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e7145211 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
2232cac8 | 2 | /* |
1298001e | 3 | * Copyright (C) 2003-2012 Kay Sievers <kay@vrfy.org> |
2232cac8 | 4 | * |
55e9959b KS |
5 | * This program is free software: you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation, either version 2 of the License, or | |
8 | * (at your option) any later version. | |
3d6d12c6 | 9 | * |
55e9959b KS |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
2232cac8 | 14 | * |
55e9959b KS |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
2232cac8 GKH |
17 | */ |
18 | ||
2232cac8 | 19 | #include <ctype.h> |
4f5dd394 LP |
20 | #include <errno.h> |
21 | #include <fcntl.h> | |
cea61f5c | 22 | #include <fnmatch.h> |
4f5dd394 LP |
23 | #include <limits.h> |
24 | #include <stdbool.h> | |
25 | #include <stddef.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
959e8b5d | 29 | #include <time.h> |
4f5dd394 | 30 | #include <unistd.h> |
2232cac8 | 31 | |
b5efdb8a | 32 | #include "alloc-util.h" |
2c21044f | 33 | #include "conf-files.h" |
8fb3f009 | 34 | #include "dirent-util.h" |
4f5dd394 | 35 | #include "escape.h" |
3ffd4af2 | 36 | #include "fd-util.h" |
fdd21be6 | 37 | #include "fs-util.h" |
7d50b32a | 38 | #include "glob-util.h" |
4f5dd394 | 39 | #include "path-util.h" |
88b013b2 | 40 | #include "proc-cmdline.h" |
8fcde012 | 41 | #include "stat-util.h" |
f4850a1d | 42 | #include "stdio-util.h" |
915bf0f6 | 43 | #include "strbuf.h" |
07630cea | 44 | #include "string-util.h" |
84b6ad70 | 45 | #include "strv.h" |
f4cf2e5b | 46 | #include "sysctl-util.h" |
4f5dd394 | 47 | #include "udev.h" |
b1d4f8e1 | 48 | #include "user-util.h" |
07630cea | 49 | #include "util.h" |
2232cac8 | 50 | |
a1525d17 | 51 | #define PREALLOC_TOKEN 2048 |
c7521974 | 52 | |
4052400f | 53 | struct uid_gid { |
912541b0 KS |
54 | unsigned int name_off; |
55 | union { | |
a1525d17 KS |
56 | uid_t uid; |
57 | gid_t gid; | |
912541b0 | 58 | }; |
4052400f KS |
59 | }; |
60 | ||
2ad8416d ZJS |
61 | static const char* const rules_dirs[] = { |
62 | "/etc/udev/rules.d", | |
63 | "/run/udev/rules.d", | |
64 | UDEVLIBEXECDIR "/rules.d", | |
4f5dd394 LP |
65 | NULL |
66 | }; | |
2ad8416d | 67 | |
4052400f | 68 | struct udev_rules { |
912541b0 | 69 | struct udev *udev; |
97f2d76d | 70 | usec_t dirs_ts_usec; |
912541b0 KS |
71 | int resolve_names; |
72 | ||
73 | /* every key in the rules file becomes a token */ | |
74 | struct token *tokens; | |
75 | unsigned int token_cur; | |
76 | unsigned int token_max; | |
77 | ||
ab06eef8 | 78 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 79 | struct strbuf *strbuf; |
912541b0 KS |
80 | |
81 | /* during rule parsing, uid/gid lookup results are cached */ | |
82 | struct uid_gid *uids; | |
83 | unsigned int uids_cur; | |
84 | unsigned int uids_max; | |
85 | struct uid_gid *gids; | |
86 | unsigned int gids_cur; | |
87 | unsigned int gids_max; | |
4052400f KS |
88 | }; |
89 | ||
915bf0f6 KS |
90 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
91 | return rules->strbuf->buf + off; | |
92 | } | |
93 | ||
94 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
95 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
96 | } | |
97 | ||
8e3ba377 | 98 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 99 | enum operation_type { |
912541b0 | 100 | OP_UNSET, |
b0f7409f | 101 | |
912541b0 KS |
102 | OP_MATCH, |
103 | OP_NOMATCH, | |
104 | OP_MATCH_MAX, | |
b0f7409f | 105 | |
912541b0 | 106 | OP_ADD, |
8e3ba377 | 107 | OP_REMOVE, |
912541b0 KS |
108 | OP_ASSIGN, |
109 | OP_ASSIGN_FINAL, | |
c7521974 KS |
110 | }; |
111 | ||
ac218d9c | 112 | enum string_glob_type { |
912541b0 | 113 | GL_UNSET, |
a1525d17 | 114 | GL_PLAIN, /* no special chars */ |
912541b0 | 115 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
116 | GL_SPLIT, /* multi-value A|B */ |
117 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
118 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
119 | }; |
120 | ||
32028733 | 121 | enum string_subst_type { |
912541b0 KS |
122 | SB_UNSET, |
123 | SB_NONE, | |
124 | SB_FORMAT, | |
125 | SB_SUBSYS, | |
32028733 KS |
126 | }; |
127 | ||
154a7b84 | 128 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 129 | enum token_type { |
912541b0 KS |
130 | TK_UNSET, |
131 | TK_RULE, | |
132 | ||
a1525d17 KS |
133 | TK_M_ACTION, /* val */ |
134 | TK_M_DEVPATH, /* val */ | |
135 | TK_M_KERNEL, /* val */ | |
136 | TK_M_DEVLINK, /* val */ | |
137 | TK_M_NAME, /* val */ | |
138 | TK_M_ENV, /* val, attr */ | |
139 | TK_M_TAG, /* val */ | |
140 | TK_M_SUBSYSTEM, /* val */ | |
141 | TK_M_DRIVER, /* val */ | |
142 | TK_M_WAITFOR, /* val */ | |
143 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 144 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
145 | |
146 | TK_M_PARENTS_MIN, | |
a1525d17 | 147 | TK_M_KERNELS, /* val */ |
912541b0 | 148 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
149 | TK_M_DRIVERS, /* val */ |
150 | TK_M_ATTRS, /* val, attr */ | |
151 | TK_M_TAGS, /* val */ | |
912541b0 KS |
152 | TK_M_PARENTS_MAX, |
153 | ||
a1525d17 | 154 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
155 | TK_M_PROGRAM, /* val */ |
156 | TK_M_IMPORT_FILE, /* val */ | |
157 | TK_M_IMPORT_PROG, /* val */ | |
158 | TK_M_IMPORT_BUILTIN, /* val */ | |
159 | TK_M_IMPORT_DB, /* val */ | |
160 | TK_M_IMPORT_CMDLINE, /* val */ | |
161 | TK_M_IMPORT_PARENT, /* val */ | |
162 | TK_M_RESULT, /* val */ | |
912541b0 KS |
163 | TK_M_MAX, |
164 | ||
165 | TK_A_STRING_ESCAPE_NONE, | |
166 | TK_A_STRING_ESCAPE_REPLACE, | |
167 | TK_A_DB_PERSIST, | |
a1525d17 KS |
168 | TK_A_INOTIFY_WATCH, /* int */ |
169 | TK_A_DEVLINK_PRIO, /* int */ | |
170 | TK_A_OWNER, /* val */ | |
171 | TK_A_GROUP, /* val */ | |
172 | TK_A_MODE, /* val */ | |
173 | TK_A_OWNER_ID, /* uid_t */ | |
174 | TK_A_GROUP_ID, /* gid_t */ | |
175 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 176 | TK_A_TAG, /* val */ |
a1525d17 | 177 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 178 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 179 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
180 | TK_A_NAME, /* val */ |
181 | TK_A_DEVLINK, /* val */ | |
182 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 183 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
184 | TK_A_RUN_BUILTIN, /* val, bool */ |
185 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 186 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
187 | |
188 | TK_END, | |
c7521974 KS |
189 | }; |
190 | ||
3f3aa9f5 | 191 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 192 | struct token { |
912541b0 KS |
193 | union { |
194 | unsigned char type; /* same in rule and key */ | |
195 | struct { | |
196 | enum token_type type:8; | |
197 | bool can_set_name:1; | |
198 | bool has_static_node:1; | |
199 | unsigned int unused:6; | |
200 | unsigned short token_count; | |
201 | unsigned int label_off; | |
202 | unsigned short filename_off; | |
203 | unsigned short filename_line; | |
204 | } rule; | |
205 | struct { | |
206 | enum token_type type:8; | |
207 | enum operation_type op:8; | |
208 | enum string_glob_type glob:8; | |
209 | enum string_subst_type subst:4; | |
210 | enum string_subst_type attrsubst:4; | |
211 | unsigned int value_off; | |
212 | union { | |
213 | unsigned int attr_off; | |
912541b0 KS |
214 | unsigned int rule_goto; |
215 | mode_t mode; | |
216 | uid_t uid; | |
217 | gid_t gid; | |
218 | int devlink_prio; | |
912541b0 KS |
219 | int watch; |
220 | enum udev_builtin_cmd builtin_cmd; | |
221 | }; | |
222 | } key; | |
223 | }; | |
4052400f KS |
224 | }; |
225 | ||
912541b0 | 226 | #define MAX_TK 64 |
4052400f | 227 | struct rule_tmp { |
912541b0 KS |
228 | struct udev_rules *rules; |
229 | struct token rule; | |
230 | struct token token[MAX_TK]; | |
231 | unsigned int token_cur; | |
4052400f KS |
232 | }; |
233 | ||
baa30fbc | 234 | #ifdef DEBUG |
9ec6e95b | 235 | static const char *operation_str(enum operation_type type) { |
912541b0 | 236 | static const char *operation_strs[] = { |
a1525d17 KS |
237 | [OP_UNSET] = "UNSET", |
238 | [OP_MATCH] = "match", | |
239 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
240 | [OP_MATCH_MAX] = "MATCH_MAX", |
241 | ||
a1525d17 | 242 | [OP_ADD] = "add", |
8e3ba377 | 243 | [OP_REMOVE] = "remove", |
a1525d17 KS |
244 | [OP_ASSIGN] = "assign", |
245 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
246 | } ; |
247 | ||
248 | return operation_strs[type]; | |
5d6a1fa6 | 249 | } |
4052400f | 250 | |
9ec6e95b | 251 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 252 | static const char *string_glob_strs[] = { |
a1525d17 KS |
253 | [GL_UNSET] = "UNSET", |
254 | [GL_PLAIN] = "plain", | |
255 | [GL_GLOB] = "glob", | |
256 | [GL_SPLIT] = "split", | |
257 | [GL_SPLIT_GLOB] = "split-glob", | |
258 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
259 | }; |
260 | ||
261 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
262 | } |
263 | ||
9ec6e95b | 264 | static const char *token_str(enum token_type type) { |
912541b0 | 265 | static const char *token_strs[] = { |
a1525d17 KS |
266 | [TK_UNSET] = "UNSET", |
267 | [TK_RULE] = "RULE", | |
912541b0 | 268 | |
a1525d17 | 269 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 270 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 271 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 272 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
273 | [TK_M_NAME] = "M NAME", |
274 | [TK_M_ENV] = "M ENV", | |
275 | [TK_M_TAG] = "M TAG", | |
276 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
277 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 278 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 279 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 280 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 281 | |
a1525d17 | 282 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 283 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 284 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 285 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
286 | [TK_M_ATTRS] = "M ATTRS", |
287 | [TK_M_TAGS] = "M TAGS", | |
288 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 289 | |
a1525d17 | 290 | [TK_M_TEST] = "M TEST", |
912541b0 | 291 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
292 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
293 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
294 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
295 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
296 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
297 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
298 | [TK_M_RESULT] = "M RESULT", | |
299 | [TK_M_MAX] = "M MAX", | |
300 | ||
301 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
302 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
303 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
304 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
305 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
306 | [TK_A_OWNER] = "A OWNER", | |
307 | [TK_A_GROUP] = "A GROUP", | |
308 | [TK_A_MODE] = "A MODE", | |
309 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
310 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
311 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 312 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 313 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
314 | [TK_A_ENV] = "A ENV", |
315 | [TK_A_TAG] = "A ENV", | |
316 | [TK_A_NAME] = "A NAME", | |
912541b0 | 317 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 318 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 319 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
320 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
321 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 322 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 323 | |
a1525d17 | 324 | [TK_END] = "END", |
912541b0 KS |
325 | }; |
326 | ||
327 | return token_strs[type]; | |
5d6a1fa6 | 328 | } |
c7521974 | 329 | |
9ec6e95b | 330 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
331 | enum token_type type = token->type; |
332 | enum operation_type op = token->key.op; | |
333 | enum string_glob_type glob = token->key.glob; | |
fa394301 LR |
334 | const char *value = rules_str(rules, token->key.value_off); |
335 | const char *attr = &rules->strbuf->buf[token->key.attr_off]; | |
912541b0 KS |
336 | |
337 | switch (type) { | |
338 | case TK_RULE: | |
339 | { | |
340 | const char *tks_ptr = (char *)rules->tokens; | |
341 | const char *tk_ptr = (char *)token; | |
342 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
343 | ||
9f6445e3 | 344 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
fa394301 | 345 | &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line, |
baa30fbc | 346 | idx, token->rule.token_count, |
fa394301 | 347 | &rules->strbuf->buf[token->rule.label_off]); |
912541b0 KS |
348 | break; |
349 | } | |
350 | case TK_M_ACTION: | |
351 | case TK_M_DEVPATH: | |
352 | case TK_M_KERNEL: | |
353 | case TK_M_SUBSYSTEM: | |
354 | case TK_M_DRIVER: | |
355 | case TK_M_WAITFOR: | |
356 | case TK_M_DEVLINK: | |
357 | case TK_M_NAME: | |
358 | case TK_M_KERNELS: | |
359 | case TK_M_SUBSYSTEMS: | |
360 | case TK_M_DRIVERS: | |
361 | case TK_M_TAGS: | |
362 | case TK_M_PROGRAM: | |
363 | case TK_M_IMPORT_FILE: | |
364 | case TK_M_IMPORT_PROG: | |
365 | case TK_M_IMPORT_DB: | |
366 | case TK_M_IMPORT_CMDLINE: | |
367 | case TK_M_IMPORT_PARENT: | |
368 | case TK_M_RESULT: | |
369 | case TK_A_NAME: | |
370 | case TK_A_DEVLINK: | |
371 | case TK_A_OWNER: | |
372 | case TK_A_GROUP: | |
373 | case TK_A_MODE: | |
83cd6b75 KS |
374 | case TK_A_RUN_BUILTIN: |
375 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 376 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 377 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
378 | break; |
379 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 380 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
381 | break; |
382 | case TK_M_ATTR: | |
f4cf2e5b | 383 | case TK_M_SYSCTL: |
912541b0 KS |
384 | case TK_M_ATTRS: |
385 | case TK_M_ENV: | |
386 | case TK_A_ATTR: | |
f4cf2e5b | 387 | case TK_A_SYSCTL: |
912541b0 | 388 | case TK_A_ENV: |
9f6445e3 | 389 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 390 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
391 | break; |
392 | case TK_M_TAG: | |
393 | case TK_A_TAG: | |
9f6445e3 | 394 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
395 | break; |
396 | case TK_A_STRING_ESCAPE_NONE: | |
397 | case TK_A_STRING_ESCAPE_REPLACE: | |
398 | case TK_A_DB_PERSIST: | |
9f6445e3 | 399 | log_debug("%s", token_str(type)); |
912541b0 KS |
400 | break; |
401 | case TK_M_TEST: | |
9f6445e3 | 402 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 403 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
404 | break; |
405 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 406 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
407 | break; |
408 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 409 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
410 | break; |
411 | case TK_A_OWNER_ID: | |
9f6445e3 | 412 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
413 | break; |
414 | case TK_A_GROUP_ID: | |
9f6445e3 | 415 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
416 | break; |
417 | case TK_A_MODE_ID: | |
9f6445e3 | 418 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
419 | break; |
420 | case TK_A_STATIC_NODE: | |
9f6445e3 | 421 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 422 | break; |
c26547d6 | 423 | case TK_A_SECLABEL: |
9f6445e3 | 424 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 425 | break; |
912541b0 | 426 | case TK_A_GOTO: |
9f6445e3 | 427 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
428 | break; |
429 | case TK_END: | |
9f6445e3 | 430 | log_debug("* %s", token_str(type)); |
912541b0 KS |
431 | break; |
432 | case TK_M_PARENTS_MIN: | |
433 | case TK_M_PARENTS_MAX: | |
434 | case TK_M_MAX: | |
435 | case TK_UNSET: | |
9f6445e3 | 436 | log_debug("unknown type %u", type); |
912541b0 KS |
437 | break; |
438 | } | |
4052400f | 439 | } |
154a7b84 | 440 | |
9ec6e95b | 441 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
442 | unsigned int i; |
443 | ||
fa394301 | 444 | log_debug("dumping %u (%zu bytes) tokens, %zu (%zu bytes) strings", |
baa30fbc KS |
445 | rules->token_cur, |
446 | rules->token_cur * sizeof(struct token), | |
fa394301 LR |
447 | rules->strbuf->nodes_count, |
448 | rules->strbuf->len); | |
f168c273 | 449 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 450 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
451 | } |
452 | #else | |
4052400f KS |
453 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
454 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 455 | #endif /* DEBUG */ |
c7521974 | 456 | |
9ec6e95b | 457 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
458 | /* grow buffer if needed */ |
459 | if (rules->token_cur+1 >= rules->token_max) { | |
460 | struct token *tokens; | |
461 | unsigned int add; | |
462 | ||
463 | /* double the buffer size */ | |
464 | add = rules->token_max; | |
465 | if (add < 8) | |
466 | add = 8; | |
467 | ||
62d74c78 | 468 | tokens = reallocarray(rules->tokens, rules->token_max + add, sizeof(struct token)); |
912541b0 KS |
469 | if (tokens == NULL) |
470 | return -1; | |
912541b0 KS |
471 | rules->tokens = tokens; |
472 | rules->token_max += add; | |
473 | } | |
474 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
475 | rules->token_cur++; | |
476 | return 0; | |
c7521974 | 477 | } |
a27cd06c | 478 | |
2da03cbf ZJS |
479 | static void log_unknown_owner(int error, const char *entity, const char *owner) { |
480 | if (IN_SET(abs(error), ENOENT, ESRCH)) | |
481 | log_error("Specified %s '%s' unknown", entity, owner); | |
482 | else | |
483 | log_error_errno(error, "Error resolving %s '%s': %m", entity, owner); | |
484 | } | |
485 | ||
9ec6e95b | 486 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 487 | unsigned int i; |
23bf8dd7 | 488 | uid_t uid = 0; |
912541b0 | 489 | unsigned int off; |
23bf8dd7 | 490 | int r; |
912541b0 KS |
491 | |
492 | /* lookup, if we know it already */ | |
493 | for (i = 0; i < rules->uids_cur; i++) { | |
494 | off = rules->uids[i].name_off; | |
915bf0f6 | 495 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 496 | uid = rules->uids[i].uid; |
912541b0 KS |
497 | return uid; |
498 | } | |
499 | } | |
23bf8dd7 | 500 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
2da03cbf ZJS |
501 | if (r < 0) |
502 | log_unknown_owner(r, "user", owner); | |
912541b0 KS |
503 | |
504 | /* grow buffer if needed */ | |
505 | if (rules->uids_cur+1 >= rules->uids_max) { | |
506 | struct uid_gid *uids; | |
507 | unsigned int add; | |
508 | ||
509 | /* double the buffer size */ | |
510 | add = rules->uids_max; | |
511 | if (add < 1) | |
512 | add = 8; | |
513 | ||
62d74c78 | 514 | uids = reallocarray(rules->uids, rules->uids_max + add, sizeof(struct uid_gid)); |
912541b0 KS |
515 | if (uids == NULL) |
516 | return uid; | |
912541b0 KS |
517 | rules->uids = uids; |
518 | rules->uids_max += add; | |
519 | } | |
520 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 521 | off = rules_add_string(rules, owner); |
912541b0 KS |
522 | if (off <= 0) |
523 | return uid; | |
524 | rules->uids[rules->uids_cur].name_off = off; | |
525 | rules->uids_cur++; | |
526 | return uid; | |
154a7b84 KS |
527 | } |
528 | ||
9ec6e95b | 529 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 530 | unsigned int i; |
23bf8dd7 | 531 | gid_t gid = 0; |
912541b0 | 532 | unsigned int off; |
23bf8dd7 | 533 | int r; |
912541b0 KS |
534 | |
535 | /* lookup, if we know it already */ | |
536 | for (i = 0; i < rules->gids_cur; i++) { | |
537 | off = rules->gids[i].name_off; | |
915bf0f6 | 538 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 539 | gid = rules->gids[i].gid; |
912541b0 KS |
540 | return gid; |
541 | } | |
542 | } | |
23bf8dd7 | 543 | r = get_group_creds(&group, &gid); |
2da03cbf ZJS |
544 | if (r < 0) |
545 | log_unknown_owner(r, "group", group); | |
912541b0 KS |
546 | |
547 | /* grow buffer if needed */ | |
548 | if (rules->gids_cur+1 >= rules->gids_max) { | |
549 | struct uid_gid *gids; | |
550 | unsigned int add; | |
551 | ||
552 | /* double the buffer size */ | |
553 | add = rules->gids_max; | |
554 | if (add < 1) | |
555 | add = 8; | |
556 | ||
62d74c78 | 557 | gids = reallocarray(rules->gids, rules->gids_max + add, sizeof(struct uid_gid)); |
912541b0 KS |
558 | if (gids == NULL) |
559 | return gid; | |
912541b0 KS |
560 | rules->gids = gids; |
561 | rules->gids_max += add; | |
562 | } | |
563 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 564 | off = rules_add_string(rules, group); |
912541b0 KS |
565 | if (off <= 0) |
566 | return gid; | |
567 | rules->gids[rules->gids_cur].name_off = off; | |
568 | rules->gids_cur++; | |
569 | return gid; | |
154a7b84 KS |
570 | } |
571 | ||
9ec6e95b | 572 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
573 | char *key; |
574 | char *val; | |
575 | size_t len; | |
576 | ||
577 | /* find key */ | |
578 | key = line; | |
579 | while (isspace(key[0])) | |
580 | key++; | |
581 | ||
582 | /* comment or empty line */ | |
4c701096 | 583 | if (IN_SET(key[0], '#', '\0')) |
912541b0 KS |
584 | return -1; |
585 | ||
586 | /* split key/value */ | |
587 | val = strchr(key, '='); | |
588 | if (val == NULL) | |
589 | return -1; | |
590 | val[0] = '\0'; | |
591 | val++; | |
592 | ||
593 | /* find value */ | |
594 | while (isspace(val[0])) | |
595 | val++; | |
596 | ||
597 | /* terminate key */ | |
598 | len = strlen(key); | |
599 | if (len == 0) | |
600 | return -1; | |
601 | while (isspace(key[len-1])) | |
602 | len--; | |
603 | key[len] = '\0'; | |
604 | ||
605 | /* terminate value */ | |
606 | len = strlen(val); | |
607 | if (len == 0) | |
608 | return -1; | |
609 | while (isspace(val[len-1])) | |
610 | len--; | |
611 | val[len] = '\0'; | |
612 | ||
613 | if (len == 0) | |
614 | return -1; | |
615 | ||
616 | /* unquote */ | |
4c701096 | 617 | if (IN_SET(val[0], '"', '\'')) { |
cd05bb8b | 618 | if (len == 1 || val[len-1] != val[0]) { |
9f6445e3 | 619 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
620 | return -1; |
621 | } | |
622 | val[len-1] = '\0'; | |
623 | val++; | |
624 | } | |
625 | ||
df546eb5 | 626 | udev_device_add_property(dev, key, val); |
0aa5b4d1 | 627 | |
912541b0 | 628 | return 0; |
be4bedd1 KS |
629 | } |
630 | ||
9ec6e95b | 631 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
632 | FILE *f; |
633 | char line[UTIL_LINE_SIZE]; | |
634 | ||
47ef94ac | 635 | f = fopen(filename, "re"); |
912541b0 KS |
636 | if (f == NULL) |
637 | return -1; | |
638 | while (fgets(line, sizeof(line), f) != NULL) | |
639 | import_property_from_string(dev, line); | |
640 | fclose(f); | |
641 | return 0; | |
bd0ed2ff KS |
642 | } |
643 | ||
dd5eddd2 KS |
644 | static int import_program_into_properties(struct udev_event *event, |
645 | usec_t timeout_usec, | |
67117413 | 646 | usec_t timeout_warn_usec, |
8314de1d | 647 | const char *program) { |
912541b0 KS |
648 | char result[UTIL_LINE_SIZE]; |
649 | char *line; | |
650 | int err; | |
651 | ||
bbf35206 | 652 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)); |
912541b0 KS |
653 | if (err < 0) |
654 | return err; | |
655 | ||
656 | line = result; | |
657 | while (line != NULL) { | |
658 | char *pos; | |
659 | ||
660 | pos = strchr(line, '\n'); | |
661 | if (pos != NULL) { | |
662 | pos[0] = '\0'; | |
663 | pos = &pos[1]; | |
664 | } | |
bbf35206 | 665 | import_property_from_string(event->dev, line); |
912541b0 KS |
666 | line = pos; |
667 | } | |
668 | return 0; | |
319c6700 KS |
669 | } |
670 | ||
9ec6e95b | 671 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
672 | struct udev_device *dev_parent; |
673 | struct udev_list_entry *list_entry; | |
674 | ||
3b64e4d4 TG |
675 | assert(dev); |
676 | assert(filter); | |
677 | ||
912541b0 KS |
678 | dev_parent = udev_device_get_parent(dev); |
679 | if (dev_parent == NULL) | |
680 | return -1; | |
681 | ||
912541b0 KS |
682 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
683 | const char *key = udev_list_entry_get_name(list_entry); | |
684 | const char *val = udev_list_entry_get_value(list_entry); | |
685 | ||
ece174c5 | 686 | if (fnmatch(filter, key, 0) == 0) |
df546eb5 | 687 | udev_device_add_property(dev, key, val); |
912541b0 KS |
688 | } |
689 | return 0; | |
e2ecb34f KS |
690 | } |
691 | ||
f4850a1d ZJS |
692 | static void attr_subst_subdir(char *attr, size_t len) { |
693 | const char *pos, *tail, *path; | |
694 | _cleanup_closedir_ DIR *dir = NULL; | |
695 | struct dirent *dent; | |
696 | ||
697 | pos = strstr(attr, "/*/"); | |
698 | if (!pos) | |
699 | return; | |
700 | ||
701 | tail = pos + 2; | |
702 | path = strndupa(attr, pos - attr + 1); /* include slash at end */ | |
703 | dir = opendir(path); | |
704 | if (dir == NULL) | |
705 | return; | |
706 | ||
8fb3f009 | 707 | FOREACH_DIRENT_ALL(dent, dir, break) |
f4850a1d | 708 | if (dent->d_name[0] != '.') { |
916a8d43 | 709 | char n[strlen(dent->d_name) + strlen(tail) + 1]; |
f4850a1d | 710 | |
916a8d43 ZJS |
711 | strscpyl(n, sizeof n, dent->d_name, tail, NULL); |
712 | if (faccessat(dirfd(dir), n, F_OK, 0) == 0) { | |
f4850a1d ZJS |
713 | strscpyl(attr, len, path, n, NULL); |
714 | break; | |
912541b0 | 715 | } |
912541b0 | 716 | } |
0ea5e96e KS |
717 | } |
718 | ||
9ec6e95b | 719 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
720 | char *linepos; |
721 | char *temp; | |
7e760b79 | 722 | unsigned i, j; |
912541b0 KS |
723 | |
724 | linepos = *line; | |
725 | if (linepos == NULL || linepos[0] == '\0') | |
726 | return -1; | |
727 | ||
728 | /* skip whitespace */ | |
729 | while (isspace(linepos[0]) || linepos[0] == ',') | |
730 | linepos++; | |
731 | ||
732 | /* get the key */ | |
733 | if (linepos[0] == '\0') | |
734 | return -1; | |
735 | *key = linepos; | |
736 | ||
737 | for (;;) { | |
738 | linepos++; | |
739 | if (linepos[0] == '\0') | |
740 | return -1; | |
741 | if (isspace(linepos[0])) | |
742 | break; | |
743 | if (linepos[0] == '=') | |
744 | break; | |
4c701096 | 745 | if (IN_SET(linepos[0], '+', '-', '!', ':')) |
912541b0 KS |
746 | if (linepos[1] == '=') |
747 | break; | |
748 | } | |
749 | ||
750 | /* remember end of key */ | |
751 | temp = linepos; | |
752 | ||
753 | /* skip whitespace after key */ | |
754 | while (isspace(linepos[0])) | |
755 | linepos++; | |
756 | if (linepos[0] == '\0') | |
757 | return -1; | |
758 | ||
759 | /* get operation type */ | |
760 | if (linepos[0] == '=' && linepos[1] == '=') { | |
761 | *op = OP_MATCH; | |
762 | linepos += 2; | |
763 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
764 | *op = OP_NOMATCH; | |
765 | linepos += 2; | |
766 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
767 | *op = OP_ADD; | |
768 | linepos += 2; | |
8e3ba377 DH |
769 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
770 | *op = OP_REMOVE; | |
771 | linepos += 2; | |
912541b0 KS |
772 | } else if (linepos[0] == '=') { |
773 | *op = OP_ASSIGN; | |
774 | linepos++; | |
775 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
776 | *op = OP_ASSIGN_FINAL; | |
777 | linepos += 2; | |
778 | } else | |
779 | return -1; | |
780 | ||
781 | /* terminate key */ | |
782 | temp[0] = '\0'; | |
783 | ||
784 | /* skip whitespace after operator */ | |
785 | while (isspace(linepos[0])) | |
786 | linepos++; | |
787 | if (linepos[0] == '\0') | |
788 | return -1; | |
789 | ||
790 | /* get the value */ | |
791 | if (linepos[0] == '"') | |
792 | linepos++; | |
793 | else | |
794 | return -1; | |
795 | *value = linepos; | |
796 | ||
797 | /* terminate */ | |
7e760b79 FB |
798 | for (i = 0, j = 0; ; i++, j++) { |
799 | ||
800 | if (linepos[i] == '"') | |
801 | break; | |
802 | ||
803 | if (linepos[i] == '\0') | |
804 | return -1; | |
805 | ||
806 | /* double quotes can be escaped */ | |
807 | if (linepos[i] == '\\') | |
808 | if (linepos[i+1] == '"') | |
809 | i++; | |
810 | ||
811 | linepos[j] = linepos[i]; | |
812 | } | |
813 | linepos[j] = '\0'; | |
912541b0 KS |
814 | |
815 | /* move line to next key */ | |
7e760b79 | 816 | *line = linepos + i + 1; |
912541b0 | 817 | return 0; |
6880b25d | 818 | } |
95776dc6 | 819 | |
6880b25d | 820 | /* extract possible KEY{attr} */ |
9ec6e95b | 821 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
822 | char *pos; |
823 | char *attr; | |
824 | ||
825 | attr = strchr(str, '{'); | |
826 | if (attr != NULL) { | |
827 | attr++; | |
828 | pos = strchr(attr, '}'); | |
829 | if (pos == NULL) { | |
25f027c5 | 830 | log_error("Missing closing brace for format"); |
912541b0 KS |
831 | return NULL; |
832 | } | |
833 | pos[0] = '\0'; | |
912541b0 KS |
834 | return attr; |
835 | } | |
836 | return NULL; | |
6880b25d | 837 | } |
95776dc6 | 838 | |
19a8e656 ZJS |
839 | static void rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
840 | enum operation_type op, | |
841 | const char *value, const void *data) { | |
842 | struct token *token = rule_tmp->token + rule_tmp->token_cur; | |
912541b0 KS |
843 | const char *attr = NULL; |
844 | ||
19a8e656 | 845 | assert(rule_tmp->token_cur < ELEMENTSOF(rule_tmp->token)); |
29804cc1 | 846 | memzero(token, sizeof(struct token)); |
912541b0 KS |
847 | |
848 | switch (type) { | |
849 | case TK_M_ACTION: | |
850 | case TK_M_DEVPATH: | |
851 | case TK_M_KERNEL: | |
852 | case TK_M_SUBSYSTEM: | |
853 | case TK_M_DRIVER: | |
854 | case TK_M_WAITFOR: | |
855 | case TK_M_DEVLINK: | |
856 | case TK_M_NAME: | |
857 | case TK_M_KERNELS: | |
858 | case TK_M_SUBSYSTEMS: | |
859 | case TK_M_DRIVERS: | |
860 | case TK_M_TAGS: | |
861 | case TK_M_PROGRAM: | |
862 | case TK_M_IMPORT_FILE: | |
863 | case TK_M_IMPORT_PROG: | |
864 | case TK_M_IMPORT_DB: | |
865 | case TK_M_IMPORT_CMDLINE: | |
866 | case TK_M_IMPORT_PARENT: | |
867 | case TK_M_RESULT: | |
868 | case TK_A_OWNER: | |
869 | case TK_A_GROUP: | |
870 | case TK_A_MODE: | |
8a173387 | 871 | case TK_A_DEVLINK: |
912541b0 KS |
872 | case TK_A_NAME: |
873 | case TK_A_GOTO: | |
874 | case TK_M_TAG: | |
875 | case TK_A_TAG: | |
d6f116a7 | 876 | case TK_A_STATIC_NODE: |
915bf0f6 | 877 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
878 | break; |
879 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 880 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
881 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
882 | break; | |
883 | case TK_M_ENV: | |
884 | case TK_M_ATTR: | |
f4cf2e5b | 885 | case TK_M_SYSCTL: |
912541b0 KS |
886 | case TK_M_ATTRS: |
887 | case TK_A_ATTR: | |
f4cf2e5b | 888 | case TK_A_SYSCTL: |
912541b0 | 889 | case TK_A_ENV: |
c26547d6 | 890 | case TK_A_SECLABEL: |
912541b0 | 891 | attr = data; |
915bf0f6 KS |
892 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
893 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 894 | break; |
912541b0 | 895 | case TK_M_TEST: |
915bf0f6 | 896 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
897 | if (data != NULL) |
898 | token->key.mode = *(mode_t *)data; | |
899 | break; | |
900 | case TK_A_STRING_ESCAPE_NONE: | |
901 | case TK_A_STRING_ESCAPE_REPLACE: | |
902 | case TK_A_DB_PERSIST: | |
903 | break; | |
83cd6b75 | 904 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 905 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 906 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 907 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
908 | break; |
909 | case TK_A_INOTIFY_WATCH: | |
910 | case TK_A_DEVLINK_PRIO: | |
911 | token->key.devlink_prio = *(int *)data; | |
912 | break; | |
913 | case TK_A_OWNER_ID: | |
914 | token->key.uid = *(uid_t *)data; | |
915 | break; | |
916 | case TK_A_GROUP_ID: | |
917 | token->key.gid = *(gid_t *)data; | |
918 | break; | |
919 | case TK_A_MODE_ID: | |
920 | token->key.mode = *(mode_t *)data; | |
921 | break; | |
912541b0 KS |
922 | case TK_RULE: |
923 | case TK_M_PARENTS_MIN: | |
924 | case TK_M_PARENTS_MAX: | |
925 | case TK_M_MAX: | |
926 | case TK_END: | |
927 | case TK_UNSET: | |
19a8e656 | 928 | assert_not_reached("wrong type"); |
912541b0 KS |
929 | } |
930 | ||
931 | if (value != NULL && type < TK_M_MAX) { | |
932 | /* check if we need to split or call fnmatch() while matching rules */ | |
933 | enum string_glob_type glob; | |
934 | int has_split; | |
935 | int has_glob; | |
936 | ||
937 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 938 | has_glob = string_is_glob(value); |
912541b0 KS |
939 | if (has_split && has_glob) { |
940 | glob = GL_SPLIT_GLOB; | |
941 | } else if (has_split) { | |
942 | glob = GL_SPLIT; | |
943 | } else if (has_glob) { | |
33502ffe | 944 | if (streq(value, "?*")) |
912541b0 KS |
945 | glob = GL_SOMETHING; |
946 | else | |
947 | glob = GL_GLOB; | |
948 | } else { | |
949 | glob = GL_PLAIN; | |
950 | } | |
951 | token->key.glob = glob; | |
952 | } | |
953 | ||
954 | if (value != NULL && type > TK_M_MAX) { | |
955 | /* check if assigned value has substitution chars */ | |
956 | if (value[0] == '[') | |
957 | token->key.subst = SB_SUBSYS; | |
958 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
959 | token->key.subst = SB_FORMAT; | |
960 | else | |
961 | token->key.subst = SB_NONE; | |
962 | } | |
963 | ||
964 | if (attr != NULL) { | |
d6f116a7 | 965 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
966 | if (attr[0] == '[') |
967 | token->key.attrsubst = SB_SUBSYS; | |
968 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
969 | token->key.attrsubst = SB_FORMAT; | |
970 | else | |
971 | token->key.attrsubst = SB_NONE; | |
972 | } | |
973 | ||
974 | token->key.type = type; | |
975 | token->key.op = op; | |
976 | rule_tmp->token_cur++; | |
6880b25d | 977 | } |
e57e7bc1 | 978 | |
9ec6e95b | 979 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
980 | unsigned int i; |
981 | unsigned int start = 0; | |
982 | unsigned int end = rule_tmp->token_cur; | |
983 | ||
984 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
985 | enum token_type next_val = TK_UNSET; | |
986 | unsigned int next_idx = 0; | |
987 | unsigned int j; | |
988 | ||
989 | /* find smallest value */ | |
990 | for (j = start; j < end; j++) { | |
991 | if (rule_tmp->token[j].type == TK_UNSET) | |
992 | continue; | |
993 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
994 | next_val = rule_tmp->token[j].type; | |
995 | next_idx = j; | |
996 | } | |
997 | } | |
998 | ||
999 | /* add token and mark done */ | |
1000 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
1001 | return -1; | |
1002 | rule_tmp->token[next_idx].type = TK_UNSET; | |
1003 | ||
1004 | /* shrink range */ | |
1005 | if (next_idx == start) | |
1006 | start++; | |
1007 | if (next_idx+1 == end) | |
1008 | end--; | |
1009 | } | |
1010 | return 0; | |
724257d9 GKH |
1011 | } |
1012 | ||
19a8e656 ZJS |
1013 | #define LOG_RULE_ERROR(fmt, ...) log_error("Invalid rule %s:%u: " fmt, filename, lineno, ##__VA_ARGS__) |
1014 | #define LOG_RULE_WARNING(fmt, ...) log_warning("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1015 | #define LOG_RULE_DEBUG(fmt, ...) log_debug("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1016 | #define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; } | |
1017 | ||
4fd6af76 ZJS |
1018 | static void add_rule(struct udev_rules *rules, char *line, |
1019 | const char *filename, unsigned int filename_off, unsigned int lineno) { | |
912541b0 | 1020 | char *linepos; |
04a9d3a0 | 1021 | const char *attr; |
84198c18 TG |
1022 | struct rule_tmp rule_tmp = { |
1023 | .rules = rules, | |
1024 | .rule.type = TK_RULE, | |
1025 | }; | |
912541b0 | 1026 | |
775f8b3c KS |
1027 | /* the offset in the rule is limited to unsigned short */ |
1028 | if (filename_off < USHRT_MAX) | |
1029 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1030 | rule_tmp.rule.rule.filename_line = lineno; |
1031 | ||
1032 | linepos = line; | |
1033 | for (;;) { | |
1034 | char *key; | |
1035 | char *value; | |
1036 | enum operation_type op; | |
1037 | ||
e736cf35 | 1038 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1039 | /* Avoid erroring on trailing whitespace. This is probably rare |
1040 | * so save the work for the error case instead of always trying | |
1041 | * to strip the trailing whitespace with strstrip(). */ | |
1042 | while (isblank(*linepos)) | |
1043 | linepos++; | |
1044 | ||
e736cf35 DR |
1045 | /* If we aren't at the end of the line, this is a parsing error. |
1046 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1047 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1048 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1049 | _cleanup_free_ char *tmp; |
1050 | ||
1051 | tmp = cescape(buf); | |
ff49bc32 | 1052 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1053 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1054 | if (*linepos == '#') |
75716dd8 | 1055 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1056 | } |
912541b0 | 1057 | break; |
e736cf35 | 1058 | } |
912541b0 | 1059 | |
19a8e656 ZJS |
1060 | if (rule_tmp.token_cur >= ELEMENTSOF(rule_tmp.token)) |
1061 | LOG_AND_RETURN("temporary rule array too small, aborting event processing with %u items", rule_tmp.token_cur); | |
1062 | ||
33502ffe | 1063 | if (streq(key, "ACTION")) { |
19a8e656 ZJS |
1064 | if (op > OP_MATCH_MAX) |
1065 | LOG_AND_RETURN("invalid %s operation", key); | |
1066 | ||
912541b0 | 1067 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); |
912541b0 | 1068 | |
99f16bb8 | 1069 | } else if (streq(key, "DEVPATH")) { |
19a8e656 ZJS |
1070 | if (op > OP_MATCH_MAX) |
1071 | LOG_AND_RETURN("invalid %s operation", key); | |
1072 | ||
912541b0 | 1073 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); |
912541b0 | 1074 | |
99f16bb8 | 1075 | } else if (streq(key, "KERNEL")) { |
19a8e656 ZJS |
1076 | if (op > OP_MATCH_MAX) |
1077 | LOG_AND_RETURN("invalid %s operation", key); | |
1078 | ||
912541b0 | 1079 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); |
912541b0 | 1080 | |
99f16bb8 | 1081 | } else if (streq(key, "SUBSYSTEM")) { |
19a8e656 ZJS |
1082 | if (op > OP_MATCH_MAX) |
1083 | LOG_AND_RETURN("invalid %s operation", key); | |
1084 | ||
912541b0 | 1085 | /* bus, class, subsystem events should all be the same */ |
99f16bb8 ZJS |
1086 | if (STR_IN_SET(value, "subsystem", "bus", "class")) { |
1087 | if (!streq(value, "subsystem")) | |
19a8e656 ZJS |
1088 | LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value); |
1089 | ||
912541b0 KS |
1090 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
1091 | } else | |
1092 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
912541b0 | 1093 | |
99f16bb8 | 1094 | } else if (streq(key, "DRIVER")) { |
19a8e656 ZJS |
1095 | if (op > OP_MATCH_MAX) |
1096 | LOG_AND_RETURN("invalid %s operation", key); | |
1097 | ||
912541b0 | 1098 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); |
912541b0 | 1099 | |
99f16bb8 | 1100 | } else if (startswith(key, "ATTR{")) { |
fbd0b64f LP |
1101 | attr = get_key_attribute(rules->udev, |
1102 | key + STRLEN("ATTR")); | |
19a8e656 ZJS |
1103 | if (attr == NULL) |
1104 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1105 | ||
1106 | if (op == OP_REMOVE) | |
1107 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1108 | ||
f4cf2e5b | 1109 | if (op < OP_MATCH_MAX) |
912541b0 | 1110 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1111 | else |
912541b0 | 1112 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b | 1113 | |
99f16bb8 | 1114 | } else if (startswith(key, "SYSCTL{")) { |
fbd0b64f LP |
1115 | attr = get_key_attribute(rules->udev, |
1116 | key + STRLEN("SYSCTL")); | |
19a8e656 ZJS |
1117 | if (attr == NULL) |
1118 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1119 | ||
1120 | if (op == OP_REMOVE) | |
1121 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1122 | ||
f4cf2e5b KS |
1123 | if (op < OP_MATCH_MAX) |
1124 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1125 | else | |
1126 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 | 1127 | |
99f16bb8 | 1128 | } else if (startswith(key, "SECLABEL{")) { |
fbd0b64f LP |
1129 | attr = get_key_attribute(rules->udev, |
1130 | key + STRLEN("SECLABEL")); | |
19a8e656 ZJS |
1131 | if (attr == NULL) |
1132 | LOG_AND_RETURN("error parsing %s attribute", "SECLABEL"); | |
1133 | ||
1134 | if (op == OP_REMOVE) | |
1135 | LOG_AND_RETURN("invalid %s operation", "SECLABEL"); | |
c26547d6 KS |
1136 | |
1137 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
c26547d6 | 1138 | |
99f16bb8 | 1139 | } else if (streq(key, "KERNELS")) { |
19a8e656 ZJS |
1140 | if (op > OP_MATCH_MAX) |
1141 | LOG_AND_RETURN("invalid %s operation", key); | |
1142 | ||
912541b0 | 1143 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); |
912541b0 | 1144 | |
99f16bb8 | 1145 | } else if (streq(key, "SUBSYSTEMS")) { |
19a8e656 ZJS |
1146 | if (op > OP_MATCH_MAX) |
1147 | LOG_AND_RETURN("invalid %s operation", key); | |
1148 | ||
912541b0 | 1149 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); |
912541b0 | 1150 | |
99f16bb8 | 1151 | } else if (streq(key, "DRIVERS")) { |
19a8e656 ZJS |
1152 | if (op > OP_MATCH_MAX) |
1153 | LOG_AND_RETURN("invalid %s operation", key); | |
1154 | ||
912541b0 | 1155 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); |
912541b0 | 1156 | |
99f16bb8 | 1157 | } else if (startswith(key, "ATTRS{")) { |
19a8e656 ZJS |
1158 | if (op > OP_MATCH_MAX) |
1159 | LOG_AND_RETURN("invalid %s operation", "ATTRS"); | |
1160 | ||
fbd0b64f LP |
1161 | attr = get_key_attribute(rules->udev, |
1162 | key + STRLEN("ATTRS")); | |
19a8e656 ZJS |
1163 | if (attr == NULL) |
1164 | LOG_AND_RETURN("error parsing %s attribute", "ATTRS"); | |
1165 | ||
33502ffe | 1166 | if (startswith(attr, "device/")) |
19a8e656 ZJS |
1167 | LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix"); |
1168 | if (strstr(attr, "../") != NULL) | |
1169 | LOG_RULE_WARNING("direct reference to parent sysfs directory, may break in future kernels; please fix"); | |
912541b0 | 1170 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); |
912541b0 | 1171 | |
99f16bb8 | 1172 | } else if (streq(key, "TAGS")) { |
19a8e656 ZJS |
1173 | if (op > OP_MATCH_MAX) |
1174 | LOG_AND_RETURN("invalid %s operation", key); | |
1175 | ||
912541b0 | 1176 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); |
912541b0 | 1177 | |
99f16bb8 | 1178 | } else if (startswith(key, "ENV{")) { |
fbd0b64f LP |
1179 | attr = get_key_attribute(rules->udev, |
1180 | key + STRLEN("ENV")); | |
19a8e656 ZJS |
1181 | if (attr == NULL) |
1182 | LOG_AND_RETURN("error parsing %s attribute", "ENV"); | |
1183 | ||
1184 | if (op == OP_REMOVE) | |
1185 | LOG_AND_RETURN("invalid %s operation", "ENV"); | |
1186 | ||
1187 | if (op < OP_MATCH_MAX) | |
1188 | rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr); | |
1189 | else { | |
99f16bb8 ZJS |
1190 | if (STR_IN_SET(attr, |
1191 | "ACTION", | |
1192 | "SUBSYSTEM", | |
1193 | "DEVTYPE", | |
1194 | "MAJOR", | |
1195 | "MINOR", | |
1196 | "DRIVER", | |
1197 | "IFINDEX", | |
1198 | "DEVNAME", | |
1199 | "DEVLINKS", | |
1200 | "DEVPATH", | |
19a8e656 ZJS |
1201 | "TAGS")) |
1202 | LOG_AND_RETURN("invalid ENV attribute, '%s' cannot be set", attr); | |
1203 | ||
1204 | rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr); | |
912541b0 | 1205 | } |
912541b0 | 1206 | |
99f16bb8 | 1207 | } else if (streq(key, "TAG")) { |
912541b0 KS |
1208 | if (op < OP_MATCH_MAX) |
1209 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1210 | else | |
1211 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
912541b0 | 1212 | |
99f16bb8 | 1213 | } else if (streq(key, "PROGRAM")) { |
19a8e656 ZJS |
1214 | if (op == OP_REMOVE) |
1215 | LOG_AND_RETURN("invalid %s operation", key); | |
1216 | ||
912541b0 | 1217 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
912541b0 | 1218 | |
99f16bb8 | 1219 | } else if (streq(key, "RESULT")) { |
19a8e656 ZJS |
1220 | if (op > OP_MATCH_MAX) |
1221 | LOG_AND_RETURN("invalid %s operation", key); | |
1222 | ||
912541b0 | 1223 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); |
912541b0 | 1224 | |
99f16bb8 | 1225 | } else if (startswith(key, "IMPORT")) { |
fbd0b64f LP |
1226 | attr = get_key_attribute(rules->udev, |
1227 | key + STRLEN("IMPORT")); | |
912541b0 | 1228 | if (attr == NULL) { |
19a8e656 | 1229 | LOG_RULE_WARNING("ignoring IMPORT{} with missing type"); |
912541b0 KS |
1230 | continue; |
1231 | } | |
19a8e656 ZJS |
1232 | if (op == OP_REMOVE) |
1233 | LOG_AND_RETURN("invalid %s operation", "IMPORT"); | |
1234 | ||
33502ffe | 1235 | if (streq(attr, "program")) { |
912541b0 KS |
1236 | /* find known built-in command */ |
1237 | if (value[0] != '/') { | |
19a8e656 | 1238 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1239 | |
912541b0 | 1240 | if (cmd < UDEV_BUILTIN_MAX) { |
19a8e656 | 1241 | LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value); |
912541b0 KS |
1242 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1243 | continue; | |
1244 | } | |
1245 | } | |
912541b0 | 1246 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1247 | } else if (streq(attr, "builtin")) { |
19a8e656 | 1248 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1249 | |
19a8e656 ZJS |
1250 | if (cmd >= UDEV_BUILTIN_MAX) |
1251 | LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown", value); | |
912541b0 | 1252 | else |
19a8e656 ZJS |
1253 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1254 | } else if (streq(attr, "file")) | |
912541b0 | 1255 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
19a8e656 | 1256 | else if (streq(attr, "db")) |
912541b0 | 1257 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
19a8e656 | 1258 | else if (streq(attr, "cmdline")) |
912541b0 | 1259 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
19a8e656 | 1260 | else if (streq(attr, "parent")) |
912541b0 | 1261 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
19a8e656 ZJS |
1262 | else |
1263 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "IMPORT", attr); | |
912541b0 | 1264 | |
99f16bb8 | 1265 | } else if (startswith(key, "TEST")) { |
912541b0 KS |
1266 | mode_t mode = 0; |
1267 | ||
19a8e656 ZJS |
1268 | if (op > OP_MATCH_MAX) |
1269 | LOG_AND_RETURN("invalid %s operation", "TEST"); | |
1270 | ||
fbd0b64f LP |
1271 | attr = get_key_attribute(rules->udev, |
1272 | key + STRLEN("TEST")); | |
912541b0 KS |
1273 | if (attr != NULL) { |
1274 | mode = strtol(attr, NULL, 8); | |
1275 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
99f16bb8 | 1276 | } else |
912541b0 | 1277 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); |
912541b0 | 1278 | |
99f16bb8 | 1279 | } else if (startswith(key, "RUN")) { |
fbd0b64f LP |
1280 | attr = get_key_attribute(rules->udev, |
1281 | key + STRLEN("RUN")); | |
83cd6b75 KS |
1282 | if (attr == NULL) |
1283 | attr = "program"; | |
19a8e656 ZJS |
1284 | if (op == OP_REMOVE) |
1285 | LOG_AND_RETURN("invalid %s operation", "RUN"); | |
83cd6b75 | 1286 | |
33502ffe | 1287 | if (streq(attr, "builtin")) { |
19a8e656 | 1288 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
83cd6b75 KS |
1289 | |
1290 | if (cmd < UDEV_BUILTIN_MAX) | |
1291 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1292 | else | |
19a8e656 | 1293 | LOG_RULE_ERROR("RUN{builtin}: '%s' unknown", value); |
33502ffe | 1294 | } else if (streq(attr, "program")) { |
99f16bb8 | 1295 | const enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
83cd6b75 | 1296 | |
83cd6b75 | 1297 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
99f16bb8 | 1298 | } else |
19a8e656 | 1299 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "RUN", attr); |
912541b0 | 1300 | |
99f16bb8 | 1301 | } else if (streq(key, "LABEL")) { |
19a8e656 ZJS |
1302 | if (op == OP_REMOVE) |
1303 | LOG_AND_RETURN("invalid %s operation", key); | |
1304 | ||
915bf0f6 | 1305 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 | 1306 | |
99f16bb8 | 1307 | } else if (streq(key, "GOTO")) { |
19a8e656 ZJS |
1308 | if (op == OP_REMOVE) |
1309 | LOG_AND_RETURN("invalid %s operation", key); | |
1310 | ||
912541b0 | 1311 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
912541b0 | 1312 | |
99f16bb8 | 1313 | } else if (startswith(key, "NAME")) { |
19a8e656 ZJS |
1314 | if (op == OP_REMOVE) |
1315 | LOG_AND_RETURN("invalid %s operation", key); | |
1316 | ||
1317 | if (op < OP_MATCH_MAX) | |
912541b0 | 1318 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); |
19a8e656 | 1319 | else { |
33502ffe | 1320 | if (streq(value, "%k")) { |
19a8e656 | 1321 | LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove"); |
912541b0 KS |
1322 | continue; |
1323 | } | |
19a8e656 ZJS |
1324 | if (isempty(value)) { |
1325 | LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove"); | |
912541b0 KS |
1326 | continue; |
1327 | } | |
1328 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1329 | } | |
1330 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1331 | |
99f16bb8 | 1332 | } else if (streq(key, "SYMLINK")) { |
19a8e656 ZJS |
1333 | if (op == OP_REMOVE) |
1334 | LOG_AND_RETURN("invalid %s operation", key); | |
1335 | ||
8a173387 | 1336 | if (op < OP_MATCH_MAX) |
912541b0 | 1337 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1338 | else |
1339 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 | 1340 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1341 | |
99f16bb8 | 1342 | } else if (streq(key, "OWNER")) { |
912541b0 KS |
1343 | uid_t uid; |
1344 | char *endptr; | |
1345 | ||
19a8e656 ZJS |
1346 | if (op == OP_REMOVE) |
1347 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1348 | |
912541b0 | 1349 | uid = strtoul(value, &endptr, 10); |
19a8e656 | 1350 | if (endptr[0] == '\0') |
912541b0 | 1351 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
19a8e656 | 1352 | else if (rules->resolve_names > 0 && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1353 | uid = add_uid(rules, value); |
1354 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1f6b4113 | 1355 | } else if (rules->resolve_names >= 0) |
912541b0 | 1356 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1357 | |
912541b0 | 1358 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1359 | |
99f16bb8 | 1360 | } else if (streq(key, "GROUP")) { |
912541b0 KS |
1361 | gid_t gid; |
1362 | char *endptr; | |
1363 | ||
19a8e656 ZJS |
1364 | if (op == OP_REMOVE) |
1365 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1366 | |
912541b0 | 1367 | gid = strtoul(value, &endptr, 10); |
19a8e656 | 1368 | if (endptr[0] == '\0') |
912541b0 | 1369 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
19a8e656 | 1370 | else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1371 | gid = add_gid(rules, value); |
1372 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1f6b4113 | 1373 | } else if (rules->resolve_names >= 0) |
912541b0 | 1374 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1375 | |
912541b0 | 1376 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1377 | |
99f16bb8 | 1378 | } else if (streq(key, "MODE")) { |
912541b0 KS |
1379 | mode_t mode; |
1380 | char *endptr; | |
1381 | ||
19a8e656 ZJS |
1382 | if (op == OP_REMOVE) |
1383 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1384 | |
912541b0 KS |
1385 | mode = strtol(value, &endptr, 8); |
1386 | if (endptr[0] == '\0') | |
1387 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1388 | else | |
1389 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1390 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1391 | |
99f16bb8 | 1392 | } else if (streq(key, "OPTIONS")) { |
912541b0 KS |
1393 | const char *pos; |
1394 | ||
19a8e656 ZJS |
1395 | if (op == OP_REMOVE) |
1396 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1397 | |
912541b0 KS |
1398 | pos = strstr(value, "link_priority="); |
1399 | if (pos != NULL) { | |
fbd0b64f | 1400 | int prio = atoi(pos + STRLEN("link_priority=")); |
912541b0 KS |
1401 | |
1402 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1403 | } |
1404 | ||
9f20a8a3 | 1405 | pos = strstr(value, "string_escape="); |
912541b0 | 1406 | if (pos != NULL) { |
fbd0b64f | 1407 | pos += STRLEN("string_escape="); |
33502ffe | 1408 | if (startswith(pos, "none")) |
912541b0 | 1409 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1410 | else if (startswith(pos, "replace")) |
912541b0 KS |
1411 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1412 | } | |
1413 | ||
1414 | pos = strstr(value, "db_persist"); | |
1415 | if (pos != NULL) | |
1416 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1417 | ||
1418 | pos = strstr(value, "nowatch"); | |
1419 | if (pos != NULL) { | |
1420 | const int off = 0; | |
1421 | ||
1422 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1423 | } else { |
1424 | pos = strstr(value, "watch"); | |
1425 | if (pos != NULL) { | |
1426 | const int on = 1; | |
1427 | ||
1428 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1429 | } |
1430 | } | |
1431 | ||
1432 | pos = strstr(value, "static_node="); | |
1433 | if (pos != NULL) { | |
fbd0b64f | 1434 | pos += STRLEN("static_node="); |
19a8e656 | 1435 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL); |
912541b0 KS |
1436 | rule_tmp.rule.rule.has_static_node = true; |
1437 | } | |
1438 | ||
19a8e656 ZJS |
1439 | } else |
1440 | LOG_AND_RETURN("unknown key '%s'", key); | |
912541b0 KS |
1441 | } |
1442 | ||
19a8e656 | 1443 | /* add rule token and sort tokens */ |
912541b0 | 1444 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; |
19a8e656 ZJS |
1445 | if (add_token(rules, &rule_tmp.rule) != 0 || sort_token(rules, &rule_tmp) != 0) |
1446 | LOG_RULE_ERROR("failed to add rule token"); | |
c7521974 KS |
1447 | } |
1448 | ||
9ec6e95b | 1449 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1450 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1451 | unsigned int first_token; |
775f8b3c | 1452 | unsigned int filename_off; |
912541b0 KS |
1453 | char line[UTIL_LINE_SIZE]; |
1454 | int line_nr = 0; | |
1455 | unsigned int i; | |
1456 | ||
ed88bcfb ZJS |
1457 | f = fopen(filename, "re"); |
1458 | if (!f) { | |
1459 | if (errno == ENOENT) | |
1460 | return 0; | |
1461 | else | |
1462 | return -errno; | |
775f8b3c | 1463 | } |
912541b0 | 1464 | |
ed88bcfb ZJS |
1465 | if (null_or_empty_fd(fileno(f))) { |
1466 | log_debug("Skipping empty file: %s", filename); | |
1467 | return 0; | |
1468 | } else | |
1469 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1470 | |
1471 | first_token = rules->token_cur; | |
915bf0f6 | 1472 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1473 | |
1474 | while (fgets(line, sizeof(line), f) != NULL) { | |
1475 | char *key; | |
1476 | size_t len; | |
1477 | ||
1478 | /* skip whitespace */ | |
1479 | line_nr++; | |
1480 | key = line; | |
1481 | while (isspace(key[0])) | |
1482 | key++; | |
1483 | ||
1484 | /* comment */ | |
1485 | if (key[0] == '#') | |
1486 | continue; | |
1487 | ||
1488 | len = strlen(line); | |
1489 | if (len < 3) | |
1490 | continue; | |
1491 | ||
1492 | /* continue reading if backslash+newline is found */ | |
1493 | while (line[len-2] == '\\') { | |
1494 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1495 | break; | |
1496 | if (strlen(&line[len-2]) < 2) | |
1497 | break; | |
1498 | line_nr++; | |
1499 | len = strlen(line); | |
1500 | } | |
1501 | ||
1502 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1503 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1504 | continue; |
1505 | } | |
1506 | add_rule(rules, key, filename, filename_off, line_nr); | |
1507 | } | |
912541b0 KS |
1508 | |
1509 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1510 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1511 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1512 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1513 | unsigned int j; |
1514 | ||
1515 | for (j = i+1; j < rules->token_cur; j++) { | |
1516 | if (rules->tokens[j].type != TK_RULE) | |
1517 | continue; | |
1518 | if (rules->tokens[j].rule.label_off == 0) | |
1519 | continue; | |
915bf0f6 | 1520 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1521 | continue; |
1522 | rules->tokens[i].key.rule_goto = j; | |
1523 | break; | |
1524 | } | |
1525 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1526 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1527 | } |
1528 | } | |
1529 | return 0; | |
c7521974 KS |
1530 | } |
1531 | ||
9ec6e95b | 1532 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1533 | struct udev_rules *rules; |
1534 | struct udev_list file_list; | |
912541b0 | 1535 | struct token end_token; |
775f8b3c KS |
1536 | char **files, **f; |
1537 | int r; | |
912541b0 | 1538 | |
955d98c9 | 1539 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1540 | if (rules == NULL) |
1541 | return NULL; | |
1542 | rules->udev = udev; | |
1543 | rules->resolve_names = resolve_names; | |
1544 | udev_list_init(udev, &file_list, true); | |
1545 | ||
1546 | /* init token array and string buffer */ | |
1547 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1548 | if (rules->tokens == NULL) |
1549 | return udev_rules_unref(rules); | |
912541b0 KS |
1550 | rules->token_max = PREALLOC_TOKEN; |
1551 | ||
915bf0f6 KS |
1552 | rules->strbuf = strbuf_new(); |
1553 | if (!rules->strbuf) | |
0820a4f0 VP |
1554 | return udev_rules_unref(rules); |
1555 | ||
3b8c1cb0 KS |
1556 | udev_rules_check_timestamp(rules); |
1557 | ||
b5084605 | 1558 | r = conf_files_list_strv(&files, ".rules", NULL, 0, rules_dirs); |
775f8b3c | 1559 | if (r < 0) { |
da927ba9 | 1560 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1561 | return udev_rules_unref(rules); |
912541b0 KS |
1562 | } |
1563 | ||
775f8b3c KS |
1564 | /* |
1565 | * The offset value in the rules strct is limited; add all | |
1566 | * rules file names to the beginning of the string buffer. | |
1567 | */ | |
1568 | STRV_FOREACH(f, files) | |
915bf0f6 | 1569 | rules_add_string(rules, *f); |
912541b0 | 1570 | |
775f8b3c KS |
1571 | STRV_FOREACH(f, files) |
1572 | parse_file(rules, *f); | |
1573 | ||
1574 | strv_free(files); | |
912541b0 | 1575 | |
29804cc1 | 1576 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1577 | end_token.type = TK_END; |
1578 | add_token(rules, &end_token); | |
9f6445e3 | 1579 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1580 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1581 | |
915bf0f6 | 1582 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1583 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1584 | rules->strbuf->in_count, rules->strbuf->in_len, |
1585 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1586 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1587 | |
1588 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1589 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1590 | rules->uids_cur = 0; |
1591 | rules->uids_max = 0; | |
a1e58e8e | 1592 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1593 | rules->gids_cur = 0; |
1594 | rules->gids_max = 0; | |
1595 | ||
1596 | dump_rules(rules); | |
1597 | return rules; | |
c7521974 KS |
1598 | } |
1599 | ||
9ec6e95b | 1600 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1601 | if (rules == NULL) |
1602 | return NULL; | |
1603 | free(rules->tokens); | |
915bf0f6 | 1604 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1605 | free(rules->uids); |
1606 | free(rules->gids); | |
6b430fdb | 1607 | return mfree(rules); |
c7521974 | 1608 | } |
6880b25d | 1609 | |
9ec6e95b | 1610 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1611 | if (!rules) |
1612 | return false; | |
1613 | ||
2ad8416d | 1614 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1615 | } |
1616 | ||
9ec6e95b | 1617 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1618 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1619 | char *pos; |
1620 | bool match = false; | |
1621 | ||
1622 | if (val == NULL) | |
1623 | val = ""; | |
1624 | ||
1625 | switch (token->key.glob) { | |
1626 | case GL_PLAIN: | |
33502ffe | 1627 | match = (streq(key_value, val)); |
912541b0 KS |
1628 | break; |
1629 | case GL_GLOB: | |
1630 | match = (fnmatch(key_value, val, 0) == 0); | |
1631 | break; | |
1632 | case GL_SPLIT: | |
1633 | { | |
33502ffe | 1634 | const char *s; |
912541b0 KS |
1635 | size_t len; |
1636 | ||
915bf0f6 | 1637 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1638 | len = strlen(val); |
1639 | for (;;) { | |
1640 | const char *next; | |
1641 | ||
33502ffe | 1642 | next = strchr(s, '|'); |
912541b0 | 1643 | if (next != NULL) { |
33502ffe | 1644 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1645 | |
641906e9 | 1646 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1647 | if (match) |
1648 | break; | |
1649 | } else { | |
33502ffe | 1650 | match = (streq(s, val)); |
912541b0 KS |
1651 | break; |
1652 | } | |
33502ffe | 1653 | s = &next[1]; |
912541b0 KS |
1654 | } |
1655 | break; | |
1656 | } | |
1657 | case GL_SPLIT_GLOB: | |
1658 | { | |
1659 | char value[UTIL_PATH_SIZE]; | |
1660 | ||
d5a89d7d | 1661 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1662 | key_value = value; |
1663 | while (key_value != NULL) { | |
1664 | pos = strchr(key_value, '|'); | |
1665 | if (pos != NULL) { | |
1666 | pos[0] = '\0'; | |
1667 | pos = &pos[1]; | |
1668 | } | |
912541b0 KS |
1669 | match = (fnmatch(key_value, val, 0) == 0); |
1670 | if (match) | |
1671 | break; | |
1672 | key_value = pos; | |
1673 | } | |
1674 | break; | |
1675 | } | |
1676 | case GL_SOMETHING: | |
1677 | match = (val[0] != '\0'); | |
1678 | break; | |
1679 | case GL_UNSET: | |
1680 | return -1; | |
1681 | } | |
1682 | ||
baa30fbc | 1683 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1684 | return 0; |
baa30fbc | 1685 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1686 | return 0; |
912541b0 | 1687 | return -1; |
6880b25d KS |
1688 | } |
1689 | ||
9ec6e95b | 1690 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1691 | const char *name; |
1692 | char nbuf[UTIL_NAME_SIZE]; | |
1693 | const char *value; | |
1694 | char vbuf[UTIL_NAME_SIZE]; | |
1695 | size_t len; | |
1696 | ||
915bf0f6 | 1697 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1698 | switch (cur->key.attrsubst) { |
1699 | case SB_FORMAT: | |
e20a9171 | 1700 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false); |
912541b0 | 1701 | name = nbuf; |
4831981d | 1702 | _fallthrough_; |
912541b0 KS |
1703 | case SB_NONE: |
1704 | value = udev_device_get_sysattr_value(dev, name); | |
1705 | if (value == NULL) | |
1706 | return -1; | |
1707 | break; | |
1708 | case SB_SUBSYS: | |
1709 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1710 | return -1; | |
1711 | value = vbuf; | |
1712 | break; | |
1713 | default: | |
1714 | return -1; | |
1715 | } | |
1716 | ||
1717 | /* remove trailing whitespace, if not asked to match for it */ | |
1718 | len = strlen(value); | |
1719 | if (len > 0 && isspace(value[len-1])) { | |
1720 | const char *key_value; | |
1721 | size_t klen; | |
1722 | ||
915bf0f6 | 1723 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1724 | klen = strlen(key_value); |
1725 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1726 | if (value != vbuf) { | |
d5a89d7d | 1727 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1728 | value = vbuf; |
1729 | } | |
1730 | while (len > 0 && isspace(vbuf[--len])) | |
1731 | vbuf[len] = '\0'; | |
912541b0 KS |
1732 | } |
1733 | } | |
1734 | ||
1735 | return match_key(rules, cur, value); | |
6880b25d KS |
1736 | } |
1737 | ||
1738 | enum escape_type { | |
912541b0 KS |
1739 | ESCAPE_UNSET, |
1740 | ESCAPE_NONE, | |
1741 | ESCAPE_REPLACE, | |
6880b25d KS |
1742 | }; |
1743 | ||
4fd6af76 ZJS |
1744 | void udev_rules_apply_to_event(struct udev_rules *rules, |
1745 | struct udev_event *event, | |
1746 | usec_t timeout_usec, | |
1747 | usec_t timeout_warn_usec, | |
1748 | struct udev_list *properties_list) { | |
912541b0 KS |
1749 | struct token *cur; |
1750 | struct token *rule; | |
1751 | enum escape_type esc = ESCAPE_UNSET; | |
1752 | bool can_set_name; | |
88b013b2 | 1753 | int r; |
912541b0 KS |
1754 | |
1755 | if (rules->tokens == NULL) | |
4fd6af76 | 1756 | return; |
912541b0 | 1757 | |
33502ffe | 1758 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1759 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1760 | udev_device_get_ifindex(event->dev) > 0)); | |
1761 | ||
1762 | /* loop through token list, match, run actions or forward to next rule */ | |
1763 | cur = &rules->tokens[0]; | |
1764 | rule = cur; | |
1765 | for (;;) { | |
1766 | dump_token(rules, cur); | |
1767 | switch (cur->type) { | |
1768 | case TK_RULE: | |
1769 | /* current rule */ | |
1770 | rule = cur; | |
1771 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1772 | if (!can_set_name && rule->rule.can_set_name) | |
1773 | goto nomatch; | |
1774 | esc = ESCAPE_UNSET; | |
1775 | break; | |
1776 | case TK_M_ACTION: | |
1777 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1778 | goto nomatch; | |
1779 | break; | |
1780 | case TK_M_DEVPATH: | |
1781 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1782 | goto nomatch; | |
1783 | break; | |
1784 | case TK_M_KERNEL: | |
1785 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1786 | goto nomatch; | |
1787 | break; | |
1788 | case TK_M_DEVLINK: { | |
912541b0 KS |
1789 | struct udev_list_entry *list_entry; |
1790 | bool match = false; | |
1791 | ||
1792 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1793 | const char *devlink; | |
1794 | ||
fbd0b64f | 1795 | devlink = udev_list_entry_get_name(list_entry) + STRLEN("/dev/"); |
912541b0 KS |
1796 | if (match_key(rules, cur, devlink) == 0) { |
1797 | match = true; | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | if (!match) | |
1802 | goto nomatch; | |
1803 | break; | |
1804 | } | |
1805 | case TK_M_NAME: | |
1806 | if (match_key(rules, cur, event->name) != 0) | |
1807 | goto nomatch; | |
1808 | break; | |
1809 | case TK_M_ENV: { | |
915bf0f6 | 1810 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1811 | const char *value; |
1812 | ||
1813 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1814 | |
1815 | /* check global properties */ | |
1816 | if (!value && properties_list) { | |
1817 | struct udev_list_entry *list_entry; | |
1818 | ||
1819 | list_entry = udev_list_get_entry(properties_list); | |
1820 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1821 | if (list_entry != NULL) | |
1822 | value = udev_list_entry_get_value(list_entry); | |
1823 | } | |
1824 | ||
1825 | if (!value) | |
912541b0 | 1826 | value = ""; |
912541b0 KS |
1827 | if (match_key(rules, cur, value)) |
1828 | goto nomatch; | |
1829 | break; | |
1830 | } | |
1831 | case TK_M_TAG: { | |
1832 | struct udev_list_entry *list_entry; | |
1833 | bool match = false; | |
1834 | ||
1835 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1836 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1837 | match = true; |
1838 | break; | |
1839 | } | |
1840 | } | |
4302857b FF |
1841 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1842 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1843 | goto nomatch; |
1844 | break; | |
1845 | } | |
1846 | case TK_M_SUBSYSTEM: | |
1847 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1848 | goto nomatch; | |
1849 | break; | |
1850 | case TK_M_DRIVER: | |
1851 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1852 | goto nomatch; | |
1853 | break; | |
912541b0 KS |
1854 | case TK_M_ATTR: |
1855 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1856 | goto nomatch; | |
1857 | break; | |
f4cf2e5b KS |
1858 | case TK_M_SYSCTL: { |
1859 | char filename[UTIL_PATH_SIZE]; | |
1860 | _cleanup_free_ char *value = NULL; | |
1861 | size_t len; | |
1862 | ||
e20a9171 | 1863 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b KS |
1864 | sysctl_normalize(filename); |
1865 | if (sysctl_read(filename, &value) < 0) | |
1866 | goto nomatch; | |
1867 | ||
1868 | len = strlen(value); | |
1869 | while (len > 0 && isspace(value[--len])) | |
1870 | value[len] = '\0'; | |
1871 | if (match_key(rules, cur, value) != 0) | |
1872 | goto nomatch; | |
1873 | break; | |
1874 | } | |
912541b0 KS |
1875 | case TK_M_KERNELS: |
1876 | case TK_M_SUBSYSTEMS: | |
1877 | case TK_M_DRIVERS: | |
1878 | case TK_M_ATTRS: | |
1879 | case TK_M_TAGS: { | |
1880 | struct token *next; | |
1881 | ||
1882 | /* get whole sequence of parent matches */ | |
1883 | next = cur; | |
1884 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1885 | next++; | |
1886 | ||
1887 | /* loop over parents */ | |
1888 | event->dev_parent = event->dev; | |
1889 | for (;;) { | |
1890 | struct token *key; | |
1891 | ||
912541b0 KS |
1892 | /* loop over sequence of parent match keys */ |
1893 | for (key = cur; key < next; key++ ) { | |
1894 | dump_token(rules, key); | |
1895 | switch(key->type) { | |
1896 | case TK_M_KERNELS: | |
1897 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
1898 | goto try_parent; | |
1899 | break; | |
1900 | case TK_M_SUBSYSTEMS: | |
1901 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
1902 | goto try_parent; | |
1903 | break; | |
1904 | case TK_M_DRIVERS: | |
1905 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
1906 | goto try_parent; | |
1907 | break; | |
1908 | case TK_M_ATTRS: | |
1909 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
1910 | goto try_parent; | |
1911 | break; | |
1912 | case TK_M_TAGS: { | |
915bf0f6 | 1913 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1914 | |
1915 | if (match && key->key.op == OP_NOMATCH) | |
1916 | goto try_parent; | |
1917 | if (!match && key->key.op == OP_MATCH) | |
1918 | goto try_parent; | |
1919 | break; | |
1920 | } | |
1921 | default: | |
1922 | goto nomatch; | |
1923 | } | |
912541b0 | 1924 | } |
912541b0 KS |
1925 | break; |
1926 | ||
1927 | try_parent: | |
1928 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
1929 | if (event->dev_parent == NULL) | |
1930 | goto nomatch; | |
1931 | } | |
1932 | /* move behind our sequence of parent match keys */ | |
1933 | cur = next; | |
1934 | continue; | |
1935 | } | |
1936 | case TK_M_TEST: { | |
1937 | char filename[UTIL_PATH_SIZE]; | |
1938 | struct stat statbuf; | |
1939 | int match; | |
1940 | ||
e20a9171 | 1941 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename), false); |
912541b0 KS |
1942 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
1943 | if (filename[0] != '/') { | |
1944 | char tmp[UTIL_PATH_SIZE]; | |
1945 | ||
d5a89d7d KS |
1946 | strscpy(tmp, sizeof(tmp), filename); |
1947 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
1948 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
1949 | } | |
1950 | } | |
1951 | attr_subst_subdir(filename, sizeof(filename)); | |
1952 | ||
1953 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 1954 | if (match && cur->key.mode > 0) |
912541b0 | 1955 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
1956 | if (match && cur->key.op == OP_NOMATCH) |
1957 | goto nomatch; | |
1958 | if (!match && cur->key.op == OP_MATCH) | |
1959 | goto nomatch; | |
1960 | break; | |
1961 | } | |
912541b0 KS |
1962 | case TK_M_PROGRAM: { |
1963 | char program[UTIL_PATH_SIZE]; | |
209b031e | 1964 | char result[UTIL_LINE_SIZE]; |
912541b0 | 1965 | |
a1e58e8e | 1966 | event->program_result = mfree(event->program_result); |
e20a9171 | 1967 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program), false); |
9f6445e3 | 1968 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 1969 | program, |
915bf0f6 | 1970 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 1971 | rule->rule.filename_line); |
912541b0 | 1972 | |
bbf35206 | 1973 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)) < 0) { |
912541b0 KS |
1974 | if (cur->key.op != OP_NOMATCH) |
1975 | goto nomatch; | |
1976 | } else { | |
1977 | int count; | |
1978 | ||
7546145e | 1979 | delete_trailing_chars(result, "\n"); |
4c701096 | 1980 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
1981 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); |
1982 | if (count > 0) | |
9f6445e3 | 1983 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
1984 | } |
1985 | event->program_result = strdup(result); | |
912541b0 KS |
1986 | if (cur->key.op == OP_NOMATCH) |
1987 | goto nomatch; | |
1988 | } | |
1989 | break; | |
1990 | } | |
1991 | case TK_M_IMPORT_FILE: { | |
1992 | char import[UTIL_PATH_SIZE]; | |
1993 | ||
e20a9171 | 1994 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
912541b0 KS |
1995 | if (import_file_into_properties(event->dev, import) != 0) |
1996 | if (cur->key.op != OP_NOMATCH) | |
1997 | goto nomatch; | |
1998 | break; | |
1999 | } | |
2000 | case TK_M_IMPORT_PROG: { | |
2001 | char import[UTIL_PATH_SIZE]; | |
2002 | ||
e20a9171 | 2003 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
9f6445e3 | 2004 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2005 | import, |
915bf0f6 | 2006 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2007 | rule->rule.filename_line); |
912541b0 | 2008 | |
8314de1d | 2009 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import) != 0) |
912541b0 KS |
2010 | if (cur->key.op != OP_NOMATCH) |
2011 | goto nomatch; | |
2012 | break; | |
2013 | } | |
2014 | case TK_M_IMPORT_BUILTIN: { | |
2015 | char command[UTIL_PATH_SIZE]; | |
2016 | ||
2017 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2018 | /* check if we ran already */ | |
2019 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2020 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2021 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2022 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2023 | rule->rule.filename_line); |
912541b0 KS |
2024 | /* return the result from earlier run */ |
2025 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2026 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2027 | goto nomatch; |
2028 | break; | |
2029 | } | |
2030 | /* mark as ran */ | |
2031 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2032 | } | |
2033 | ||
e20a9171 | 2034 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command), false); |
9f6445e3 | 2035 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2036 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2037 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2038 | rule->rule.filename_line); |
912541b0 KS |
2039 | |
2040 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2041 | /* remember failure */ | |
9f6445e3 | 2042 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2043 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2044 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2045 | if (cur->key.op != OP_NOMATCH) | |
2046 | goto nomatch; | |
2047 | } | |
2048 | break; | |
2049 | } | |
2050 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2051 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2052 | const char *value; |
2053 | ||
2054 | value = udev_device_get_property_value(event->dev_db, key); | |
df546eb5 TG |
2055 | if (value != NULL) |
2056 | udev_device_add_property(event->dev, key, value); | |
2057 | else { | |
912541b0 KS |
2058 | if (cur->key.op != OP_NOMATCH) |
2059 | goto nomatch; | |
2060 | } | |
2061 | break; | |
2062 | } | |
2063 | case TK_M_IMPORT_CMDLINE: { | |
88b013b2 | 2064 | _cleanup_free_ char *value = NULL; |
912541b0 | 2065 | bool imported = false; |
88b013b2 | 2066 | const char *key; |
912541b0 | 2067 | |
88b013b2 LP |
2068 | key = rules_str(rules, cur->key.value_off); |
2069 | ||
2070 | r = proc_cmdline_get_key(key, PROC_CMDLINE_VALUE_OPTIONAL, &value); | |
2071 | if (r < 0) | |
2072 | log_debug_errno(r, "Failed to read %s from /proc/cmdline, ignoring: %m", key); | |
2073 | else if (r > 0) { | |
2074 | imported = true; | |
2075 | ||
2076 | if (value) | |
2077 | udev_device_add_property(event->dev, key, value); | |
2078 | else | |
2079 | /* we import simple flags as 'FLAG=1' */ | |
2080 | udev_device_add_property(event->dev, key, "1"); | |
912541b0 | 2081 | } |
88b013b2 | 2082 | |
912541b0 KS |
2083 | if (!imported && cur->key.op != OP_NOMATCH) |
2084 | goto nomatch; | |
2085 | break; | |
2086 | } | |
2087 | case TK_M_IMPORT_PARENT: { | |
2088 | char import[UTIL_PATH_SIZE]; | |
2089 | ||
e20a9171 | 2090 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
912541b0 KS |
2091 | if (import_parent_into_properties(event->dev, import) != 0) |
2092 | if (cur->key.op != OP_NOMATCH) | |
2093 | goto nomatch; | |
2094 | break; | |
2095 | } | |
2096 | case TK_M_RESULT: | |
2097 | if (match_key(rules, cur, event->program_result) != 0) | |
2098 | goto nomatch; | |
2099 | break; | |
2100 | case TK_A_STRING_ESCAPE_NONE: | |
2101 | esc = ESCAPE_NONE; | |
2102 | break; | |
2103 | case TK_A_STRING_ESCAPE_REPLACE: | |
2104 | esc = ESCAPE_REPLACE; | |
2105 | break; | |
2106 | case TK_A_DB_PERSIST: | |
2107 | udev_device_set_db_persist(event->dev); | |
2108 | break; | |
2109 | case TK_A_INOTIFY_WATCH: | |
2110 | if (event->inotify_watch_final) | |
2111 | break; | |
2112 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2113 | event->inotify_watch_final = true; | |
2114 | event->inotify_watch = cur->key.watch; | |
2115 | break; | |
2116 | case TK_A_DEVLINK_PRIO: | |
2117 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2118 | break; | |
2119 | case TK_A_OWNER: { | |
2120 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2121 | const char *ow = owner; |
912541b0 KS |
2122 | |
2123 | if (event->owner_final) | |
2124 | break; | |
2125 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2126 | event->owner_final = true; | |
e20a9171 | 2127 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner), false); |
1edefa4f | 2128 | event->owner_set = true; |
23bf8dd7 TG |
2129 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2130 | if (r < 0) { | |
2da03cbf | 2131 | log_unknown_owner(r, "user", owner); |
23bf8dd7 TG |
2132 | event->uid = 0; |
2133 | } | |
9f6445e3 | 2134 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2135 | event->uid, |
915bf0f6 | 2136 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2137 | rule->rule.filename_line); |
912541b0 KS |
2138 | break; |
2139 | } | |
2140 | case TK_A_GROUP: { | |
2141 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2142 | const char *gr = group; |
912541b0 KS |
2143 | |
2144 | if (event->group_final) | |
2145 | break; | |
2146 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2147 | event->group_final = true; | |
e20a9171 | 2148 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group), false); |
1edefa4f | 2149 | event->group_set = true; |
23bf8dd7 TG |
2150 | r = get_group_creds(&gr, &event->gid); |
2151 | if (r < 0) { | |
2da03cbf | 2152 | log_unknown_owner(r, "group", group); |
23bf8dd7 TG |
2153 | event->gid = 0; |
2154 | } | |
9f6445e3 | 2155 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2156 | event->gid, |
915bf0f6 | 2157 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2158 | rule->rule.filename_line); |
912541b0 KS |
2159 | break; |
2160 | } | |
2161 | case TK_A_MODE: { | |
2162 | char mode_str[UTIL_NAME_SIZE]; | |
2163 | mode_t mode; | |
2164 | char *endptr; | |
2165 | ||
2166 | if (event->mode_final) | |
2167 | break; | |
e20a9171 | 2168 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str), false); |
912541b0 KS |
2169 | mode = strtol(mode_str, &endptr, 8); |
2170 | if (endptr[0] != '\0') { | |
9f6445e3 | 2171 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2172 | break; |
2173 | } | |
2174 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2175 | event->mode_final = true; | |
2176 | event->mode_set = true; | |
2177 | event->mode = mode; | |
9f6445e3 | 2178 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2179 | event->mode, |
915bf0f6 | 2180 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2181 | rule->rule.filename_line); |
912541b0 KS |
2182 | break; |
2183 | } | |
2184 | case TK_A_OWNER_ID: | |
2185 | if (event->owner_final) | |
2186 | break; | |
2187 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2188 | event->owner_final = true; | |
1edefa4f | 2189 | event->owner_set = true; |
912541b0 | 2190 | event->uid = cur->key.uid; |
9f6445e3 | 2191 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2192 | event->uid, |
915bf0f6 | 2193 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2194 | rule->rule.filename_line); |
912541b0 KS |
2195 | break; |
2196 | case TK_A_GROUP_ID: | |
2197 | if (event->group_final) | |
2198 | break; | |
2199 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2200 | event->group_final = true; | |
1edefa4f | 2201 | event->group_set = true; |
912541b0 | 2202 | event->gid = cur->key.gid; |
9f6445e3 | 2203 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2204 | event->gid, |
915bf0f6 | 2205 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2206 | rule->rule.filename_line); |
912541b0 KS |
2207 | break; |
2208 | case TK_A_MODE_ID: | |
2209 | if (event->mode_final) | |
2210 | break; | |
2211 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2212 | event->mode_final = true; | |
2213 | event->mode_set = true; | |
2214 | event->mode = cur->key.mode; | |
9f6445e3 | 2215 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2216 | event->mode, |
915bf0f6 | 2217 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2218 | rule->rule.filename_line); |
912541b0 | 2219 | break; |
c26547d6 | 2220 | case TK_A_SECLABEL: { |
4f985bd8 | 2221 | char label_str[UTIL_LINE_SIZE] = {}; |
c26547d6 KS |
2222 | const char *name, *label; |
2223 | ||
2224 | name = rules_str(rules, cur->key.attr_off); | |
e20a9171 | 2225 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), label_str, sizeof(label_str), false); |
4f985bd8 MS |
2226 | if (label_str[0] != '\0') |
2227 | label = label_str; | |
2228 | else | |
2229 | label = rules_str(rules, cur->key.value_off); | |
2230 | ||
4c701096 | 2231 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
c26547d6 KS |
2232 | udev_list_cleanup(&event->seclabel_list); |
2233 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2234 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2235 | name, label, |
2236 | rules_str(rules, rule->rule.filename_off), | |
2237 | rule->rule.filename_line); | |
2238 | break; | |
2239 | } | |
912541b0 | 2240 | case TK_A_ENV: { |
915bf0f6 KS |
2241 | const char *name = rules_str(rules, cur->key.attr_off); |
2242 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2243 | char value_new[UTIL_NAME_SIZE]; |
2244 | const char *value_old = NULL; | |
912541b0 | 2245 | |
07845c14 KS |
2246 | if (value[0] == '\0') { |
2247 | if (cur->key.op == OP_ADD) | |
2248 | break; | |
912541b0 | 2249 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2250 | break; |
912541b0 | 2251 | } |
07845c14 KS |
2252 | |
2253 | if (cur->key.op == OP_ADD) | |
2254 | value_old = udev_device_get_property_value(event->dev, name); | |
2255 | if (value_old) { | |
2256 | char temp[UTIL_NAME_SIZE]; | |
2257 | ||
2258 | /* append value separated by space */ | |
e20a9171 | 2259 | udev_event_apply_format(event, value, temp, sizeof(temp), false); |
d5a89d7d | 2260 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 | 2261 | } else |
e20a9171 | 2262 | udev_event_apply_format(event, value, value_new, sizeof(value_new), false); |
07845c14 | 2263 | |
df546eb5 | 2264 | udev_device_add_property(event->dev, name, value_new); |
912541b0 KS |
2265 | break; |
2266 | } | |
2267 | case TK_A_TAG: { | |
2268 | char tag[UTIL_PATH_SIZE]; | |
2269 | const char *p; | |
2270 | ||
e20a9171 | 2271 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag), false); |
4c701096 | 2272 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
912541b0 KS |
2273 | udev_device_cleanup_tags_list(event->dev); |
2274 | for (p = tag; *p != '\0'; p++) { | |
2275 | if ((*p >= 'a' && *p <= 'z') || | |
2276 | (*p >= 'A' && *p <= 'Z') || | |
2277 | (*p >= '0' && *p <= '9') || | |
4c701096 | 2278 | IN_SET(*p, '-', '_')) |
912541b0 | 2279 | continue; |
9f6445e3 | 2280 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2281 | break; |
2282 | } | |
8e3ba377 DH |
2283 | if (cur->key.op == OP_REMOVE) |
2284 | udev_device_remove_tag(event->dev, tag); | |
2285 | else | |
2286 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2287 | break; |
2288 | } | |
2289 | case TK_A_NAME: { | |
915bf0f6 | 2290 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2291 | |
912541b0 KS |
2292 | char name_str[UTIL_PATH_SIZE]; |
2293 | int count; | |
2294 | ||
2295 | if (event->name_final) | |
2296 | break; | |
2297 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2298 | event->name_final = true; | |
e20a9171 | 2299 | udev_event_apply_format(event, name, name_str, sizeof(name_str), false); |
4c701096 | 2300 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
2301 | count = util_replace_chars(name_str, "/"); |
2302 | if (count > 0) | |
9f6445e3 | 2303 | log_debug("%i character(s) replaced", count); |
912541b0 | 2304 | } |
6ada823a | 2305 | if (major(udev_device_get_devnum(event->dev)) && |
fbd0b64f | 2306 | !streq(name_str, udev_device_get_devnode(event->dev) + STRLEN("/dev/"))) { |
99f16bb8 ZJS |
2307 | log_error("NAME=\"%s\" ignored, kernel device nodes cannot be renamed; please fix it in %s:%u\n", |
2308 | name, | |
2309 | rules_str(rules, rule->rule.filename_off), | |
2310 | rule->rule.filename_line); | |
6ada823a | 2311 | break; |
0ecfcbd4 | 2312 | } |
4fd6af76 ZJS |
2313 | if (free_and_strdup(&event->name, name_str) < 0) { |
2314 | log_oom(); | |
2315 | return; | |
2316 | } | |
9f6445e3 | 2317 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2318 | event->name, |
915bf0f6 | 2319 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2320 | rule->rule.filename_line); |
912541b0 KS |
2321 | break; |
2322 | } | |
2323 | case TK_A_DEVLINK: { | |
2324 | char temp[UTIL_PATH_SIZE]; | |
2325 | char filename[UTIL_PATH_SIZE]; | |
2326 | char *pos, *next; | |
2327 | int count = 0; | |
2328 | ||
2329 | if (event->devlink_final) | |
2330 | break; | |
2331 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2332 | break; | |
2333 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2334 | event->devlink_final = true; | |
4c701096 | 2335 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
912541b0 KS |
2336 | udev_device_cleanup_devlinks_list(event->dev); |
2337 | ||
2338 | /* allow multiple symlinks separated by spaces */ | |
0a10235e | 2339 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp), esc != ESCAPE_NONE); |
912541b0 KS |
2340 | if (esc == ESCAPE_UNSET) |
2341 | count = util_replace_chars(temp, "/ "); | |
2342 | else if (esc == ESCAPE_REPLACE) | |
2343 | count = util_replace_chars(temp, "/"); | |
2344 | if (count > 0) | |
9f6445e3 | 2345 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2346 | pos = temp; |
2347 | while (isspace(pos[0])) | |
2348 | pos++; | |
2349 | next = strchr(pos, ' '); | |
2350 | while (next != NULL) { | |
2351 | next[0] = '\0'; | |
9f6445e3 | 2352 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2353 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2354 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2355 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2356 | while (isspace(next[1])) |
2357 | next++; | |
2358 | pos = &next[1]; | |
2359 | next = strchr(pos, ' '); | |
2360 | } | |
2361 | if (pos[0] != '\0') { | |
9f6445e3 | 2362 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2363 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2364 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2365 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2366 | } |
2367 | break; | |
2368 | } | |
2369 | case TK_A_ATTR: { | |
915bf0f6 | 2370 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2371 | char attr[UTIL_PATH_SIZE]; |
2372 | char value[UTIL_NAME_SIZE]; | |
fdd21be6 | 2373 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 KS |
2374 | |
2375 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2376 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2377 | attr_subst_subdir(attr, sizeof(attr)); |
2378 | ||
e20a9171 | 2379 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
9f6445e3 | 2380 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2381 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2382 | rule->rule.filename_line); |
47ef94ac | 2383 | f = fopen(attr, "we"); |
fdd21be6 | 2384 | if (f == NULL) |
56f64d95 | 2385 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
fdd21be6 ZJS |
2386 | else if (fprintf(f, "%s", value) <= 0) |
2387 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); | |
912541b0 KS |
2388 | break; |
2389 | } | |
f4cf2e5b KS |
2390 | case TK_A_SYSCTL: { |
2391 | char filename[UTIL_PATH_SIZE]; | |
2392 | char value[UTIL_NAME_SIZE]; | |
f4cf2e5b | 2393 | |
e20a9171 | 2394 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b | 2395 | sysctl_normalize(filename); |
e20a9171 | 2396 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
f4cf2e5b KS |
2397 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, |
2398 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2399 | r = sysctl_write(filename, value); | |
2400 | if (r < 0) | |
46b57b6e | 2401 | log_error_errno(r, "error writing SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2402 | break; |
2403 | } | |
83cd6b75 KS |
2404 | case TK_A_RUN_BUILTIN: |
2405 | case TK_A_RUN_PROGRAM: { | |
2406 | struct udev_list_entry *entry; | |
2407 | ||
4c701096 | 2408 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
912541b0 | 2409 | udev_list_cleanup(&event->run_list); |
9f6445e3 | 2410 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2411 | rules_str(rules, cur->key.value_off), |
2412 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2413 | rule->rule.filename_line); |
915bf0f6 | 2414 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2415 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2416 | break; |
2417 | } | |
2418 | case TK_A_GOTO: | |
2419 | if (cur->key.rule_goto == 0) | |
2420 | break; | |
2421 | cur = &rules->tokens[cur->key.rule_goto]; | |
2422 | continue; | |
2423 | case TK_END: | |
4fd6af76 | 2424 | return; |
912541b0 KS |
2425 | |
2426 | case TK_M_PARENTS_MIN: | |
2427 | case TK_M_PARENTS_MAX: | |
2428 | case TK_M_MAX: | |
2429 | case TK_UNSET: | |
9f6445e3 | 2430 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2431 | goto nomatch; |
2432 | } | |
2433 | ||
2434 | cur++; | |
2435 | continue; | |
2436 | nomatch: | |
2437 | /* fast-forward to next rule */ | |
2438 | cur = rule + rule->rule.token_count; | |
912541b0 | 2439 | } |
6880b25d | 2440 | } |
761dfddc | 2441 | |
9ec6e95b | 2442 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2443 | struct token *cur; |
2444 | struct token *rule; | |
2445 | uid_t uid = 0; | |
2446 | gid_t gid = 0; | |
2447 | mode_t mode = 0; | |
84b6ad70 TG |
2448 | _cleanup_strv_free_ char **tags = NULL; |
2449 | char **t; | |
2450 | FILE *f = NULL; | |
2451 | _cleanup_free_ char *path = NULL; | |
fdd21be6 | 2452 | int r; |
912541b0 KS |
2453 | |
2454 | if (rules->tokens == NULL) | |
84b6ad70 | 2455 | return 0; |
912541b0 KS |
2456 | |
2457 | cur = &rules->tokens[0]; | |
2458 | rule = cur; | |
2459 | for (;;) { | |
2460 | switch (cur->type) { | |
2461 | case TK_RULE: | |
2462 | /* current rule */ | |
2463 | rule = cur; | |
2464 | ||
2465 | /* skip rules without a static_node tag */ | |
2466 | if (!rule->rule.has_static_node) | |
2467 | goto next; | |
2468 | ||
2469 | uid = 0; | |
2470 | gid = 0; | |
2471 | mode = 0; | |
97b11eed | 2472 | tags = strv_free(tags); |
912541b0 KS |
2473 | break; |
2474 | case TK_A_OWNER_ID: | |
2475 | uid = cur->key.uid; | |
2476 | break; | |
2477 | case TK_A_GROUP_ID: | |
2478 | gid = cur->key.gid; | |
2479 | break; | |
2480 | case TK_A_MODE_ID: | |
2481 | mode = cur->key.mode; | |
84b6ad70 TG |
2482 | break; |
2483 | case TK_A_TAG: | |
2484 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2485 | if (r < 0) | |
2486 | goto finish; | |
2487 | ||
912541b0 KS |
2488 | break; |
2489 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2490 | char device_node[UTIL_PATH_SIZE]; |
2491 | char tags_dir[UTIL_PATH_SIZE]; | |
2492 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2493 | struct stat stats; |
2494 | ||
2495 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2496 | |
84b6ad70 | 2497 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2498 | goto next; |
d6f116a7 | 2499 | |
84b6ad70 | 2500 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2501 | if (stat(device_node, &stats) != 0) |
2502 | break; | |
2503 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2504 | break; | |
84b6ad70 | 2505 | |
d6f116a7 | 2506 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2507 | if (tags) { |
84b6ad70 TG |
2508 | STRV_FOREACH(t, tags) { |
2509 | _cleanup_free_ char *unescaped_filename = NULL; | |
2510 | ||
2511 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2512 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2513 | if (r < 0) |
2514 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2515 | |
2516 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2517 | ||
2518 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2519 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2520 | if (r < 0 && errno != EEXIST) |
2521 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2522 | tag_symlink, device_node); | |
84b6ad70 TG |
2523 | } |
2524 | } | |
2525 | ||
15a72200 TG |
2526 | /* don't touch the permissions if only the tags were set */ |
2527 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2528 | break; |
2529 | ||
912541b0 KS |
2530 | if (mode == 0) { |
2531 | if (gid > 0) | |
2532 | mode = 0660; | |
2533 | else | |
2534 | mode = 0600; | |
2535 | } | |
2536 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 | 2537 | r = chmod(device_node, mode); |
25f027c5 ZJS |
2538 | if (r < 0) |
2539 | return log_error_errno(errno, "Failed to chmod '%s' %#o: %m", | |
2540 | device_node, mode); | |
2541 | else | |
9f6445e3 | 2542 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2543 | } |
2544 | ||
2545 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 | 2546 | r = chown(device_node, uid, gid); |
25f027c5 ZJS |
2547 | if (r < 0) |
2548 | return log_error_errno(errno, "Failed to chown '%s' %u %u: %m", | |
2549 | device_node, uid, gid); | |
2550 | else | |
9f6445e3 | 2551 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2552 | } |
2553 | ||
84b6ad70 | 2554 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2555 | break; |
2556 | } | |
2557 | case TK_END: | |
84b6ad70 | 2558 | goto finish; |
912541b0 KS |
2559 | } |
2560 | ||
2561 | cur++; | |
2562 | continue; | |
761dfddc | 2563 | next: |
912541b0 KS |
2564 | /* fast-forward to next rule */ |
2565 | cur = rule + rule->rule.token_count; | |
2566 | continue; | |
2567 | } | |
84b6ad70 TG |
2568 | |
2569 | finish: | |
2570 | if (f) { | |
2571 | fflush(f); | |
2572 | fchmod(fileno(f), 0644); | |
2573 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
fdd21be6 ZJS |
2574 | unlink_noerrno("/run/udev/static_node-tags"); |
2575 | unlink_noerrno(path); | |
2576 | return -errno; | |
84b6ad70 | 2577 | } |
84b6ad70 TG |
2578 | } |
2579 | ||
fdd21be6 | 2580 | return 0; |
761dfddc | 2581 | } |