 | if (value != NULL) |
2158 | udev_device_add_property(event->dev, key, value); | |
2159 | else { | |
912541b0 KS |
2160 | if (cur->key.op != OP_NOMATCH) |
2161 | goto nomatch; | |
2162 | } | |
2163 | break; | |
2164 | } | |
2165 | case TK_M_IMPORT_CMDLINE: { | |
2166 | FILE *f; | |
2167 | bool imported = false; | |
2168 | ||
47ef94ac | 2169 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2170 | if (f != NULL) { |
2171 | char cmdline[4096]; | |
2172 | ||
2173 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2174 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2175 | char *pos; |
2176 | ||
2177 | pos = strstr(cmdline, key); | |
2178 | if (pos != NULL) { | |
912541b0 KS |
2179 | pos += strlen(key); |
2180 | if (pos[0] == '\0' || isspace(pos[0])) { | |
2181 | /* we import simple flags as 'FLAG=1' */ | |
df546eb5 | 2182 | udev_device_add_property(event->dev, key, "1"); |
912541b0 KS |
2183 | imported = true; |
2184 | } else if (pos[0] == '=') { | |
2185 | const char *value; | |
2186 | ||
2187 | pos++; | |
2188 | value = pos; | |
2189 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2190 | pos++; | |
2191 | pos[0] = '\0'; | |
df546eb5 | 2192 | udev_device_add_property(event->dev, key, value); |
912541b0 KS |
2193 | imported = true; |
2194 | } | |
2195 | } | |
2196 | } | |
2197 | fclose(f); | |
2198 | } | |
2199 | if (!imported && cur->key.op != OP_NOMATCH) | |
2200 | goto nomatch; | |
2201 | break; | |
2202 | } | |
2203 | case TK_M_IMPORT_PARENT: { | |
2204 | char import[UTIL_PATH_SIZE]; | |
2205 | ||
915bf0f6 | 2206 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2207 | if (import_parent_into_properties(event->dev, import) != 0) |
2208 | if (cur->key.op != OP_NOMATCH) | |
2209 | goto nomatch; | |
2210 | break; | |
2211 | } | |
2212 | case TK_M_RESULT: | |
2213 | if (match_key(rules, cur, event->program_result) != 0) | |
2214 | goto nomatch; | |
2215 | break; | |
2216 | case TK_A_STRING_ESCAPE_NONE: | |
2217 | esc = ESCAPE_NONE; | |
2218 | break; | |
2219 | case TK_A_STRING_ESCAPE_REPLACE: | |
2220 | esc = ESCAPE_REPLACE; | |
2221 | break; | |
2222 | case TK_A_DB_PERSIST: | |
2223 | udev_device_set_db_persist(event->dev); | |
2224 | break; | |
2225 | case TK_A_INOTIFY_WATCH: | |
2226 | if (event->inotify_watch_final) | |
2227 | break; | |
2228 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2229 | event->inotify_watch_final = true; | |
2230 | event->inotify_watch = cur->key.watch; | |
2231 | break; | |
2232 | case TK_A_DEVLINK_PRIO: | |
2233 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2234 | break; | |
2235 | case TK_A_OWNER: { | |
2236 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2237 | const char *ow = owner; |
2238 | int r; | |
912541b0 KS |
2239 | |
2240 | if (event->owner_final) | |
2241 | break; | |
2242 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2243 | event->owner_final = true; | |
915bf0f6 | 2244 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2245 | event->owner_set = true; |
23bf8dd7 TG |
2246 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2247 | if (r < 0) { | |
2248 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2249 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 2250 | else |
279d3c9c | 2251 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 TG |
2252 | |
2253 | event->uid = 0; | |
2254 | } | |
9f6445e3 | 2255 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2256 | event->uid, |
915bf0f6 | 2257 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2258 | rule->rule.filename_line); |
912541b0 KS |
2259 | break; |
2260 | } | |
2261 | case TK_A_GROUP: { | |
2262 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2263 | const char *gr = group; |
2264 | int r; | |
912541b0 KS |
2265 | |
2266 | if (event->group_final) | |
2267 | break; | |
2268 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2269 | event->group_final = true; | |
915bf0f6 | 2270 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2271 | event->group_set = true; |
23bf8dd7 TG |
2272 | r = get_group_creds(&gr, &event->gid); |
2273 | if (r < 0) { | |
2274 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2275 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 2276 | else |
279d3c9c | 2277 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 TG |
2278 | |
2279 | event->gid = 0; | |
2280 | } | |
9f6445e3 | 2281 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2282 | event->gid, |
915bf0f6 | 2283 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2284 | rule->rule.filename_line); |
912541b0 KS |
2285 | break; |
2286 | } | |
2287 | case TK_A_MODE: { | |
2288 | char mode_str[UTIL_NAME_SIZE]; | |
2289 | mode_t mode; | |
2290 | char *endptr; | |
2291 | ||
2292 | if (event->mode_final) | |
2293 | break; | |
915bf0f6 | 2294 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2295 | mode = strtol(mode_str, &endptr, 8); |
2296 | if (endptr[0] != '\0') { | |
9f6445e3 | 2297 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2298 | break; |
2299 | } | |
2300 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2301 | event->mode_final = true; | |
2302 | event->mode_set = true; | |
2303 | event->mode = mode; | |
9f6445e3 | 2304 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2305 | event->mode, |
915bf0f6 | 2306 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2307 | rule->rule.filename_line); |
912541b0 KS |
2308 | break; |
2309 | } | |
2310 | case TK_A_OWNER_ID: | |
2311 | if (event->owner_final) | |
2312 | break; | |
2313 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2314 | event->owner_final = true; | |
1edefa4f | 2315 | event->owner_set = true; |
912541b0 | 2316 | event->uid = cur->key.uid; |
9f6445e3 | 2317 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2318 | event->uid, |
915bf0f6 | 2319 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2320 | rule->rule.filename_line); |
912541b0 KS |
2321 | break; |
2322 | case TK_A_GROUP_ID: | |
2323 | if (event->group_final) | |
2324 | break; | |
2325 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2326 | event->group_final = true; | |
1edefa4f | 2327 | event->group_set = true; |
912541b0 | 2328 | event->gid = cur->key.gid; |
9f6445e3 | 2329 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2330 | event->gid, |
915bf0f6 | 2331 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2332 | rule->rule.filename_line); |
912541b0 KS |
2333 | break; |
2334 | case TK_A_MODE_ID: | |
2335 | if (event->mode_final) | |
2336 | break; | |
2337 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2338 | event->mode_final = true; | |
2339 | event->mode_set = true; | |
2340 | event->mode = cur->key.mode; | |
9f6445e3 | 2341 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2342 | event->mode, |
915bf0f6 | 2343 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2344 | rule->rule.filename_line); |
912541b0 | 2345 | break; |
c26547d6 KS |
2346 | case TK_A_SECLABEL: { |
2347 | const char *name, *label; | |
2348 | ||
2349 | name = rules_str(rules, cur->key.attr_off); | |
2350 | label = rules_str(rules, cur->key.value_off); | |
2351 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2352 | udev_list_cleanup(&event->seclabel_list); | |
2353 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2354 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2355 | name, label, |
2356 | rules_str(rules, rule->rule.filename_off), | |
2357 | rule->rule.filename_line); | |
2358 | break; | |
2359 | } | |
912541b0 | 2360 | case TK_A_ENV: { |
915bf0f6 KS |
2361 | const char *name = rules_str(rules, cur->key.attr_off); |
2362 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2363 | char value_new[UTIL_NAME_SIZE]; |
2364 | const char *value_old = NULL; | |
912541b0 | 2365 | |
07845c14 KS |
2366 | if (value[0] == '\0') { |
2367 | if (cur->key.op == OP_ADD) | |
2368 | break; | |
912541b0 | 2369 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2370 | break; |
912541b0 | 2371 | } |
07845c14 KS |
2372 | |
2373 | if (cur->key.op == OP_ADD) | |
2374 | value_old = udev_device_get_property_value(event->dev, name); | |
2375 | if (value_old) { | |
2376 | char temp[UTIL_NAME_SIZE]; | |
2377 | ||
2378 | /* append value separated by space */ | |
2379 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2380 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2381 | } else |
2382 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2383 | ||
df546eb5 | 2384 | udev_device_add_property(event->dev, name, value_new); |
912541b0 KS |
2385 | break; |
2386 | } | |
2387 | case TK_A_TAG: { | |
2388 | char tag[UTIL_PATH_SIZE]; | |
2389 | const char *p; | |
2390 | ||
915bf0f6 | 2391 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2392 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2393 | udev_device_cleanup_tags_list(event->dev); | |
2394 | for (p = tag; *p != '\0'; p++) { | |
2395 | if ((*p >= 'a' && *p <= 'z') || | |
2396 | (*p >= 'A' && *p <= 'Z') || | |
2397 | (*p >= '0' && *p <= '9') || | |
2398 | *p == '-' || *p == '_') | |
2399 | continue; | |
9f6445e3 | 2400 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2401 | break; |
2402 | } | |
8e3ba377 DH |
2403 | if (cur->key.op == OP_REMOVE) |
2404 | udev_device_remove_tag(event->dev, tag); | |
2405 | else | |
2406 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2407 | break; |
2408 | } | |
2409 | case TK_A_NAME: { | |
915bf0f6 | 2410 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2411 | |
912541b0 KS |
2412 | char name_str[UTIL_PATH_SIZE]; |
2413 | int count; | |
2414 | ||
2415 | if (event->name_final) | |
2416 | break; | |
2417 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2418 | event->name_final = true; | |
2419 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2420 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2421 | count = util_replace_chars(name_str, "/"); | |
2422 | if (count > 0) | |
9f6445e3 | 2423 | log_debug("%i character(s) replaced", count); |
912541b0 | 2424 | } |
6ada823a | 2425 | if (major(udev_device_get_devnum(event->dev)) && |
4cb72937 | 2426 | (!streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/")))) { |
6ada823a KS |
2427 | log_error("NAME=\"%s\" ignored, kernel device nodes " |
2428 | "can not be renamed; please fix it in %s:%u\n", name, | |
915bf0f6 | 2429 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
6ada823a | 2430 | break; |
0ecfcbd4 | 2431 | } |
2fc09a9c | 2432 | free_and_strdup(&event->name, name_str); |
9f6445e3 | 2433 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2434 | event->name, |
915bf0f6 | 2435 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2436 | rule->rule.filename_line); |
912541b0 KS |
2437 | break; |
2438 | } | |
2439 | case TK_A_DEVLINK: { | |
2440 | char temp[UTIL_PATH_SIZE]; | |
2441 | char filename[UTIL_PATH_SIZE]; | |
2442 | char *pos, *next; | |
2443 | int count = 0; | |
2444 | ||
2445 | if (event->devlink_final) | |
2446 | break; | |
2447 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2448 | break; | |
2449 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2450 | event->devlink_final = true; | |
2451 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2452 | udev_device_cleanup_devlinks_list(event->dev); | |
2453 | ||
2454 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2455 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2456 | if (esc == ESCAPE_UNSET) |
2457 | count = util_replace_chars(temp, "/ "); | |
2458 | else if (esc == ESCAPE_REPLACE) | |
2459 | count = util_replace_chars(temp, "/"); | |
2460 | if (count > 0) | |
9f6445e3 | 2461 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2462 | pos = temp; |
2463 | while (isspace(pos[0])) | |
2464 | pos++; | |
2465 | next = strchr(pos, ' '); | |
2466 | while (next != NULL) { | |
2467 | next[0] = '\0'; | |
9f6445e3 | 2468 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2469 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2470 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2471 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2472 | while (isspace(next[1])) |
2473 | next++; | |
2474 | pos = &next[1]; | |
2475 | next = strchr(pos, ' '); | |
2476 | } | |
2477 | if (pos[0] != '\0') { | |
9f6445e3 | 2478 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2479 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2480 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2481 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2482 | } |
2483 | break; | |
2484 | } | |
2485 | case TK_A_ATTR: { | |
915bf0f6 | 2486 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2487 | char attr[UTIL_PATH_SIZE]; |
2488 | char value[UTIL_NAME_SIZE]; | |
2489 | FILE *f; | |
2490 | ||
2491 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2492 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2493 | attr_subst_subdir(attr, sizeof(attr)); |
2494 | ||
915bf0f6 | 2495 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2496 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2497 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2498 | rule->rule.filename_line); |
47ef94ac | 2499 | f = fopen(attr, "we"); |
912541b0 KS |
2500 | if (f != NULL) { |
2501 | if (fprintf(f, "%s", value) <= 0) | |
56f64d95 | 2502 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); |
912541b0 KS |
2503 | fclose(f); |
2504 | } else { | |
56f64d95 | 2505 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
912541b0 KS |
2506 | } |
2507 | break; | |
2508 | } | |
f4cf2e5b KS |
2509 | case TK_A_SYSCTL: { |
2510 | char filename[UTIL_PATH_SIZE]; | |
2511 | char value[UTIL_NAME_SIZE]; | |
2512 | int r; | |
2513 | ||
2514 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
2515 | sysctl_normalize(filename); | |
2516 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); | |
2517 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, | |
2518 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2519 | r = sysctl_write(filename, value); | |
2520 | if (r < 0) | |
46b57b6e | 2521 | log_error_errno(r, "error writing SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2522 | break; |
2523 | } | |
83cd6b75 KS |
2524 | case TK_A_RUN_BUILTIN: |
2525 | case TK_A_RUN_PROGRAM: { | |
2526 | struct udev_list_entry *entry; | |
2527 | ||
912541b0 KS |
2528 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2529 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2530 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2531 | rules_str(rules, cur->key.value_off), |
2532 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2533 | rule->rule.filename_line); |
915bf0f6 | 2534 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2535 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2536 | break; |
2537 | } | |
2538 | case TK_A_GOTO: | |
2539 | if (cur->key.rule_goto == 0) | |
2540 | break; | |
2541 | cur = &rules->tokens[cur->key.rule_goto]; | |
2542 | continue; | |
2543 | case TK_END: | |
2544 | return 0; | |
2545 | ||
2546 | case TK_M_PARENTS_MIN: | |
2547 | case TK_M_PARENTS_MAX: | |
2548 | case TK_M_MAX: | |
2549 | case TK_UNSET: | |
9f6445e3 | 2550 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2551 | goto nomatch; |
2552 | } | |
2553 | ||
2554 | cur++; | |
2555 | continue; | |
2556 | nomatch: | |
2557 | /* fast-forward to next rule */ | |
2558 | cur = rule + rule->rule.token_count; | |
912541b0 | 2559 | } |
6880b25d | 2560 | } |
761dfddc | 2561 | |
9ec6e95b | 2562 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2563 | struct token *cur; |
2564 | struct token *rule; | |
2565 | uid_t uid = 0; | |
2566 | gid_t gid = 0; | |
2567 | mode_t mode = 0; | |
84b6ad70 TG |
2568 | _cleanup_strv_free_ char **tags = NULL; |
2569 | char **t; | |
2570 | FILE *f = NULL; | |
2571 | _cleanup_free_ char *path = NULL; | |
2572 | int r = 0; | |
912541b0 KS |
2573 | |
2574 | if (rules->tokens == NULL) | |
84b6ad70 | 2575 | return 0; |
912541b0 KS |
2576 | |
2577 | cur = &rules->tokens[0]; | |
2578 | rule = cur; | |
2579 | for (;;) { | |
2580 | switch (cur->type) { | |
2581 | case TK_RULE: | |
2582 | /* current rule */ | |
2583 | rule = cur; | |
2584 | ||
2585 | /* skip rules without a static_node tag */ | |
2586 | if (!rule->rule.has_static_node) | |
2587 | goto next; | |
2588 | ||
2589 | uid = 0; | |
2590 | gid = 0; | |
2591 | mode = 0; | |
97b11eed | 2592 | tags = strv_free(tags); |
912541b0 KS |
2593 | break; |
2594 | case TK_A_OWNER_ID: | |
2595 | uid = cur->key.uid; | |
2596 | break; | |
2597 | case TK_A_GROUP_ID: | |
2598 | gid = cur->key.gid; | |
2599 | break; | |
2600 | case TK_A_MODE_ID: | |
2601 | mode = cur->key.mode; | |
84b6ad70 TG |
2602 | break; |
2603 | case TK_A_TAG: | |
2604 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2605 | if (r < 0) | |
2606 | goto finish; | |
2607 | ||
912541b0 KS |
2608 | break; |
2609 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2610 | char device_node[UTIL_PATH_SIZE]; |
2611 | char tags_dir[UTIL_PATH_SIZE]; | |
2612 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2613 | struct stat stats; |
2614 | ||
2615 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2616 | |
84b6ad70 | 2617 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2618 | goto next; |
d6f116a7 | 2619 | |
84b6ad70 | 2620 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2621 | if (stat(device_node, &stats) != 0) |
2622 | break; | |
2623 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2624 | break; | |
84b6ad70 | 2625 | |
d6f116a7 | 2626 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2627 | if (tags) { |
84b6ad70 TG |
2628 | STRV_FOREACH(t, tags) { |
2629 | _cleanup_free_ char *unescaped_filename = NULL; | |
2630 | ||
2631 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2632 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2633 | if (r < 0) |
2634 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2635 | |
2636 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2637 | ||
2638 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2639 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2640 | if (r < 0 && errno != EEXIST) |
2641 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2642 | tag_symlink, device_node); | |
2643 | else | |
84b6ad70 TG |
2644 | r = 0; |
2645 | } | |
2646 | } | |
2647 | ||
15a72200 TG |
2648 | /* don't touch the permissions if only the tags were set */ |
2649 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2650 | break; |
2651 | ||
912541b0 KS |
2652 | if (mode == 0) { |
2653 | if (gid > 0) | |
2654 | mode = 0660; | |
2655 | else | |
2656 | mode = 0600; | |
2657 | } | |
2658 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2659 | r = chmod(device_node, mode); |
2660 | if (r < 0) { | |
9f6445e3 | 2661 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2662 | return -errno; |
2663 | } else | |
9f6445e3 | 2664 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2665 | } |
2666 | ||
2667 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2668 | r = chown(device_node, uid, gid); |
2669 | if (r < 0) { | |
9f6445e3 | 2670 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2671 | return -errno; |
2672 | } else | |
9f6445e3 | 2673 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2674 | } |
2675 | ||
84b6ad70 | 2676 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2677 | break; |
2678 | } | |
2679 | case TK_END: | |
84b6ad70 | 2680 | goto finish; |
912541b0 KS |
2681 | } |
2682 | ||
2683 | cur++; | |
2684 | continue; | |
761dfddc | 2685 | next: |
912541b0 KS |
2686 | /* fast-forward to next rule */ |
2687 | cur = rule + rule->rule.token_count; | |
2688 | continue; | |
2689 | } | |
84b6ad70 TG |
2690 | |
2691 | finish: | |
2692 | if (f) { | |
2693 | fflush(f); | |
2694 | fchmod(fileno(f), 0644); | |
2695 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
2696 | r = -errno; | |
2697 | unlink("/run/udev/static_node-tags"); | |
2698 | unlink(path); | |
2699 | } | |
2700 | fclose(f); | |
2701 | } | |
2702 | ||
2703 | return r; | |
761dfddc | 2704 | } |