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2232cac8 | 1 | /* |
1298001e | 2 | * Copyright (C) 2003-2012 Kay Sievers <kay@vrfy.org> |
2232cac8 | 3 | * |
55e9959b KS |
4 | * This program is free software: you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
3d6d12c6 | 8 | * |
55e9959b KS |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
2232cac8 | 13 | * |
55e9959b KS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
2232cac8 GKH |
16 | */ |
17 | ||
18 | #include <stddef.h> | |
1449a55d | 19 | #include <limits.h> |
2232cac8 | 20 | #include <stdlib.h> |
6d87ee2e | 21 | #include <stdbool.h> |
2232cac8 GKH |
22 | #include <string.h> |
23 | #include <stdio.h> | |
24 | #include <fcntl.h> | |
25 | #include <ctype.h> | |
26 | #include <unistd.h> | |
27 | #include <errno.h> | |
5ee7ecfb | 28 | #include <dirent.h> |
cea61f5c | 29 | #include <fnmatch.h> |
959e8b5d | 30 | #include <time.h> |
2232cac8 | 31 | |
2232cac8 | 32 | #include "udev.h" |
9eb977db | 33 | #include "path-util.h" |
2c21044f | 34 | #include "conf-files.h" |
915bf0f6 | 35 | #include "strbuf.h" |
84b6ad70 | 36 | #include "strv.h" |
1291bc89 | 37 | #include "util.h" |
f4cf2e5b | 38 | #include "sysctl-util.h" |
2232cac8 | 39 | |
a1525d17 | 40 | #define PREALLOC_TOKEN 2048 |
c7521974 | 41 | |
4052400f | 42 | struct uid_gid { |
912541b0 KS |
43 | unsigned int name_off; |
44 | union { | |
a1525d17 KS |
45 | uid_t uid; |
46 | gid_t gid; | |
912541b0 | 47 | }; |
4052400f KS |
48 | }; |
49 | ||
2ad8416d ZJS |
50 | static const char* const rules_dirs[] = { |
51 | "/etc/udev/rules.d", | |
52 | "/run/udev/rules.d", | |
53 | UDEVLIBEXECDIR "/rules.d", | |
54 | NULL}; | |
55 | ||
4052400f | 56 | struct udev_rules { |
912541b0 | 57 | struct udev *udev; |
97f2d76d | 58 | usec_t dirs_ts_usec; |
912541b0 KS |
59 | int resolve_names; |
60 | ||
61 | /* every key in the rules file becomes a token */ | |
62 | struct token *tokens; | |
63 | unsigned int token_cur; | |
64 | unsigned int token_max; | |
65 | ||
ab06eef8 | 66 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 67 | struct strbuf *strbuf; |
912541b0 KS |
68 | |
69 | /* during rule parsing, uid/gid lookup results are cached */ | |
70 | struct uid_gid *uids; | |
71 | unsigned int uids_cur; | |
72 | unsigned int uids_max; | |
73 | struct uid_gid *gids; | |
74 | unsigned int gids_cur; | |
75 | unsigned int gids_max; | |
4052400f KS |
76 | }; |
77 | ||
915bf0f6 KS |
78 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
79 | return rules->strbuf->buf + off; | |
80 | } | |
81 | ||
82 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
83 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
84 | } | |
85 | ||
8e3ba377 | 86 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 87 | enum operation_type { |
912541b0 | 88 | OP_UNSET, |
b0f7409f | 89 | |
912541b0 KS |
90 | OP_MATCH, |
91 | OP_NOMATCH, | |
92 | OP_MATCH_MAX, | |
b0f7409f | 93 | |
912541b0 | 94 | OP_ADD, |
8e3ba377 | 95 | OP_REMOVE, |
912541b0 KS |
96 | OP_ASSIGN, |
97 | OP_ASSIGN_FINAL, | |
c7521974 KS |
98 | }; |
99 | ||
ac218d9c | 100 | enum string_glob_type { |
912541b0 | 101 | GL_UNSET, |
a1525d17 | 102 | GL_PLAIN, /* no special chars */ |
912541b0 | 103 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
104 | GL_SPLIT, /* multi-value A|B */ |
105 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
106 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
107 | }; |
108 | ||
32028733 | 109 | enum string_subst_type { |
912541b0 KS |
110 | SB_UNSET, |
111 | SB_NONE, | |
112 | SB_FORMAT, | |
113 | SB_SUBSYS, | |
32028733 KS |
114 | }; |
115 | ||
154a7b84 | 116 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 117 | enum token_type { |
912541b0 KS |
118 | TK_UNSET, |
119 | TK_RULE, | |
120 | ||
a1525d17 KS |
121 | TK_M_ACTION, /* val */ |
122 | TK_M_DEVPATH, /* val */ | |
123 | TK_M_KERNEL, /* val */ | |
124 | TK_M_DEVLINK, /* val */ | |
125 | TK_M_NAME, /* val */ | |
126 | TK_M_ENV, /* val, attr */ | |
127 | TK_M_TAG, /* val */ | |
128 | TK_M_SUBSYSTEM, /* val */ | |
129 | TK_M_DRIVER, /* val */ | |
130 | TK_M_WAITFOR, /* val */ | |
131 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 132 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
133 | |
134 | TK_M_PARENTS_MIN, | |
a1525d17 | 135 | TK_M_KERNELS, /* val */ |
912541b0 | 136 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
137 | TK_M_DRIVERS, /* val */ |
138 | TK_M_ATTRS, /* val, attr */ | |
139 | TK_M_TAGS, /* val */ | |
912541b0 KS |
140 | TK_M_PARENTS_MAX, |
141 | ||
a1525d17 | 142 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
143 | TK_M_PROGRAM, /* val */ |
144 | TK_M_IMPORT_FILE, /* val */ | |
145 | TK_M_IMPORT_PROG, /* val */ | |
146 | TK_M_IMPORT_BUILTIN, /* val */ | |
147 | TK_M_IMPORT_DB, /* val */ | |
148 | TK_M_IMPORT_CMDLINE, /* val */ | |
149 | TK_M_IMPORT_PARENT, /* val */ | |
150 | TK_M_RESULT, /* val */ | |
912541b0 KS |
151 | TK_M_MAX, |
152 | ||
153 | TK_A_STRING_ESCAPE_NONE, | |
154 | TK_A_STRING_ESCAPE_REPLACE, | |
155 | TK_A_DB_PERSIST, | |
a1525d17 KS |
156 | TK_A_INOTIFY_WATCH, /* int */ |
157 | TK_A_DEVLINK_PRIO, /* int */ | |
158 | TK_A_OWNER, /* val */ | |
159 | TK_A_GROUP, /* val */ | |
160 | TK_A_MODE, /* val */ | |
161 | TK_A_OWNER_ID, /* uid_t */ | |
162 | TK_A_GROUP_ID, /* gid_t */ | |
163 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 164 | TK_A_TAG, /* val */ |
a1525d17 | 165 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 166 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 167 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
168 | TK_A_NAME, /* val */ |
169 | TK_A_DEVLINK, /* val */ | |
170 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 171 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
172 | TK_A_RUN_BUILTIN, /* val, bool */ |
173 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 174 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
175 | |
176 | TK_END, | |
c7521974 KS |
177 | }; |
178 | ||
3f3aa9f5 | 179 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 180 | struct token { |
912541b0 KS |
181 | union { |
182 | unsigned char type; /* same in rule and key */ | |
183 | struct { | |
184 | enum token_type type:8; | |
185 | bool can_set_name:1; | |
186 | bool has_static_node:1; | |
187 | unsigned int unused:6; | |
188 | unsigned short token_count; | |
189 | unsigned int label_off; | |
190 | unsigned short filename_off; | |
191 | unsigned short filename_line; | |
192 | } rule; | |
193 | struct { | |
194 | enum token_type type:8; | |
195 | enum operation_type op:8; | |
196 | enum string_glob_type glob:8; | |
197 | enum string_subst_type subst:4; | |
198 | enum string_subst_type attrsubst:4; | |
199 | unsigned int value_off; | |
200 | union { | |
201 | unsigned int attr_off; | |
912541b0 KS |
202 | unsigned int rule_goto; |
203 | mode_t mode; | |
204 | uid_t uid; | |
205 | gid_t gid; | |
206 | int devlink_prio; | |
912541b0 KS |
207 | int watch; |
208 | enum udev_builtin_cmd builtin_cmd; | |
209 | }; | |
210 | } key; | |
211 | }; | |
4052400f KS |
212 | }; |
213 | ||
912541b0 | 214 | #define MAX_TK 64 |
4052400f | 215 | struct rule_tmp { |
912541b0 KS |
216 | struct udev_rules *rules; |
217 | struct token rule; | |
218 | struct token token[MAX_TK]; | |
219 | unsigned int token_cur; | |
4052400f KS |
220 | }; |
221 | ||
baa30fbc | 222 | #ifdef DEBUG |
9ec6e95b | 223 | static const char *operation_str(enum operation_type type) { |
912541b0 | 224 | static const char *operation_strs[] = { |
a1525d17 KS |
225 | [OP_UNSET] = "UNSET", |
226 | [OP_MATCH] = "match", | |
227 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
228 | [OP_MATCH_MAX] = "MATCH_MAX", |
229 | ||
a1525d17 | 230 | [OP_ADD] = "add", |
8e3ba377 | 231 | [OP_REMOVE] = "remove", |
a1525d17 KS |
232 | [OP_ASSIGN] = "assign", |
233 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
234 | } ; |
235 | ||
236 | return operation_strs[type]; | |
5d6a1fa6 | 237 | } |
4052400f | 238 | |
9ec6e95b | 239 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 240 | static const char *string_glob_strs[] = { |
a1525d17 KS |
241 | [GL_UNSET] = "UNSET", |
242 | [GL_PLAIN] = "plain", | |
243 | [GL_GLOB] = "glob", | |
244 | [GL_SPLIT] = "split", | |
245 | [GL_SPLIT_GLOB] = "split-glob", | |
246 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
247 | }; |
248 | ||
249 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
250 | } |
251 | ||
9ec6e95b | 252 | static const char *token_str(enum token_type type) { |
912541b0 | 253 | static const char *token_strs[] = { |
a1525d17 KS |
254 | [TK_UNSET] = "UNSET", |
255 | [TK_RULE] = "RULE", | |
912541b0 | 256 | |
a1525d17 | 257 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 258 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 259 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 260 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
261 | [TK_M_NAME] = "M NAME", |
262 | [TK_M_ENV] = "M ENV", | |
263 | [TK_M_TAG] = "M TAG", | |
264 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
265 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 266 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 267 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 268 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 269 | |
a1525d17 | 270 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 271 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 272 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 273 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
274 | [TK_M_ATTRS] = "M ATTRS", |
275 | [TK_M_TAGS] = "M TAGS", | |
276 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 277 | |
a1525d17 | 278 | [TK_M_TEST] = "M TEST", |
912541b0 | 279 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
280 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
281 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
282 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
283 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
284 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
285 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
286 | [TK_M_RESULT] = "M RESULT", | |
287 | [TK_M_MAX] = "M MAX", | |
288 | ||
289 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
290 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
291 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
292 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
293 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
294 | [TK_A_OWNER] = "A OWNER", | |
295 | [TK_A_GROUP] = "A GROUP", | |
296 | [TK_A_MODE] = "A MODE", | |
297 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
298 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
299 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 300 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 301 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
302 | [TK_A_ENV] = "A ENV", |
303 | [TK_A_TAG] = "A ENV", | |
304 | [TK_A_NAME] = "A NAME", | |
912541b0 | 305 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 306 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 307 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
308 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
309 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 310 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 311 | |
a1525d17 | 312 | [TK_END] = "END", |
912541b0 KS |
313 | }; |
314 | ||
315 | return token_strs[type]; | |
5d6a1fa6 | 316 | } |
c7521974 | 317 | |
9ec6e95b | 318 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
319 | enum token_type type = token->type; |
320 | enum operation_type op = token->key.op; | |
321 | enum string_glob_type glob = token->key.glob; | |
915bf0f6 | 322 | const char *value = str(rules, token->key.value_off); |
912541b0 KS |
323 | const char *attr = &rules->buf[token->key.attr_off]; |
324 | ||
325 | switch (type) { | |
326 | case TK_RULE: | |
327 | { | |
328 | const char *tks_ptr = (char *)rules->tokens; | |
329 | const char *tk_ptr = (char *)token; | |
330 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
331 | ||
9f6445e3 | 332 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
baa30fbc KS |
333 | &rules->buf[token->rule.filename_off], token->rule.filename_line, |
334 | idx, token->rule.token_count, | |
335 | &rules->buf[token->rule.label_off]); | |
912541b0 KS |
336 | break; |
337 | } | |
338 | case TK_M_ACTION: | |
339 | case TK_M_DEVPATH: | |
340 | case TK_M_KERNEL: | |
341 | case TK_M_SUBSYSTEM: | |
342 | case TK_M_DRIVER: | |
343 | case TK_M_WAITFOR: | |
344 | case TK_M_DEVLINK: | |
345 | case TK_M_NAME: | |
346 | case TK_M_KERNELS: | |
347 | case TK_M_SUBSYSTEMS: | |
348 | case TK_M_DRIVERS: | |
349 | case TK_M_TAGS: | |
350 | case TK_M_PROGRAM: | |
351 | case TK_M_IMPORT_FILE: | |
352 | case TK_M_IMPORT_PROG: | |
353 | case TK_M_IMPORT_DB: | |
354 | case TK_M_IMPORT_CMDLINE: | |
355 | case TK_M_IMPORT_PARENT: | |
356 | case TK_M_RESULT: | |
357 | case TK_A_NAME: | |
358 | case TK_A_DEVLINK: | |
359 | case TK_A_OWNER: | |
360 | case TK_A_GROUP: | |
361 | case TK_A_MODE: | |
83cd6b75 KS |
362 | case TK_A_RUN_BUILTIN: |
363 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 364 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 365 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
366 | break; |
367 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 368 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
369 | break; |
370 | case TK_M_ATTR: | |
f4cf2e5b | 371 | case TK_M_SYSCTL: |
912541b0 KS |
372 | case TK_M_ATTRS: |
373 | case TK_M_ENV: | |
374 | case TK_A_ATTR: | |
f4cf2e5b | 375 | case TK_A_SYSCTL: |
912541b0 | 376 | case TK_A_ENV: |
9f6445e3 | 377 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 378 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
379 | break; |
380 | case TK_M_TAG: | |
381 | case TK_A_TAG: | |
9f6445e3 | 382 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
383 | break; |
384 | case TK_A_STRING_ESCAPE_NONE: | |
385 | case TK_A_STRING_ESCAPE_REPLACE: | |
386 | case TK_A_DB_PERSIST: | |
9f6445e3 | 387 | log_debug("%s", token_str(type)); |
912541b0 KS |
388 | break; |
389 | case TK_M_TEST: | |
9f6445e3 | 390 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 391 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
392 | break; |
393 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 394 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
395 | break; |
396 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 397 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
398 | break; |
399 | case TK_A_OWNER_ID: | |
9f6445e3 | 400 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
401 | break; |
402 | case TK_A_GROUP_ID: | |
9f6445e3 | 403 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
404 | break; |
405 | case TK_A_MODE_ID: | |
9f6445e3 | 406 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
407 | break; |
408 | case TK_A_STATIC_NODE: | |
9f6445e3 | 409 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 410 | break; |
c26547d6 | 411 | case TK_A_SECLABEL: |
9f6445e3 | 412 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 413 | break; |
912541b0 | 414 | case TK_A_GOTO: |
9f6445e3 | 415 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
416 | break; |
417 | case TK_END: | |
9f6445e3 | 418 | log_debug("* %s", token_str(type)); |
912541b0 KS |
419 | break; |
420 | case TK_M_PARENTS_MIN: | |
421 | case TK_M_PARENTS_MAX: | |
422 | case TK_M_MAX: | |
423 | case TK_UNSET: | |
9f6445e3 | 424 | log_debug("unknown type %u", type); |
912541b0 KS |
425 | break; |
426 | } | |
4052400f | 427 | } |
154a7b84 | 428 | |
9ec6e95b | 429 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
430 | unsigned int i; |
431 | ||
9f6445e3 | 432 | log_debug("dumping %u (%zu bytes) tokens, %u (%zu bytes) strings", |
baa30fbc KS |
433 | rules->token_cur, |
434 | rules->token_cur * sizeof(struct token), | |
435 | rules->buf_count, | |
436 | rules->buf_cur); | |
f168c273 | 437 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 438 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
439 | } |
440 | #else | |
4052400f KS |
441 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
442 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 443 | #endif /* DEBUG */ |
c7521974 | 444 | |
9ec6e95b | 445 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
446 | /* grow buffer if needed */ |
447 | if (rules->token_cur+1 >= rules->token_max) { | |
448 | struct token *tokens; | |
449 | unsigned int add; | |
450 | ||
451 | /* double the buffer size */ | |
452 | add = rules->token_max; | |
453 | if (add < 8) | |
454 | add = 8; | |
455 | ||
456 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
457 | if (tokens == NULL) | |
458 | return -1; | |
912541b0 KS |
459 | rules->tokens = tokens; |
460 | rules->token_max += add; | |
461 | } | |
462 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
463 | rules->token_cur++; | |
464 | return 0; | |
c7521974 | 465 | } |
a27cd06c | 466 | |
9ec6e95b | 467 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 468 | unsigned int i; |
23bf8dd7 | 469 | uid_t uid = 0; |
912541b0 | 470 | unsigned int off; |
23bf8dd7 | 471 | int r; |
912541b0 KS |
472 | |
473 | /* lookup, if we know it already */ | |
474 | for (i = 0; i < rules->uids_cur; i++) { | |
475 | off = rules->uids[i].name_off; | |
915bf0f6 | 476 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 477 | uid = rules->uids[i].uid; |
912541b0 KS |
478 | return uid; |
479 | } | |
480 | } | |
23bf8dd7 TG |
481 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
482 | if (r < 0) { | |
483 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 484 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 485 | else |
279d3c9c | 486 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 | 487 | } |
912541b0 KS |
488 | |
489 | /* grow buffer if needed */ | |
490 | if (rules->uids_cur+1 >= rules->uids_max) { | |
491 | struct uid_gid *uids; | |
492 | unsigned int add; | |
493 | ||
494 | /* double the buffer size */ | |
495 | add = rules->uids_max; | |
496 | if (add < 1) | |
497 | add = 8; | |
498 | ||
499 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
500 | if (uids == NULL) | |
501 | return uid; | |
912541b0 KS |
502 | rules->uids = uids; |
503 | rules->uids_max += add; | |
504 | } | |
505 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 506 | off = rules_add_string(rules, owner); |
912541b0 KS |
507 | if (off <= 0) |
508 | return uid; | |
509 | rules->uids[rules->uids_cur].name_off = off; | |
510 | rules->uids_cur++; | |
511 | return uid; | |
154a7b84 KS |
512 | } |
513 | ||
9ec6e95b | 514 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 515 | unsigned int i; |
23bf8dd7 | 516 | gid_t gid = 0; |
912541b0 | 517 | unsigned int off; |
23bf8dd7 | 518 | int r; |
912541b0 KS |
519 | |
520 | /* lookup, if we know it already */ | |
521 | for (i = 0; i < rules->gids_cur; i++) { | |
522 | off = rules->gids[i].name_off; | |
915bf0f6 | 523 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 524 | gid = rules->gids[i].gid; |
912541b0 KS |
525 | return gid; |
526 | } | |
527 | } | |
23bf8dd7 TG |
528 | r = get_group_creds(&group, &gid); |
529 | if (r < 0) { | |
530 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 531 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 532 | else |
279d3c9c | 533 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 | 534 | } |
912541b0 KS |
535 | |
536 | /* grow buffer if needed */ | |
537 | if (rules->gids_cur+1 >= rules->gids_max) { | |
538 | struct uid_gid *gids; | |
539 | unsigned int add; | |
540 | ||
541 | /* double the buffer size */ | |
542 | add = rules->gids_max; | |
543 | if (add < 1) | |
544 | add = 8; | |
545 | ||
546 | gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); | |
547 | if (gids == NULL) | |
548 | return gid; | |
912541b0 KS |
549 | rules->gids = gids; |
550 | rules->gids_max += add; | |
551 | } | |
552 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 553 | off = rules_add_string(rules, group); |
912541b0 KS |
554 | if (off <= 0) |
555 | return gid; | |
556 | rules->gids[rules->gids_cur].name_off = off; | |
557 | rules->gids_cur++; | |
558 | return gid; | |
154a7b84 KS |
559 | } |
560 | ||
9ec6e95b | 561 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
562 | char *key; |
563 | char *val; | |
564 | size_t len; | |
565 | ||
566 | /* find key */ | |
567 | key = line; | |
568 | while (isspace(key[0])) | |
569 | key++; | |
570 | ||
571 | /* comment or empty line */ | |
572 | if (key[0] == '#' || key[0] == '\0') | |
573 | return -1; | |
574 | ||
575 | /* split key/value */ | |
576 | val = strchr(key, '='); | |
577 | if (val == NULL) | |
578 | return -1; | |
579 | val[0] = '\0'; | |
580 | val++; | |
581 | ||
582 | /* find value */ | |
583 | while (isspace(val[0])) | |
584 | val++; | |
585 | ||
586 | /* terminate key */ | |
587 | len = strlen(key); | |
588 | if (len == 0) | |
589 | return -1; | |
590 | while (isspace(key[len-1])) | |
591 | len--; | |
592 | key[len] = '\0'; | |
593 | ||
594 | /* terminate value */ | |
595 | len = strlen(val); | |
596 | if (len == 0) | |
597 | return -1; | |
598 | while (isspace(val[len-1])) | |
599 | len--; | |
600 | val[len] = '\0'; | |
601 | ||
602 | if (len == 0) | |
603 | return -1; | |
604 | ||
605 | /* unquote */ | |
606 | if (val[0] == '"' || val[0] == '\'') { | |
607 | if (val[len-1] != val[0]) { | |
9f6445e3 | 608 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
609 | return -1; |
610 | } | |
611 | val[len-1] = '\0'; | |
612 | val++; | |
613 | } | |
614 | ||
df546eb5 | 615 | udev_device_add_property(dev, key, val); |
0aa5b4d1 | 616 | |
912541b0 | 617 | return 0; |
be4bedd1 KS |
618 | } |
619 | ||
9ec6e95b | 620 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
621 | FILE *f; |
622 | char line[UTIL_LINE_SIZE]; | |
623 | ||
47ef94ac | 624 | f = fopen(filename, "re"); |
912541b0 KS |
625 | if (f == NULL) |
626 | return -1; | |
627 | while (fgets(line, sizeof(line), f) != NULL) | |
628 | import_property_from_string(dev, line); | |
629 | fclose(f); | |
630 | return 0; | |
bd0ed2ff KS |
631 | } |
632 | ||
dd5eddd2 KS |
633 | static int import_program_into_properties(struct udev_event *event, |
634 | usec_t timeout_usec, | |
67117413 | 635 | usec_t timeout_warn_usec, |
8314de1d | 636 | const char *program) { |
912541b0 KS |
637 | char result[UTIL_LINE_SIZE]; |
638 | char *line; | |
639 | int err; | |
640 | ||
bbf35206 | 641 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)); |
912541b0 KS |
642 | if (err < 0) |
643 | return err; | |
644 | ||
645 | line = result; | |
646 | while (line != NULL) { | |
647 | char *pos; | |
648 | ||
649 | pos = strchr(line, '\n'); | |
650 | if (pos != NULL) { | |
651 | pos[0] = '\0'; | |
652 | pos = &pos[1]; | |
653 | } | |
bbf35206 | 654 | import_property_from_string(event->dev, line); |
912541b0 KS |
655 | line = pos; |
656 | } | |
657 | return 0; | |
319c6700 KS |
658 | } |
659 | ||
9ec6e95b | 660 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
661 | struct udev_device *dev_parent; |
662 | struct udev_list_entry *list_entry; | |
663 | ||
3b64e4d4 TG |
664 | assert(dev); |
665 | assert(filter); | |
666 | ||
912541b0 KS |
667 | dev_parent = udev_device_get_parent(dev); |
668 | if (dev_parent == NULL) | |
669 | return -1; | |
670 | ||
912541b0 KS |
671 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
672 | const char *key = udev_list_entry_get_name(list_entry); | |
673 | const char *val = udev_list_entry_get_value(list_entry); | |
674 | ||
ece174c5 | 675 | if (fnmatch(filter, key, 0) == 0) |
df546eb5 | 676 | udev_device_add_property(dev, key, val); |
912541b0 KS |
677 | } |
678 | return 0; | |
e2ecb34f KS |
679 | } |
680 | ||
9ec6e95b | 681 | static int attr_subst_subdir(char *attr, size_t len) { |
912541b0 KS |
682 | bool found = false; |
683 | ||
684 | if (strstr(attr, "/*/")) { | |
685 | char *pos; | |
686 | char dirname[UTIL_PATH_SIZE]; | |
687 | const char *tail; | |
688 | DIR *dir; | |
689 | ||
d5a89d7d | 690 | strscpy(dirname, sizeof(dirname), attr); |
912541b0 KS |
691 | pos = strstr(dirname, "/*/"); |
692 | if (pos == NULL) | |
693 | return -1; | |
694 | pos[0] = '\0'; | |
695 | tail = &pos[2]; | |
696 | dir = opendir(dirname); | |
697 | if (dir != NULL) { | |
698 | struct dirent *dent; | |
699 | ||
700 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
701 | struct stat stats; | |
702 | ||
703 | if (dent->d_name[0] == '.') | |
704 | continue; | |
d5a89d7d | 705 | strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); |
912541b0 KS |
706 | if (stat(attr, &stats) == 0) { |
707 | found = true; | |
708 | break; | |
709 | } | |
710 | } | |
711 | closedir(dir); | |
712 | } | |
713 | } | |
714 | ||
715 | return found; | |
0ea5e96e KS |
716 | } |
717 | ||
9ec6e95b | 718 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
719 | char *linepos; |
720 | char *temp; | |
721 | ||
722 | linepos = *line; | |
723 | if (linepos == NULL || linepos[0] == '\0') | |
724 | return -1; | |
725 | ||
726 | /* skip whitespace */ | |
727 | while (isspace(linepos[0]) || linepos[0] == ',') | |
728 | linepos++; | |
729 | ||
730 | /* get the key */ | |
731 | if (linepos[0] == '\0') | |
732 | return -1; | |
733 | *key = linepos; | |
734 | ||
735 | for (;;) { | |
736 | linepos++; | |
737 | if (linepos[0] == '\0') | |
738 | return -1; | |
739 | if (isspace(linepos[0])) | |
740 | break; | |
741 | if (linepos[0] == '=') | |
742 | break; | |
8e3ba377 | 743 | if ((linepos[0] == '+') || (linepos[0] == '-') || (linepos[0] == '!') || (linepos[0] == ':')) |
912541b0 KS |
744 | if (linepos[1] == '=') |
745 | break; | |
746 | } | |
747 | ||
748 | /* remember end of key */ | |
749 | temp = linepos; | |
750 | ||
751 | /* skip whitespace after key */ | |
752 | while (isspace(linepos[0])) | |
753 | linepos++; | |
754 | if (linepos[0] == '\0') | |
755 | return -1; | |
756 | ||
757 | /* get operation type */ | |
758 | if (linepos[0] == '=' && linepos[1] == '=') { | |
759 | *op = OP_MATCH; | |
760 | linepos += 2; | |
761 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
762 | *op = OP_NOMATCH; | |
763 | linepos += 2; | |
764 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
765 | *op = OP_ADD; | |
766 | linepos += 2; | |
8e3ba377 DH |
767 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
768 | *op = OP_REMOVE; | |
769 | linepos += 2; | |
912541b0 KS |
770 | } else if (linepos[0] == '=') { |
771 | *op = OP_ASSIGN; | |
772 | linepos++; | |
773 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
774 | *op = OP_ASSIGN_FINAL; | |
775 | linepos += 2; | |
776 | } else | |
777 | return -1; | |
778 | ||
779 | /* terminate key */ | |
780 | temp[0] = '\0'; | |
781 | ||
782 | /* skip whitespace after operator */ | |
783 | while (isspace(linepos[0])) | |
784 | linepos++; | |
785 | if (linepos[0] == '\0') | |
786 | return -1; | |
787 | ||
788 | /* get the value */ | |
789 | if (linepos[0] == '"') | |
790 | linepos++; | |
791 | else | |
792 | return -1; | |
793 | *value = linepos; | |
794 | ||
795 | /* terminate */ | |
796 | temp = strchr(linepos, '"'); | |
797 | if (!temp) | |
798 | return -1; | |
799 | temp[0] = '\0'; | |
800 | temp++; | |
912541b0 KS |
801 | |
802 | /* move line to next key */ | |
803 | *line = temp; | |
804 | return 0; | |
6880b25d | 805 | } |
95776dc6 | 806 | |
6880b25d | 807 | /* extract possible KEY{attr} */ |
9ec6e95b | 808 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
809 | char *pos; |
810 | char *attr; | |
811 | ||
812 | attr = strchr(str, '{'); | |
813 | if (attr != NULL) { | |
814 | attr++; | |
815 | pos = strchr(attr, '}'); | |
816 | if (pos == NULL) { | |
9f6445e3 | 817 | log_error("missing closing brace for format"); |
912541b0 KS |
818 | return NULL; |
819 | } | |
820 | pos[0] = '\0'; | |
912541b0 KS |
821 | return attr; |
822 | } | |
823 | return NULL; | |
6880b25d | 824 | } |
95776dc6 | 825 | |
0ef254d5 | 826 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
912541b0 | 827 | enum operation_type op, |
9ec6e95b | 828 | const char *value, const void *data) { |
912541b0 KS |
829 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; |
830 | const char *attr = NULL; | |
831 | ||
29804cc1 | 832 | memzero(token, sizeof(struct token)); |
912541b0 KS |
833 | |
834 | switch (type) { | |
835 | case TK_M_ACTION: | |
836 | case TK_M_DEVPATH: | |
837 | case TK_M_KERNEL: | |
838 | case TK_M_SUBSYSTEM: | |
839 | case TK_M_DRIVER: | |
840 | case TK_M_WAITFOR: | |
841 | case TK_M_DEVLINK: | |
842 | case TK_M_NAME: | |
843 | case TK_M_KERNELS: | |
844 | case TK_M_SUBSYSTEMS: | |
845 | case TK_M_DRIVERS: | |
846 | case TK_M_TAGS: | |
847 | case TK_M_PROGRAM: | |
848 | case TK_M_IMPORT_FILE: | |
849 | case TK_M_IMPORT_PROG: | |
850 | case TK_M_IMPORT_DB: | |
851 | case TK_M_IMPORT_CMDLINE: | |
852 | case TK_M_IMPORT_PARENT: | |
853 | case TK_M_RESULT: | |
854 | case TK_A_OWNER: | |
855 | case TK_A_GROUP: | |
856 | case TK_A_MODE: | |
8a173387 | 857 | case TK_A_DEVLINK: |
912541b0 KS |
858 | case TK_A_NAME: |
859 | case TK_A_GOTO: | |
860 | case TK_M_TAG: | |
861 | case TK_A_TAG: | |
d6f116a7 | 862 | case TK_A_STATIC_NODE: |
915bf0f6 | 863 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
864 | break; |
865 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 866 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
867 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
868 | break; | |
869 | case TK_M_ENV: | |
870 | case TK_M_ATTR: | |
f4cf2e5b | 871 | case TK_M_SYSCTL: |
912541b0 KS |
872 | case TK_M_ATTRS: |
873 | case TK_A_ATTR: | |
f4cf2e5b | 874 | case TK_A_SYSCTL: |
912541b0 | 875 | case TK_A_ENV: |
c26547d6 | 876 | case TK_A_SECLABEL: |
912541b0 | 877 | attr = data; |
915bf0f6 KS |
878 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
879 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 880 | break; |
912541b0 | 881 | case TK_M_TEST: |
915bf0f6 | 882 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
883 | if (data != NULL) |
884 | token->key.mode = *(mode_t *)data; | |
885 | break; | |
886 | case TK_A_STRING_ESCAPE_NONE: | |
887 | case TK_A_STRING_ESCAPE_REPLACE: | |
888 | case TK_A_DB_PERSIST: | |
889 | break; | |
83cd6b75 | 890 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 891 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 892 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 893 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
894 | break; |
895 | case TK_A_INOTIFY_WATCH: | |
896 | case TK_A_DEVLINK_PRIO: | |
897 | token->key.devlink_prio = *(int *)data; | |
898 | break; | |
899 | case TK_A_OWNER_ID: | |
900 | token->key.uid = *(uid_t *)data; | |
901 | break; | |
902 | case TK_A_GROUP_ID: | |
903 | token->key.gid = *(gid_t *)data; | |
904 | break; | |
905 | case TK_A_MODE_ID: | |
906 | token->key.mode = *(mode_t *)data; | |
907 | break; | |
912541b0 KS |
908 | case TK_RULE: |
909 | case TK_M_PARENTS_MIN: | |
910 | case TK_M_PARENTS_MAX: | |
911 | case TK_M_MAX: | |
912 | case TK_END: | |
913 | case TK_UNSET: | |
9f6445e3 | 914 | log_error("wrong type %u", type); |
912541b0 KS |
915 | return -1; |
916 | } | |
917 | ||
918 | if (value != NULL && type < TK_M_MAX) { | |
919 | /* check if we need to split or call fnmatch() while matching rules */ | |
920 | enum string_glob_type glob; | |
921 | int has_split; | |
922 | int has_glob; | |
923 | ||
924 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 925 | has_glob = string_is_glob(value); |
912541b0 KS |
926 | if (has_split && has_glob) { |
927 | glob = GL_SPLIT_GLOB; | |
928 | } else if (has_split) { | |
929 | glob = GL_SPLIT; | |
930 | } else if (has_glob) { | |
33502ffe | 931 | if (streq(value, "?*")) |
912541b0 KS |
932 | glob = GL_SOMETHING; |
933 | else | |
934 | glob = GL_GLOB; | |
935 | } else { | |
936 | glob = GL_PLAIN; | |
937 | } | |
938 | token->key.glob = glob; | |
939 | } | |
940 | ||
941 | if (value != NULL && type > TK_M_MAX) { | |
942 | /* check if assigned value has substitution chars */ | |
943 | if (value[0] == '[') | |
944 | token->key.subst = SB_SUBSYS; | |
945 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
946 | token->key.subst = SB_FORMAT; | |
947 | else | |
948 | token->key.subst = SB_NONE; | |
949 | } | |
950 | ||
951 | if (attr != NULL) { | |
d6f116a7 | 952 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
953 | if (attr[0] == '[') |
954 | token->key.attrsubst = SB_SUBSYS; | |
955 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
956 | token->key.attrsubst = SB_FORMAT; | |
957 | else | |
958 | token->key.attrsubst = SB_NONE; | |
959 | } | |
960 | ||
961 | token->key.type = type; | |
962 | token->key.op = op; | |
963 | rule_tmp->token_cur++; | |
8fef0ff2 | 964 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) { |
9f6445e3 | 965 | log_error("temporary rule array too small"); |
912541b0 KS |
966 | return -1; |
967 | } | |
968 | return 0; | |
6880b25d | 969 | } |
e57e7bc1 | 970 | |
9ec6e95b | 971 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
972 | unsigned int i; |
973 | unsigned int start = 0; | |
974 | unsigned int end = rule_tmp->token_cur; | |
975 | ||
976 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
977 | enum token_type next_val = TK_UNSET; | |
978 | unsigned int next_idx = 0; | |
979 | unsigned int j; | |
980 | ||
981 | /* find smallest value */ | |
982 | for (j = start; j < end; j++) { | |
983 | if (rule_tmp->token[j].type == TK_UNSET) | |
984 | continue; | |
985 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
986 | next_val = rule_tmp->token[j].type; | |
987 | next_idx = j; | |
988 | } | |
989 | } | |
990 | ||
991 | /* add token and mark done */ | |
992 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
993 | return -1; | |
994 | rule_tmp->token[next_idx].type = TK_UNSET; | |
995 | ||
996 | /* shrink range */ | |
997 | if (next_idx == start) | |
998 | start++; | |
999 | if (next_idx+1 == end) | |
1000 | end--; | |
1001 | } | |
1002 | return 0; | |
724257d9 GKH |
1003 | } |
1004 | ||
6880b25d | 1005 | static int add_rule(struct udev_rules *rules, char *line, |
9ec6e95b | 1006 | const char *filename, unsigned int filename_off, unsigned int lineno) { |
912541b0 | 1007 | char *linepos; |
04a9d3a0 | 1008 | const char *attr; |
84198c18 TG |
1009 | struct rule_tmp rule_tmp = { |
1010 | .rules = rules, | |
1011 | .rule.type = TK_RULE, | |
1012 | }; | |
912541b0 | 1013 | |
775f8b3c KS |
1014 | /* the offset in the rule is limited to unsigned short */ |
1015 | if (filename_off < USHRT_MAX) | |
1016 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1017 | rule_tmp.rule.rule.filename_line = lineno; |
1018 | ||
1019 | linepos = line; | |
1020 | for (;;) { | |
1021 | char *key; | |
1022 | char *value; | |
1023 | enum operation_type op; | |
1024 | ||
e736cf35 | 1025 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1026 | /* Avoid erroring on trailing whitespace. This is probably rare |
1027 | * so save the work for the error case instead of always trying | |
1028 | * to strip the trailing whitespace with strstrip(). */ | |
1029 | while (isblank(*linepos)) | |
1030 | linepos++; | |
1031 | ||
e736cf35 DR |
1032 | /* If we aren't at the end of the line, this is a parsing error. |
1033 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1034 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1035 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1036 | _cleanup_free_ char *tmp; |
1037 | ||
1038 | tmp = cescape(buf); | |
ff49bc32 | 1039 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1040 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1041 | if (*linepos == '#') |
75716dd8 | 1042 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1043 | } |
912541b0 | 1044 | break; |
e736cf35 | 1045 | } |
912541b0 | 1046 | |
33502ffe | 1047 | if (streq(key, "ACTION")) { |
912541b0 | 1048 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1049 | log_error("invalid ACTION operation"); |
912541b0 KS |
1050 | goto invalid; |
1051 | } | |
1052 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
1053 | continue; | |
1054 | } | |
1055 | ||
33502ffe | 1056 | if (streq(key, "DEVPATH")) { |
912541b0 | 1057 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1058 | log_error("invalid DEVPATH operation"); |
912541b0 KS |
1059 | goto invalid; |
1060 | } | |
1061 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); | |
1062 | continue; | |
1063 | } | |
1064 | ||
33502ffe | 1065 | if (streq(key, "KERNEL")) { |
912541b0 | 1066 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1067 | log_error("invalid KERNEL operation"); |
912541b0 KS |
1068 | goto invalid; |
1069 | } | |
1070 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); | |
1071 | continue; | |
1072 | } | |
1073 | ||
33502ffe | 1074 | if (streq(key, "SUBSYSTEM")) { |
912541b0 | 1075 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1076 | log_error("invalid SUBSYSTEM operation"); |
912541b0 KS |
1077 | goto invalid; |
1078 | } | |
1079 | /* bus, class, subsystem events should all be the same */ | |
33502ffe KS |
1080 | if (streq(value, "subsystem") || |
1081 | streq(value, "bus") || | |
1082 | streq(value, "class")) { | |
1083 | if (streq(value, "bus") || streq(value, "class")) | |
9f6445e3 | 1084 | log_error("'%s' must be specified as 'subsystem' " |
912541b0 KS |
1085 | "please fix it in %s:%u", value, filename, lineno); |
1086 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); | |
1087 | } else | |
1088 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
1089 | continue; | |
1090 | } | |
1091 | ||
33502ffe | 1092 | if (streq(key, "DRIVER")) { |
912541b0 | 1093 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1094 | log_error("invalid DRIVER operation"); |
912541b0 KS |
1095 | goto invalid; |
1096 | } | |
1097 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); | |
1098 | continue; | |
1099 | } | |
1100 | ||
33502ffe | 1101 | if (startswith(key, "ATTR{")) { |
f8294e41 | 1102 | attr = get_key_attribute(rules->udev, key + strlen("ATTR")); |
912541b0 | 1103 | if (attr == NULL) { |
9f6445e3 | 1104 | log_error("error parsing ATTR attribute"); |
912541b0 KS |
1105 | goto invalid; |
1106 | } | |
8e3ba377 DH |
1107 | if (op == OP_REMOVE) { |
1108 | log_error("invalid ATTR operation"); | |
1109 | goto invalid; | |
1110 | } | |
f4cf2e5b | 1111 | if (op < OP_MATCH_MAX) |
912541b0 | 1112 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1113 | else |
912541b0 | 1114 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b KS |
1115 | continue; |
1116 | } | |
1117 | ||
1118 | if (startswith(key, "SYSCTL{")) { | |
1119 | attr = get_key_attribute(rules->udev, key + strlen("SYSCTL")); | |
1120 | if (attr == NULL) { | |
1121 | log_error("error parsing SYSCTL attribute"); | |
1122 | goto invalid; | |
1123 | } | |
1124 | if (op == OP_REMOVE) { | |
1125 | log_error("invalid SYSCTL operation"); | |
1126 | goto invalid; | |
912541b0 | 1127 | } |
f4cf2e5b KS |
1128 | if (op < OP_MATCH_MAX) |
1129 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1130 | else | |
1131 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 KS |
1132 | continue; |
1133 | } | |
1134 | ||
c26547d6 | 1135 | if (startswith(key, "SECLABEL{")) { |
f8294e41 | 1136 | attr = get_key_attribute(rules->udev, key + strlen("SECLABEL")); |
c26547d6 | 1137 | if (!attr) { |
9f6445e3 | 1138 | log_error("error parsing SECLABEL attribute"); |
c26547d6 KS |
1139 | goto invalid; |
1140 | } | |
8e3ba377 DH |
1141 | if (op == OP_REMOVE) { |
1142 | log_error("invalid SECLABEL operation"); | |
1143 | goto invalid; | |
1144 | } | |
c26547d6 KS |
1145 | |
1146 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
1147 | continue; | |
1148 | } | |
1149 | ||
33502ffe | 1150 | if (streq(key, "KERNELS")) { |
912541b0 | 1151 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1152 | log_error("invalid KERNELS operation"); |
912541b0 KS |
1153 | goto invalid; |
1154 | } | |
1155 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); | |
1156 | continue; | |
1157 | } | |
1158 | ||
33502ffe | 1159 | if (streq(key, "SUBSYSTEMS")) { |
912541b0 | 1160 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1161 | log_error("invalid SUBSYSTEMS operation"); |
912541b0 KS |
1162 | goto invalid; |
1163 | } | |
1164 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); | |
1165 | continue; | |
1166 | } | |
1167 | ||
33502ffe | 1168 | if (streq(key, "DRIVERS")) { |
912541b0 | 1169 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1170 | log_error("invalid DRIVERS operation"); |
912541b0 KS |
1171 | goto invalid; |
1172 | } | |
1173 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); | |
1174 | continue; | |
1175 | } | |
1176 | ||
33502ffe | 1177 | if (startswith(key, "ATTRS{")) { |
912541b0 | 1178 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1179 | log_error("invalid ATTRS operation"); |
912541b0 KS |
1180 | goto invalid; |
1181 | } | |
f8294e41 | 1182 | attr = get_key_attribute(rules->udev, key + strlen("ATTRS")); |
912541b0 | 1183 | if (attr == NULL) { |
9f6445e3 | 1184 | log_error("error parsing ATTRS attribute"); |
912541b0 KS |
1185 | goto invalid; |
1186 | } | |
33502ffe | 1187 | if (startswith(attr, "device/")) |
baa30fbc | 1188 | log_error("the 'device' link may not be available in a future kernel, " |
912541b0 KS |
1189 | "please fix it in %s:%u", filename, lineno); |
1190 | else if (strstr(attr, "../") != NULL) | |
baa30fbc | 1191 | log_error("do not reference parent sysfs directories directly, " |
912541b0 KS |
1192 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); |
1193 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); | |
1194 | continue; | |
1195 | } | |
1196 | ||
33502ffe | 1197 | if (streq(key, "TAGS")) { |
912541b0 | 1198 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1199 | log_error("invalid TAGS operation"); |
912541b0 KS |
1200 | goto invalid; |
1201 | } | |
1202 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); | |
1203 | continue; | |
1204 | } | |
1205 | ||
33502ffe | 1206 | if (startswith(key, "ENV{")) { |
f8294e41 | 1207 | attr = get_key_attribute(rules->udev, key + strlen("ENV")); |
912541b0 | 1208 | if (attr == NULL) { |
9f6445e3 | 1209 | log_error("error parsing ENV attribute"); |
912541b0 KS |
1210 | goto invalid; |
1211 | } | |
8e3ba377 DH |
1212 | if (op == OP_REMOVE) { |
1213 | log_error("invalid ENV operation"); | |
1214 | goto invalid; | |
1215 | } | |
912541b0 KS |
1216 | if (op < OP_MATCH_MAX) { |
1217 | if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
1218 | goto invalid; | |
1219 | } else { | |
1220 | static const char *blacklist[] = { | |
1221 | "ACTION", | |
1222 | "SUBSYSTEM", | |
1223 | "DEVTYPE", | |
1224 | "MAJOR", | |
1225 | "MINOR", | |
1226 | "DRIVER", | |
1227 | "IFINDEX", | |
1228 | "DEVNAME", | |
1229 | "DEVLINKS", | |
1230 | "DEVPATH", | |
1231 | "TAGS", | |
1232 | }; | |
1233 | unsigned int i; | |
1234 | ||
395ea978 KS |
1235 | for (i = 0; i < ELEMENTSOF(blacklist); i++) { |
1236 | if (!streq(attr, blacklist[i])) | |
912541b0 | 1237 | continue; |
9f6445e3 | 1238 | log_error("invalid ENV attribute, '%s' can not be set %s:%u", attr, filename, lineno); |
395ea978 KS |
1239 | goto invalid; |
1240 | } | |
912541b0 KS |
1241 | if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) |
1242 | goto invalid; | |
1243 | } | |
1244 | continue; | |
1245 | } | |
1246 | ||
33502ffe | 1247 | if (streq(key, "TAG")) { |
912541b0 KS |
1248 | if (op < OP_MATCH_MAX) |
1249 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1250 | else | |
1251 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
1252 | continue; | |
1253 | } | |
1254 | ||
33502ffe | 1255 | if (streq(key, "PROGRAM")) { |
8e3ba377 DH |
1256 | if (op == OP_REMOVE) { |
1257 | log_error("invalid PROGRAM operation"); | |
1258 | goto invalid; | |
1259 | } | |
912541b0 KS |
1260 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
1261 | continue; | |
1262 | } | |
1263 | ||
33502ffe | 1264 | if (streq(key, "RESULT")) { |
912541b0 | 1265 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1266 | log_error("invalid RESULT operation"); |
912541b0 KS |
1267 | goto invalid; |
1268 | } | |
1269 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); | |
1270 | continue; | |
1271 | } | |
1272 | ||
33502ffe | 1273 | if (startswith(key, "IMPORT")) { |
f8294e41 | 1274 | attr = get_key_attribute(rules->udev, key + strlen("IMPORT")); |
912541b0 | 1275 | if (attr == NULL) { |
9f6445e3 | 1276 | log_error("IMPORT{} type missing, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1277 | continue; |
1278 | } | |
8e3ba377 DH |
1279 | if (op == OP_REMOVE) { |
1280 | log_error("invalid IMPORT operation"); | |
1281 | goto invalid; | |
1282 | } | |
33502ffe | 1283 | if (streq(attr, "program")) { |
912541b0 KS |
1284 | /* find known built-in command */ |
1285 | if (value[0] != '/') { | |
1286 | enum udev_builtin_cmd cmd; | |
1287 | ||
1288 | cmd = udev_builtin_lookup(value); | |
1289 | if (cmd < UDEV_BUILTIN_MAX) { | |
9f6445e3 | 1290 | log_debug("IMPORT found builtin '%s', replacing %s:%u", |
baa30fbc | 1291 | value, filename, lineno); |
912541b0 KS |
1292 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1293 | continue; | |
1294 | } | |
1295 | } | |
912541b0 | 1296 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1297 | } else if (streq(attr, "builtin")) { |
912541b0 KS |
1298 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1299 | ||
912541b0 KS |
1300 | if (cmd < UDEV_BUILTIN_MAX) |
1301 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
1302 | else | |
9f6445e3 | 1303 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1304 | } else if (streq(attr, "file")) { |
912541b0 | 1305 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
33502ffe | 1306 | } else if (streq(attr, "db")) { |
912541b0 | 1307 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
33502ffe | 1308 | } else if (streq(attr, "cmdline")) { |
912541b0 | 1309 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
33502ffe | 1310 | } else if (streq(attr, "parent")) { |
912541b0 | 1311 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
83cd6b75 | 1312 | } else |
9f6445e3 | 1313 | log_error("IMPORT{} unknown type, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1314 | continue; |
1315 | } | |
1316 | ||
33502ffe | 1317 | if (startswith(key, "TEST")) { |
912541b0 KS |
1318 | mode_t mode = 0; |
1319 | ||
1320 | if (op > OP_MATCH_MAX) { | |
9f6445e3 | 1321 | log_error("invalid TEST operation"); |
912541b0 KS |
1322 | goto invalid; |
1323 | } | |
f8294e41 | 1324 | attr = get_key_attribute(rules->udev, key + strlen("TEST")); |
912541b0 KS |
1325 | if (attr != NULL) { |
1326 | mode = strtol(attr, NULL, 8); | |
1327 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1328 | } else { | |
1329 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1330 | } | |
1331 | continue; | |
1332 | } | |
1333 | ||
33502ffe | 1334 | if (startswith(key, "RUN")) { |
f8294e41 | 1335 | attr = get_key_attribute(rules->udev, key + strlen("RUN")); |
83cd6b75 KS |
1336 | if (attr == NULL) |
1337 | attr = "program"; | |
8e3ba377 DH |
1338 | if (op == OP_REMOVE) { |
1339 | log_error("invalid RUN operation"); | |
1340 | goto invalid; | |
1341 | } | |
83cd6b75 | 1342 | |
33502ffe | 1343 | if (streq(attr, "builtin")) { |
83cd6b75 KS |
1344 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1345 | ||
1346 | if (cmd < UDEV_BUILTIN_MAX) | |
1347 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1348 | else | |
ec3281d3 | 1349 | log_error("RUN{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1350 | } else if (streq(attr, "program")) { |
83cd6b75 KS |
1351 | enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
1352 | ||
83cd6b75 KS |
1353 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1354 | } else { | |
9f6445e3 | 1355 | log_error("RUN{} unknown type, ignoring RUN %s:%u", filename, lineno); |
83cd6b75 KS |
1356 | } |
1357 | ||
912541b0 KS |
1358 | continue; |
1359 | } | |
1360 | ||
33502ffe | 1361 | if (streq(key, "LABEL")) { |
8e3ba377 DH |
1362 | if (op == OP_REMOVE) { |
1363 | log_error("invalid LABEL operation"); | |
1364 | goto invalid; | |
1365 | } | |
915bf0f6 | 1366 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 KS |
1367 | continue; |
1368 | } | |
1369 | ||
33502ffe | 1370 | if (streq(key, "GOTO")) { |
8e3ba377 DH |
1371 | if (op == OP_REMOVE) { |
1372 | log_error("invalid GOTO operation"); | |
1373 | goto invalid; | |
1374 | } | |
912541b0 KS |
1375 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
1376 | continue; | |
1377 | } | |
1378 | ||
33502ffe | 1379 | if (startswith(key, "NAME")) { |
8e3ba377 DH |
1380 | if (op == OP_REMOVE) { |
1381 | log_error("invalid NAME operation"); | |
1382 | goto invalid; | |
1383 | } | |
912541b0 KS |
1384 | if (op < OP_MATCH_MAX) { |
1385 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1386 | } else { | |
33502ffe | 1387 | if (streq(value, "%k")) { |
baa30fbc | 1388 | log_error("NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " |
912541b0 KS |
1389 | "please remove it from %s:%u\n", filename, lineno); |
1390 | continue; | |
1391 | } | |
1392 | if (value[0] == '\0') { | |
baa30fbc KS |
1393 | log_debug("NAME=\"\" is ignored, because udev will not delete any device nodes, " |
1394 | "please remove it from %s:%u\n", filename, lineno); | |
912541b0 KS |
1395 | continue; |
1396 | } | |
1397 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1398 | } | |
1399 | rule_tmp.rule.rule.can_set_name = true; | |
1400 | continue; | |
1401 | } | |
1402 | ||
8a173387 | 1403 | if (streq(key, "SYMLINK")) { |
8e3ba377 DH |
1404 | if (op == OP_REMOVE) { |
1405 | log_error("invalid SYMLINK operation"); | |
1406 | goto invalid; | |
1407 | } | |
8a173387 | 1408 | if (op < OP_MATCH_MAX) |
912541b0 | 1409 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1410 | else |
1411 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 KS |
1412 | rule_tmp.rule.rule.can_set_name = true; |
1413 | continue; | |
1414 | } | |
1415 | ||
33502ffe | 1416 | if (streq(key, "OWNER")) { |
912541b0 KS |
1417 | uid_t uid; |
1418 | char *endptr; | |
1419 | ||
8e3ba377 DH |
1420 | if (op == OP_REMOVE) { |
1421 | log_error("invalid OWNER operation"); | |
1422 | goto invalid; | |
1423 | } | |
1424 | ||
912541b0 KS |
1425 | uid = strtoul(value, &endptr, 10); |
1426 | if (endptr[0] == '\0') { | |
1427 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1428 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1429 | uid = add_uid(rules, value); | |
1430 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1f6b4113 | 1431 | } else if (rules->resolve_names >= 0) |
912541b0 | 1432 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1433 | |
912541b0 KS |
1434 | rule_tmp.rule.rule.can_set_name = true; |
1435 | continue; | |
1436 | } | |
1437 | ||
33502ffe | 1438 | if (streq(key, "GROUP")) { |
912541b0 KS |
1439 | gid_t gid; |
1440 | char *endptr; | |
1441 | ||
8e3ba377 DH |
1442 | if (op == OP_REMOVE) { |
1443 | log_error("invalid GROUP operation"); | |
1444 | goto invalid; | |
1445 | } | |
1446 | ||
912541b0 KS |
1447 | gid = strtoul(value, &endptr, 10); |
1448 | if (endptr[0] == '\0') { | |
1449 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1450 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1451 | gid = add_gid(rules, value); | |
1452 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1f6b4113 | 1453 | } else if (rules->resolve_names >= 0) |
912541b0 | 1454 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1455 | |
912541b0 KS |
1456 | rule_tmp.rule.rule.can_set_name = true; |
1457 | continue; | |
1458 | } | |
1459 | ||
33502ffe | 1460 | if (streq(key, "MODE")) { |
912541b0 KS |
1461 | mode_t mode; |
1462 | char *endptr; | |
1463 | ||
8e3ba377 DH |
1464 | if (op == OP_REMOVE) { |
1465 | log_error("invalid MODE operation"); | |
1466 | goto invalid; | |
1467 | } | |
1468 | ||
912541b0 KS |
1469 | mode = strtol(value, &endptr, 8); |
1470 | if (endptr[0] == '\0') | |
1471 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1472 | else | |
1473 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1474 | rule_tmp.rule.rule.can_set_name = true; | |
1475 | continue; | |
1476 | } | |
1477 | ||
33502ffe | 1478 | if (streq(key, "OPTIONS")) { |
912541b0 KS |
1479 | const char *pos; |
1480 | ||
8e3ba377 DH |
1481 | if (op == OP_REMOVE) { |
1482 | log_error("invalid OPTIONS operation"); | |
1483 | goto invalid; | |
1484 | } | |
1485 | ||
912541b0 KS |
1486 | pos = strstr(value, "link_priority="); |
1487 | if (pos != NULL) { | |
1488 | int prio = atoi(&pos[strlen("link_priority=")]); | |
1489 | ||
1490 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1491 | } |
1492 | ||
9f20a8a3 | 1493 | pos = strstr(value, "string_escape="); |
912541b0 KS |
1494 | if (pos != NULL) { |
1495 | pos = &pos[strlen("string_escape=")]; | |
33502ffe | 1496 | if (startswith(pos, "none")) |
912541b0 | 1497 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1498 | else if (startswith(pos, "replace")) |
912541b0 KS |
1499 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1500 | } | |
1501 | ||
1502 | pos = strstr(value, "db_persist"); | |
1503 | if (pos != NULL) | |
1504 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1505 | ||
1506 | pos = strstr(value, "nowatch"); | |
1507 | if (pos != NULL) { | |
1508 | const int off = 0; | |
1509 | ||
1510 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1511 | } else { |
1512 | pos = strstr(value, "watch"); | |
1513 | if (pos != NULL) { | |
1514 | const int on = 1; | |
1515 | ||
1516 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1517 | } |
1518 | } | |
1519 | ||
1520 | pos = strstr(value, "static_node="); | |
1521 | if (pos != NULL) { | |
1522 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); | |
1523 | rule_tmp.rule.rule.has_static_node = true; | |
1524 | } | |
1525 | ||
1526 | continue; | |
1527 | } | |
1528 | ||
9f6445e3 | 1529 | log_error("unknown key '%s' in %s:%u", key, filename, lineno); |
912541b0 KS |
1530 | goto invalid; |
1531 | } | |
1532 | ||
1533 | /* add rule token */ | |
1534 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; | |
1535 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1536 | goto invalid; | |
1537 | ||
1538 | /* add tokens to list, sorted by type */ | |
1539 | if (sort_token(rules, &rule_tmp) != 0) | |
1540 | goto invalid; | |
1541 | ||
1542 | return 0; | |
c7521974 | 1543 | invalid: |
9f6445e3 | 1544 | log_error("invalid rule '%s:%u'", filename, lineno); |
912541b0 | 1545 | return -1; |
c7521974 KS |
1546 | } |
1547 | ||
9ec6e95b | 1548 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1549 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1550 | unsigned int first_token; |
775f8b3c | 1551 | unsigned int filename_off; |
912541b0 KS |
1552 | char line[UTIL_LINE_SIZE]; |
1553 | int line_nr = 0; | |
1554 | unsigned int i; | |
1555 | ||
ed88bcfb ZJS |
1556 | f = fopen(filename, "re"); |
1557 | if (!f) { | |
1558 | if (errno == ENOENT) | |
1559 | return 0; | |
1560 | else | |
1561 | return -errno; | |
775f8b3c | 1562 | } |
912541b0 | 1563 | |
ed88bcfb ZJS |
1564 | if (null_or_empty_fd(fileno(f))) { |
1565 | log_debug("Skipping empty file: %s", filename); | |
1566 | return 0; | |
1567 | } else | |
1568 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1569 | |
1570 | first_token = rules->token_cur; | |
915bf0f6 | 1571 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1572 | |
1573 | while (fgets(line, sizeof(line), f) != NULL) { | |
1574 | char *key; | |
1575 | size_t len; | |
1576 | ||
1577 | /* skip whitespace */ | |
1578 | line_nr++; | |
1579 | key = line; | |
1580 | while (isspace(key[0])) | |
1581 | key++; | |
1582 | ||
1583 | /* comment */ | |
1584 | if (key[0] == '#') | |
1585 | continue; | |
1586 | ||
1587 | len = strlen(line); | |
1588 | if (len < 3) | |
1589 | continue; | |
1590 | ||
1591 | /* continue reading if backslash+newline is found */ | |
1592 | while (line[len-2] == '\\') { | |
1593 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1594 | break; | |
1595 | if (strlen(&line[len-2]) < 2) | |
1596 | break; | |
1597 | line_nr++; | |
1598 | len = strlen(line); | |
1599 | } | |
1600 | ||
1601 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1602 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1603 | continue; |
1604 | } | |
1605 | add_rule(rules, key, filename, filename_off, line_nr); | |
1606 | } | |
912541b0 KS |
1607 | |
1608 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1609 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1610 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1611 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1612 | unsigned int j; |
1613 | ||
1614 | for (j = i+1; j < rules->token_cur; j++) { | |
1615 | if (rules->tokens[j].type != TK_RULE) | |
1616 | continue; | |
1617 | if (rules->tokens[j].rule.label_off == 0) | |
1618 | continue; | |
915bf0f6 | 1619 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1620 | continue; |
1621 | rules->tokens[i].key.rule_goto = j; | |
1622 | break; | |
1623 | } | |
1624 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1625 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1626 | } |
1627 | } | |
1628 | return 0; | |
c7521974 KS |
1629 | } |
1630 | ||
9ec6e95b | 1631 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1632 | struct udev_rules *rules; |
1633 | struct udev_list file_list; | |
912541b0 | 1634 | struct token end_token; |
775f8b3c KS |
1635 | char **files, **f; |
1636 | int r; | |
912541b0 | 1637 | |
955d98c9 | 1638 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1639 | if (rules == NULL) |
1640 | return NULL; | |
1641 | rules->udev = udev; | |
1642 | rules->resolve_names = resolve_names; | |
1643 | udev_list_init(udev, &file_list, true); | |
1644 | ||
1645 | /* init token array and string buffer */ | |
1646 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1647 | if (rules->tokens == NULL) |
1648 | return udev_rules_unref(rules); | |
912541b0 KS |
1649 | rules->token_max = PREALLOC_TOKEN; |
1650 | ||
915bf0f6 KS |
1651 | rules->strbuf = strbuf_new(); |
1652 | if (!rules->strbuf) | |
0820a4f0 VP |
1653 | return udev_rules_unref(rules); |
1654 | ||
3b8c1cb0 KS |
1655 | udev_rules_check_timestamp(rules); |
1656 | ||
2ad8416d | 1657 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1658 | if (r < 0) { |
da927ba9 | 1659 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1660 | return udev_rules_unref(rules); |
912541b0 KS |
1661 | } |
1662 | ||
775f8b3c KS |
1663 | /* |
1664 | * The offset value in the rules strct is limited; add all | |
1665 | * rules file names to the beginning of the string buffer. | |
1666 | */ | |
1667 | STRV_FOREACH(f, files) | |
915bf0f6 | 1668 | rules_add_string(rules, *f); |
912541b0 | 1669 | |
775f8b3c KS |
1670 | STRV_FOREACH(f, files) |
1671 | parse_file(rules, *f); | |
1672 | ||
1673 | strv_free(files); | |
912541b0 | 1674 | |
29804cc1 | 1675 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1676 | end_token.type = TK_END; |
1677 | add_token(rules, &end_token); | |
9f6445e3 | 1678 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1679 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1680 | |
915bf0f6 | 1681 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1682 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1683 | rules->strbuf->in_count, rules->strbuf->in_len, |
1684 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1685 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1686 | |
1687 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1688 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1689 | rules->uids_cur = 0; |
1690 | rules->uids_max = 0; | |
a1e58e8e | 1691 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1692 | rules->gids_cur = 0; |
1693 | rules->gids_max = 0; | |
1694 | ||
1695 | dump_rules(rules); | |
1696 | return rules; | |
c7521974 KS |
1697 | } |
1698 | ||
9ec6e95b | 1699 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1700 | if (rules == NULL) |
1701 | return NULL; | |
1702 | free(rules->tokens); | |
915bf0f6 | 1703 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1704 | free(rules->uids); |
1705 | free(rules->gids); | |
1706 | free(rules); | |
1707 | return NULL; | |
c7521974 | 1708 | } |
6880b25d | 1709 | |
9ec6e95b | 1710 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1711 | if (!rules) |
1712 | return false; | |
1713 | ||
2ad8416d | 1714 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1715 | } |
1716 | ||
9ec6e95b | 1717 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1718 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1719 | char *pos; |
1720 | bool match = false; | |
1721 | ||
1722 | if (val == NULL) | |
1723 | val = ""; | |
1724 | ||
1725 | switch (token->key.glob) { | |
1726 | case GL_PLAIN: | |
33502ffe | 1727 | match = (streq(key_value, val)); |
912541b0 KS |
1728 | break; |
1729 | case GL_GLOB: | |
1730 | match = (fnmatch(key_value, val, 0) == 0); | |
1731 | break; | |
1732 | case GL_SPLIT: | |
1733 | { | |
33502ffe | 1734 | const char *s; |
912541b0 KS |
1735 | size_t len; |
1736 | ||
915bf0f6 | 1737 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1738 | len = strlen(val); |
1739 | for (;;) { | |
1740 | const char *next; | |
1741 | ||
33502ffe | 1742 | next = strchr(s, '|'); |
912541b0 | 1743 | if (next != NULL) { |
33502ffe | 1744 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1745 | |
641906e9 | 1746 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1747 | if (match) |
1748 | break; | |
1749 | } else { | |
33502ffe | 1750 | match = (streq(s, val)); |
912541b0 KS |
1751 | break; |
1752 | } | |
33502ffe | 1753 | s = &next[1]; |
912541b0 KS |
1754 | } |
1755 | break; | |
1756 | } | |
1757 | case GL_SPLIT_GLOB: | |
1758 | { | |
1759 | char value[UTIL_PATH_SIZE]; | |
1760 | ||
d5a89d7d | 1761 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1762 | key_value = value; |
1763 | while (key_value != NULL) { | |
1764 | pos = strchr(key_value, '|'); | |
1765 | if (pos != NULL) { | |
1766 | pos[0] = '\0'; | |
1767 | pos = &pos[1]; | |
1768 | } | |
912541b0 KS |
1769 | match = (fnmatch(key_value, val, 0) == 0); |
1770 | if (match) | |
1771 | break; | |
1772 | key_value = pos; | |
1773 | } | |
1774 | break; | |
1775 | } | |
1776 | case GL_SOMETHING: | |
1777 | match = (val[0] != '\0'); | |
1778 | break; | |
1779 | case GL_UNSET: | |
1780 | return -1; | |
1781 | } | |
1782 | ||
baa30fbc | 1783 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1784 | return 0; |
baa30fbc | 1785 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1786 | return 0; |
912541b0 | 1787 | return -1; |
6880b25d KS |
1788 | } |
1789 | ||
9ec6e95b | 1790 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1791 | const char *name; |
1792 | char nbuf[UTIL_NAME_SIZE]; | |
1793 | const char *value; | |
1794 | char vbuf[UTIL_NAME_SIZE]; | |
1795 | size_t len; | |
1796 | ||
915bf0f6 | 1797 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1798 | switch (cur->key.attrsubst) { |
1799 | case SB_FORMAT: | |
1800 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1801 | name = nbuf; | |
1802 | /* fall through */ | |
1803 | case SB_NONE: | |
1804 | value = udev_device_get_sysattr_value(dev, name); | |
1805 | if (value == NULL) | |
1806 | return -1; | |
1807 | break; | |
1808 | case SB_SUBSYS: | |
1809 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1810 | return -1; | |
1811 | value = vbuf; | |
1812 | break; | |
1813 | default: | |
1814 | return -1; | |
1815 | } | |
1816 | ||
1817 | /* remove trailing whitespace, if not asked to match for it */ | |
1818 | len = strlen(value); | |
1819 | if (len > 0 && isspace(value[len-1])) { | |
1820 | const char *key_value; | |
1821 | size_t klen; | |
1822 | ||
915bf0f6 | 1823 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1824 | klen = strlen(key_value); |
1825 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1826 | if (value != vbuf) { | |
d5a89d7d | 1827 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1828 | value = vbuf; |
1829 | } | |
1830 | while (len > 0 && isspace(vbuf[--len])) | |
1831 | vbuf[len] = '\0'; | |
912541b0 KS |
1832 | } |
1833 | } | |
1834 | ||
1835 | return match_key(rules, cur, value); | |
6880b25d KS |
1836 | } |
1837 | ||
1838 | enum escape_type { | |
912541b0 KS |
1839 | ESCAPE_UNSET, |
1840 | ESCAPE_NONE, | |
1841 | ESCAPE_REPLACE, | |
6880b25d KS |
1842 | }; |
1843 | ||
dd5eddd2 KS |
1844 | int udev_rules_apply_to_event(struct udev_rules *rules, |
1845 | struct udev_event *event, | |
1846 | usec_t timeout_usec, | |
67117413 | 1847 | usec_t timeout_warn_usec, |
8314de1d | 1848 | struct udev_list *properties_list) { |
912541b0 KS |
1849 | struct token *cur; |
1850 | struct token *rule; | |
1851 | enum escape_type esc = ESCAPE_UNSET; | |
1852 | bool can_set_name; | |
1853 | ||
1854 | if (rules->tokens == NULL) | |
1855 | return -1; | |
1856 | ||
33502ffe | 1857 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1858 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1859 | udev_device_get_ifindex(event->dev) > 0)); | |
1860 | ||
1861 | /* loop through token list, match, run actions or forward to next rule */ | |
1862 | cur = &rules->tokens[0]; | |
1863 | rule = cur; | |
1864 | for (;;) { | |
1865 | dump_token(rules, cur); | |
1866 | switch (cur->type) { | |
1867 | case TK_RULE: | |
1868 | /* current rule */ | |
1869 | rule = cur; | |
1870 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1871 | if (!can_set_name && rule->rule.can_set_name) | |
1872 | goto nomatch; | |
1873 | esc = ESCAPE_UNSET; | |
1874 | break; | |
1875 | case TK_M_ACTION: | |
1876 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1877 | goto nomatch; | |
1878 | break; | |
1879 | case TK_M_DEVPATH: | |
1880 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1881 | goto nomatch; | |
1882 | break; | |
1883 | case TK_M_KERNEL: | |
1884 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1885 | goto nomatch; | |
1886 | break; | |
1887 | case TK_M_DEVLINK: { | |
912541b0 KS |
1888 | struct udev_list_entry *list_entry; |
1889 | bool match = false; | |
1890 | ||
1891 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1892 | const char *devlink; | |
1893 | ||
920b52e4 | 1894 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1895 | if (match_key(rules, cur, devlink) == 0) { |
1896 | match = true; | |
1897 | break; | |
1898 | } | |
1899 | } | |
1900 | if (!match) | |
1901 | goto nomatch; | |
1902 | break; | |
1903 | } | |
1904 | case TK_M_NAME: | |
1905 | if (match_key(rules, cur, event->name) != 0) | |
1906 | goto nomatch; | |
1907 | break; | |
1908 | case TK_M_ENV: { | |
915bf0f6 | 1909 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1910 | const char *value; |
1911 | ||
1912 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1913 | |
1914 | /* check global properties */ | |
1915 | if (!value && properties_list) { | |
1916 | struct udev_list_entry *list_entry; | |
1917 | ||
1918 | list_entry = udev_list_get_entry(properties_list); | |
1919 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1920 | if (list_entry != NULL) | |
1921 | value = udev_list_entry_get_value(list_entry); | |
1922 | } | |
1923 | ||
1924 | if (!value) | |
912541b0 | 1925 | value = ""; |
912541b0 KS |
1926 | if (match_key(rules, cur, value)) |
1927 | goto nomatch; | |
1928 | break; | |
1929 | } | |
1930 | case TK_M_TAG: { | |
1931 | struct udev_list_entry *list_entry; | |
1932 | bool match = false; | |
1933 | ||
1934 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1935 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1936 | match = true; |
1937 | break; | |
1938 | } | |
1939 | } | |
1940 | if (!match && (cur->key.op != OP_NOMATCH)) | |
1941 | goto nomatch; | |
1942 | break; | |
1943 | } | |
1944 | case TK_M_SUBSYSTEM: | |
1945 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1946 | goto nomatch; | |
1947 | break; | |
1948 | case TK_M_DRIVER: | |
1949 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1950 | goto nomatch; | |
1951 | break; | |
912541b0 KS |
1952 | case TK_M_ATTR: |
1953 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1954 | goto nomatch; | |
1955 | break; | |
f4cf2e5b KS |
1956 | case TK_M_SYSCTL: { |
1957 | char filename[UTIL_PATH_SIZE]; | |
1958 | _cleanup_free_ char *value = NULL; | |
1959 | size_t len; | |
1960 | ||
1961 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
1962 | sysctl_normalize(filename); | |
1963 | if (sysctl_read(filename, &value) < 0) | |
1964 | goto nomatch; | |
1965 | ||
1966 | len = strlen(value); | |
1967 | while (len > 0 && isspace(value[--len])) | |
1968 | value[len] = '\0'; | |
1969 | if (match_key(rules, cur, value) != 0) | |
1970 | goto nomatch; | |
1971 | break; | |
1972 | } | |
912541b0 KS |
1973 | case TK_M_KERNELS: |
1974 | case TK_M_SUBSYSTEMS: | |
1975 | case TK_M_DRIVERS: | |
1976 | case TK_M_ATTRS: | |
1977 | case TK_M_TAGS: { | |
1978 | struct token *next; | |
1979 | ||
1980 | /* get whole sequence of parent matches */ | |
1981 | next = cur; | |
1982 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1983 | next++; | |
1984 | ||
1985 | /* loop over parents */ | |
1986 | event->dev_parent = event->dev; | |
1987 | for (;;) { | |
1988 | struct token *key; | |
1989 | ||
912541b0 KS |
1990 | /* loop over sequence of parent match keys */ |
1991 | for (key = cur; key < next; key++ ) { | |
1992 | dump_token(rules, key); | |
1993 | switch(key->type) { | |
1994 | case TK_M_KERNELS: | |
1995 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
1996 | goto try_parent; | |
1997 | break; | |
1998 | case TK_M_SUBSYSTEMS: | |
1999 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
2000 | goto try_parent; | |
2001 | break; | |
2002 | case TK_M_DRIVERS: | |
2003 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
2004 | goto try_parent; | |
2005 | break; | |
2006 | case TK_M_ATTRS: | |
2007 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
2008 | goto try_parent; | |
2009 | break; | |
2010 | case TK_M_TAGS: { | |
915bf0f6 | 2011 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
2012 | |
2013 | if (match && key->key.op == OP_NOMATCH) | |
2014 | goto try_parent; | |
2015 | if (!match && key->key.op == OP_MATCH) | |
2016 | goto try_parent; | |
2017 | break; | |
2018 | } | |
2019 | default: | |
2020 | goto nomatch; | |
2021 | } | |
912541b0 | 2022 | } |
912541b0 KS |
2023 | break; |
2024 | ||
2025 | try_parent: | |
2026 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
2027 | if (event->dev_parent == NULL) | |
2028 | goto nomatch; | |
2029 | } | |
2030 | /* move behind our sequence of parent match keys */ | |
2031 | cur = next; | |
2032 | continue; | |
2033 | } | |
2034 | case TK_M_TEST: { | |
2035 | char filename[UTIL_PATH_SIZE]; | |
2036 | struct stat statbuf; | |
2037 | int match; | |
2038 | ||
915bf0f6 | 2039 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2040 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
2041 | if (filename[0] != '/') { | |
2042 | char tmp[UTIL_PATH_SIZE]; | |
2043 | ||
d5a89d7d KS |
2044 | strscpy(tmp, sizeof(tmp), filename); |
2045 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
2046 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
2047 | } | |
2048 | } | |
2049 | attr_subst_subdir(filename, sizeof(filename)); | |
2050 | ||
2051 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 2052 | if (match && cur->key.mode > 0) |
912541b0 | 2053 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
2054 | if (match && cur->key.op == OP_NOMATCH) |
2055 | goto nomatch; | |
2056 | if (!match && cur->key.op == OP_MATCH) | |
2057 | goto nomatch; | |
2058 | break; | |
2059 | } | |
912541b0 KS |
2060 | case TK_M_PROGRAM: { |
2061 | char program[UTIL_PATH_SIZE]; | |
209b031e | 2062 | char result[UTIL_LINE_SIZE]; |
912541b0 | 2063 | |
a1e58e8e | 2064 | event->program_result = mfree(event->program_result); |
915bf0f6 | 2065 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
9f6445e3 | 2066 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 2067 | program, |
915bf0f6 | 2068 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2069 | rule->rule.filename_line); |
912541b0 | 2070 | |
bbf35206 | 2071 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)) < 0) { |
912541b0 KS |
2072 | if (cur->key.op != OP_NOMATCH) |
2073 | goto nomatch; | |
2074 | } else { | |
2075 | int count; | |
2076 | ||
2077 | util_remove_trailing_chars(result, '\n'); | |
2078 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2079 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
2080 | if (count > 0) | |
9f6445e3 | 2081 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2082 | } |
2083 | event->program_result = strdup(result); | |
912541b0 KS |
2084 | if (cur->key.op == OP_NOMATCH) |
2085 | goto nomatch; | |
2086 | } | |
2087 | break; | |
2088 | } | |
2089 | case TK_M_IMPORT_FILE: { | |
2090 | char import[UTIL_PATH_SIZE]; | |
2091 | ||
915bf0f6 | 2092 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2093 | if (import_file_into_properties(event->dev, import) != 0) |
2094 | if (cur->key.op != OP_NOMATCH) | |
2095 | goto nomatch; | |
2096 | break; | |
2097 | } | |
2098 | case TK_M_IMPORT_PROG: { | |
2099 | char import[UTIL_PATH_SIZE]; | |
2100 | ||
915bf0f6 | 2101 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 2102 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2103 | import, |
915bf0f6 | 2104 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2105 | rule->rule.filename_line); |
912541b0 | 2106 | |
8314de1d | 2107 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import) != 0) |
912541b0 KS |
2108 | if (cur->key.op != OP_NOMATCH) |
2109 | goto nomatch; | |
2110 | break; | |
2111 | } | |
2112 | case TK_M_IMPORT_BUILTIN: { | |
2113 | char command[UTIL_PATH_SIZE]; | |
2114 | ||
2115 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2116 | /* check if we ran already */ | |
2117 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2118 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2119 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2120 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2121 | rule->rule.filename_line); |
912541b0 KS |
2122 | /* return the result from earlier run */ |
2123 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2124 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2125 | goto nomatch; |
2126 | break; | |
2127 | } | |
2128 | /* mark as ran */ | |
2129 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2130 | } | |
2131 | ||
915bf0f6 | 2132 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2133 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2134 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2135 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2136 | rule->rule.filename_line); |
912541b0 KS |
2137 | |
2138 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2139 | /* remember failure */ | |
9f6445e3 | 2140 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2141 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2142 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2143 | if (cur->key.op != OP_NOMATCH) | |
2144 | goto nomatch; | |
2145 | } | |
2146 | break; | |
2147 | } | |
2148 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2149 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2150 | const char *value; |
2151 | ||
2152 | value = udev_device_get_property_value(event->dev_db, key); | |
df546eb5 TG |
2153 | if (value != NULL) |
2154 | udev_device_add_property(event->dev, key, value); | |
2155 | else { | |
912541b0 KS |
2156 | if (cur->key.op != OP_NOMATCH) |
2157 | goto nomatch; | |
2158 | } | |
2159 | break; | |
2160 | } | |
2161 | case TK_M_IMPORT_CMDLINE: { | |
2162 | FILE *f; | |
2163 | bool imported = false; | |
2164 | ||
47ef94ac | 2165 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2166 | if (f != NULL) { |
2167 | char cmdline[4096]; | |
2168 | ||
2169 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2170 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2171 | char *pos; |
2172 | ||
2173 | pos = strstr(cmdline, key); | |
2174 | if (pos != NULL) { | |
912541b0 KS |
2175 | pos += strlen(key); |
2176 | if (pos[0] == '\0' || isspace(pos[0])) { | |
2177 | /* we import simple flags as 'FLAG=1' */ | |
df546eb5 | 2178 | udev_device_add_property(event->dev, key, "1"); |
912541b0 KS |
2179 | imported = true; |
2180 | } else if (pos[0] == '=') { | |
2181 | const char *value; | |
2182 | ||
2183 | pos++; | |
2184 | value = pos; | |
2185 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2186 | pos++; | |
2187 | pos[0] = '\0'; | |
df546eb5 | 2188 | udev_device_add_property(event->dev, key, value); |
912541b0 KS |
2189 | imported = true; |
2190 | } | |
2191 | } | |
2192 | } | |
2193 | fclose(f); | |
2194 | } | |
2195 | if (!imported && cur->key.op != OP_NOMATCH) | |
2196 | goto nomatch; | |
2197 | break; | |
2198 | } | |
2199 | case TK_M_IMPORT_PARENT: { | |
2200 | char import[UTIL_PATH_SIZE]; | |
2201 | ||
915bf0f6 | 2202 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2203 | if (import_parent_into_properties(event->dev, import) != 0) |
2204 | if (cur->key.op != OP_NOMATCH) | |
2205 | goto nomatch; | |
2206 | break; | |
2207 | } | |
2208 | case TK_M_RESULT: | |
2209 | if (match_key(rules, cur, event->program_result) != 0) | |
2210 | goto nomatch; | |
2211 | break; | |
2212 | case TK_A_STRING_ESCAPE_NONE: | |
2213 | esc = ESCAPE_NONE; | |
2214 | break; | |
2215 | case TK_A_STRING_ESCAPE_REPLACE: | |
2216 | esc = ESCAPE_REPLACE; | |
2217 | break; | |
2218 | case TK_A_DB_PERSIST: | |
2219 | udev_device_set_db_persist(event->dev); | |
2220 | break; | |
2221 | case TK_A_INOTIFY_WATCH: | |
2222 | if (event->inotify_watch_final) | |
2223 | break; | |
2224 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2225 | event->inotify_watch_final = true; | |
2226 | event->inotify_watch = cur->key.watch; | |
2227 | break; | |
2228 | case TK_A_DEVLINK_PRIO: | |
2229 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2230 | break; | |
2231 | case TK_A_OWNER: { | |
2232 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2233 | const char *ow = owner; |
2234 | int r; | |
912541b0 KS |
2235 | |
2236 | if (event->owner_final) | |
2237 | break; | |
2238 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2239 | event->owner_final = true; | |
915bf0f6 | 2240 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2241 | event->owner_set = true; |
23bf8dd7 TG |
2242 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2243 | if (r < 0) { | |
2244 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2245 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 2246 | else |
279d3c9c | 2247 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 TG |
2248 | |
2249 | event->uid = 0; | |
2250 | } | |
9f6445e3 | 2251 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2252 | event->uid, |
915bf0f6 | 2253 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2254 | rule->rule.filename_line); |
912541b0 KS |
2255 | break; |
2256 | } | |
2257 | case TK_A_GROUP: { | |
2258 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2259 | const char *gr = group; |
2260 | int r; | |
912541b0 KS |
2261 | |
2262 | if (event->group_final) | |
2263 | break; | |
2264 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2265 | event->group_final = true; | |
915bf0f6 | 2266 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2267 | event->group_set = true; |
23bf8dd7 TG |
2268 | r = get_group_creds(&gr, &event->gid); |
2269 | if (r < 0) { | |
2270 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2271 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 2272 | else |
279d3c9c | 2273 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 TG |
2274 | |
2275 | event->gid = 0; | |
2276 | } | |
9f6445e3 | 2277 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2278 | event->gid, |
915bf0f6 | 2279 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2280 | rule->rule.filename_line); |
912541b0 KS |
2281 | break; |
2282 | } | |
2283 | case TK_A_MODE: { | |
2284 | char mode_str[UTIL_NAME_SIZE]; | |
2285 | mode_t mode; | |
2286 | char *endptr; | |
2287 | ||
2288 | if (event->mode_final) | |
2289 | break; | |
915bf0f6 | 2290 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2291 | mode = strtol(mode_str, &endptr, 8); |
2292 | if (endptr[0] != '\0') { | |
9f6445e3 | 2293 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2294 | break; |
2295 | } | |
2296 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2297 | event->mode_final = true; | |
2298 | event->mode_set = true; | |
2299 | event->mode = mode; | |
9f6445e3 | 2300 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2301 | event->mode, |
915bf0f6 | 2302 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2303 | rule->rule.filename_line); |
912541b0 KS |
2304 | break; |
2305 | } | |
2306 | case TK_A_OWNER_ID: | |
2307 | if (event->owner_final) | |
2308 | break; | |
2309 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2310 | event->owner_final = true; | |
1edefa4f | 2311 | event->owner_set = true; |
912541b0 | 2312 | event->uid = cur->key.uid; |
9f6445e3 | 2313 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2314 | event->uid, |
915bf0f6 | 2315 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2316 | rule->rule.filename_line); |
912541b0 KS |
2317 | break; |
2318 | case TK_A_GROUP_ID: | |
2319 | if (event->group_final) | |
2320 | break; | |
2321 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2322 | event->group_final = true; | |
1edefa4f | 2323 | event->group_set = true; |
912541b0 | 2324 | event->gid = cur->key.gid; |
9f6445e3 | 2325 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2326 | event->gid, |
915bf0f6 | 2327 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2328 | rule->rule.filename_line); |
912541b0 KS |
2329 | break; |
2330 | case TK_A_MODE_ID: | |
2331 | if (event->mode_final) | |
2332 | break; | |
2333 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2334 | event->mode_final = true; | |
2335 | event->mode_set = true; | |
2336 | event->mode = cur->key.mode; | |
9f6445e3 | 2337 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2338 | event->mode, |
915bf0f6 | 2339 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2340 | rule->rule.filename_line); |
912541b0 | 2341 | break; |
c26547d6 KS |
2342 | case TK_A_SECLABEL: { |
2343 | const char *name, *label; | |
2344 | ||
2345 | name = rules_str(rules, cur->key.attr_off); | |
2346 | label = rules_str(rules, cur->key.value_off); | |
2347 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2348 | udev_list_cleanup(&event->seclabel_list); | |
2349 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2350 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2351 | name, label, |
2352 | rules_str(rules, rule->rule.filename_off), | |
2353 | rule->rule.filename_line); | |
2354 | break; | |
2355 | } | |
912541b0 | 2356 | case TK_A_ENV: { |
915bf0f6 KS |
2357 | const char *name = rules_str(rules, cur->key.attr_off); |
2358 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2359 | char value_new[UTIL_NAME_SIZE]; |
2360 | const char *value_old = NULL; | |
912541b0 | 2361 | |
07845c14 KS |
2362 | if (value[0] == '\0') { |
2363 | if (cur->key.op == OP_ADD) | |
2364 | break; | |
912541b0 | 2365 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2366 | break; |
912541b0 | 2367 | } |
07845c14 KS |
2368 | |
2369 | if (cur->key.op == OP_ADD) | |
2370 | value_old = udev_device_get_property_value(event->dev, name); | |
2371 | if (value_old) { | |
2372 | char temp[UTIL_NAME_SIZE]; | |
2373 | ||
2374 | /* append value separated by space */ | |
2375 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2376 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2377 | } else |
2378 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2379 | ||
df546eb5 | 2380 | udev_device_add_property(event->dev, name, value_new); |
912541b0 KS |
2381 | break; |
2382 | } | |
2383 | case TK_A_TAG: { | |
2384 | char tag[UTIL_PATH_SIZE]; | |
2385 | const char *p; | |
2386 | ||
915bf0f6 | 2387 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2388 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2389 | udev_device_cleanup_tags_list(event->dev); | |
2390 | for (p = tag; *p != '\0'; p++) { | |
2391 | if ((*p >= 'a' && *p <= 'z') || | |
2392 | (*p >= 'A' && *p <= 'Z') || | |
2393 | (*p >= '0' && *p <= '9') || | |
2394 | *p == '-' || *p == '_') | |
2395 | continue; | |
9f6445e3 | 2396 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2397 | break; |
2398 | } | |
8e3ba377 DH |
2399 | if (cur->key.op == OP_REMOVE) |
2400 | udev_device_remove_tag(event->dev, tag); | |
2401 | else | |
2402 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2403 | break; |
2404 | } | |
2405 | case TK_A_NAME: { | |
915bf0f6 | 2406 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2407 | |
912541b0 KS |
2408 | char name_str[UTIL_PATH_SIZE]; |
2409 | int count; | |
2410 | ||
2411 | if (event->name_final) | |
2412 | break; | |
2413 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2414 | event->name_final = true; | |
2415 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2416 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2417 | count = util_replace_chars(name_str, "/"); | |
2418 | if (count > 0) | |
9f6445e3 | 2419 | log_debug("%i character(s) replaced", count); |
912541b0 | 2420 | } |
6ada823a | 2421 | if (major(udev_device_get_devnum(event->dev)) && |
4cb72937 | 2422 | (!streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/")))) { |
6ada823a KS |
2423 | log_error("NAME=\"%s\" ignored, kernel device nodes " |
2424 | "can not be renamed; please fix it in %s:%u\n", name, | |
915bf0f6 | 2425 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
6ada823a | 2426 | break; |
0ecfcbd4 | 2427 | } |
2fc09a9c | 2428 | free_and_strdup(&event->name, name_str); |
9f6445e3 | 2429 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2430 | event->name, |
915bf0f6 | 2431 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2432 | rule->rule.filename_line); |
912541b0 KS |
2433 | break; |
2434 | } | |
2435 | case TK_A_DEVLINK: { | |
2436 | char temp[UTIL_PATH_SIZE]; | |
2437 | char filename[UTIL_PATH_SIZE]; | |
2438 | char *pos, *next; | |
2439 | int count = 0; | |
2440 | ||
2441 | if (event->devlink_final) | |
2442 | break; | |
2443 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2444 | break; | |
2445 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2446 | event->devlink_final = true; | |
2447 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2448 | udev_device_cleanup_devlinks_list(event->dev); | |
2449 | ||
2450 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2451 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2452 | if (esc == ESCAPE_UNSET) |
2453 | count = util_replace_chars(temp, "/ "); | |
2454 | else if (esc == ESCAPE_REPLACE) | |
2455 | count = util_replace_chars(temp, "/"); | |
2456 | if (count > 0) | |
9f6445e3 | 2457 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2458 | pos = temp; |
2459 | while (isspace(pos[0])) | |
2460 | pos++; | |
2461 | next = strchr(pos, ' '); | |
2462 | while (next != NULL) { | |
2463 | next[0] = '\0'; | |
9f6445e3 | 2464 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2465 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2466 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2467 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2468 | while (isspace(next[1])) |
2469 | next++; | |
2470 | pos = &next[1]; | |
2471 | next = strchr(pos, ' '); | |
2472 | } | |
2473 | if (pos[0] != '\0') { | |
9f6445e3 | 2474 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2475 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2476 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2477 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2478 | } |
2479 | break; | |
2480 | } | |
2481 | case TK_A_ATTR: { | |
915bf0f6 | 2482 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2483 | char attr[UTIL_PATH_SIZE]; |
2484 | char value[UTIL_NAME_SIZE]; | |
2485 | FILE *f; | |
2486 | ||
2487 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2488 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2489 | attr_subst_subdir(attr, sizeof(attr)); |
2490 | ||
915bf0f6 | 2491 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2492 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2493 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2494 | rule->rule.filename_line); |
47ef94ac | 2495 | f = fopen(attr, "we"); |
912541b0 KS |
2496 | if (f != NULL) { |
2497 | if (fprintf(f, "%s", value) <= 0) | |
56f64d95 | 2498 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); |
912541b0 KS |
2499 | fclose(f); |
2500 | } else { | |
56f64d95 | 2501 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
912541b0 KS |
2502 | } |
2503 | break; | |
2504 | } | |
f4cf2e5b KS |
2505 | case TK_A_SYSCTL: { |
2506 | char filename[UTIL_PATH_SIZE]; | |
2507 | char value[UTIL_NAME_SIZE]; | |
2508 | int r; | |
2509 | ||
2510 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
2511 | sysctl_normalize(filename); | |
2512 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); | |
2513 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, | |
2514 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2515 | r = sysctl_write(filename, value); | |
2516 | if (r < 0) | |
2517 | log_error("error writing SYSCTL{%s}='%s': %s", filename, value, strerror(-r)); | |
2518 | break; | |
2519 | } | |
83cd6b75 KS |
2520 | case TK_A_RUN_BUILTIN: |
2521 | case TK_A_RUN_PROGRAM: { | |
2522 | struct udev_list_entry *entry; | |
2523 | ||
912541b0 KS |
2524 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2525 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2526 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2527 | rules_str(rules, cur->key.value_off), |
2528 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2529 | rule->rule.filename_line); |
915bf0f6 | 2530 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2531 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2532 | break; |
2533 | } | |
2534 | case TK_A_GOTO: | |
2535 | if (cur->key.rule_goto == 0) | |
2536 | break; | |
2537 | cur = &rules->tokens[cur->key.rule_goto]; | |
2538 | continue; | |
2539 | case TK_END: | |
2540 | return 0; | |
2541 | ||
2542 | case TK_M_PARENTS_MIN: | |
2543 | case TK_M_PARENTS_MAX: | |
2544 | case TK_M_MAX: | |
2545 | case TK_UNSET: | |
9f6445e3 | 2546 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2547 | goto nomatch; |
2548 | } | |
2549 | ||
2550 | cur++; | |
2551 | continue; | |
2552 | nomatch: | |
2553 | /* fast-forward to next rule */ | |
2554 | cur = rule + rule->rule.token_count; | |
912541b0 | 2555 | } |
6880b25d | 2556 | } |
761dfddc | 2557 | |
9ec6e95b | 2558 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2559 | struct token *cur; |
2560 | struct token *rule; | |
2561 | uid_t uid = 0; | |
2562 | gid_t gid = 0; | |
2563 | mode_t mode = 0; | |
84b6ad70 TG |
2564 | _cleanup_strv_free_ char **tags = NULL; |
2565 | char **t; | |
2566 | FILE *f = NULL; | |
2567 | _cleanup_free_ char *path = NULL; | |
2568 | int r = 0; | |
912541b0 KS |
2569 | |
2570 | if (rules->tokens == NULL) | |
84b6ad70 | 2571 | return 0; |
912541b0 KS |
2572 | |
2573 | cur = &rules->tokens[0]; | |
2574 | rule = cur; | |
2575 | for (;;) { | |
2576 | switch (cur->type) { | |
2577 | case TK_RULE: | |
2578 | /* current rule */ | |
2579 | rule = cur; | |
2580 | ||
2581 | /* skip rules without a static_node tag */ | |
2582 | if (!rule->rule.has_static_node) | |
2583 | goto next; | |
2584 | ||
2585 | uid = 0; | |
2586 | gid = 0; | |
2587 | mode = 0; | |
97b11eed | 2588 | tags = strv_free(tags); |
912541b0 KS |
2589 | break; |
2590 | case TK_A_OWNER_ID: | |
2591 | uid = cur->key.uid; | |
2592 | break; | |
2593 | case TK_A_GROUP_ID: | |
2594 | gid = cur->key.gid; | |
2595 | break; | |
2596 | case TK_A_MODE_ID: | |
2597 | mode = cur->key.mode; | |
84b6ad70 TG |
2598 | break; |
2599 | case TK_A_TAG: | |
2600 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2601 | if (r < 0) | |
2602 | goto finish; | |
2603 | ||
912541b0 KS |
2604 | break; |
2605 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2606 | char device_node[UTIL_PATH_SIZE]; |
2607 | char tags_dir[UTIL_PATH_SIZE]; | |
2608 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2609 | struct stat stats; |
2610 | ||
2611 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2612 | |
84b6ad70 | 2613 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2614 | goto next; |
d6f116a7 | 2615 | |
84b6ad70 | 2616 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2617 | if (stat(device_node, &stats) != 0) |
2618 | break; | |
2619 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2620 | break; | |
84b6ad70 | 2621 | |
d6f116a7 | 2622 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2623 | if (tags) { |
84b6ad70 TG |
2624 | STRV_FOREACH(t, tags) { |
2625 | _cleanup_free_ char *unescaped_filename = NULL; | |
2626 | ||
2627 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2628 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2629 | if (r < 0) |
2630 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2631 | |
2632 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2633 | ||
2634 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2635 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2636 | if (r < 0 && errno != EEXIST) |
2637 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2638 | tag_symlink, device_node); | |
2639 | else | |
84b6ad70 TG |
2640 | r = 0; |
2641 | } | |
2642 | } | |
2643 | ||
15a72200 TG |
2644 | /* don't touch the permissions if only the tags were set */ |
2645 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2646 | break; |
2647 | ||
912541b0 KS |
2648 | if (mode == 0) { |
2649 | if (gid > 0) | |
2650 | mode = 0660; | |
2651 | else | |
2652 | mode = 0600; | |
2653 | } | |
2654 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2655 | r = chmod(device_node, mode); |
2656 | if (r < 0) { | |
9f6445e3 | 2657 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2658 | return -errno; |
2659 | } else | |
9f6445e3 | 2660 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2661 | } |
2662 | ||
2663 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2664 | r = chown(device_node, uid, gid); |
2665 | if (r < 0) { | |
9f6445e3 | 2666 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2667 | return -errno; |
2668 | } else | |
9f6445e3 | 2669 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2670 | } |
2671 | ||
84b6ad70 | 2672 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2673 | break; |
2674 | } | |
2675 | case TK_END: | |
84b6ad70 | 2676 | goto finish; |
912541b0 KS |
2677 | } |
2678 | ||
2679 | cur++; | |
2680 | continue; | |
761dfddc | 2681 | next: |
912541b0 KS |
2682 | /* fast-forward to next rule */ |
2683 | cur = rule + rule->rule.token_count; | |
2684 | continue; | |
2685 | } | |
84b6ad70 TG |
2686 | |
2687 | finish: | |
2688 | if (f) { | |
2689 | fflush(f); | |
2690 | fchmod(fileno(f), 0644); | |
2691 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
2692 | r = -errno; | |
2693 | unlink("/run/udev/static_node-tags"); | |
2694 | unlink(path); | |
2695 | } | |
2696 | fclose(f); | |
2697 | } | |
2698 | ||
2699 | return r; | |
761dfddc | 2700 | } |