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2232cac8 | 1 | /* |
1298001e | 2 | * Copyright (C) 2003-2012 Kay Sievers <kay@vrfy.org> |
2232cac8 | 3 | * |
55e9959b KS |
4 | * This program is free software: you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
3d6d12c6 | 8 | * |
55e9959b KS |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
2232cac8 | 13 | * |
55e9959b KS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
2232cac8 GKH |
16 | */ |
17 | ||
18 | #include <stddef.h> | |
1449a55d | 19 | #include <limits.h> |
2232cac8 | 20 | #include <stdlib.h> |
6d87ee2e | 21 | #include <stdbool.h> |
2232cac8 GKH |
22 | #include <string.h> |
23 | #include <stdio.h> | |
24 | #include <fcntl.h> | |
25 | #include <ctype.h> | |
26 | #include <unistd.h> | |
27 | #include <errno.h> | |
5ee7ecfb | 28 | #include <dirent.h> |
cea61f5c | 29 | #include <fnmatch.h> |
959e8b5d | 30 | #include <time.h> |
2232cac8 | 31 | |
2232cac8 | 32 | #include "udev.h" |
9eb977db | 33 | #include "path-util.h" |
2c21044f | 34 | #include "conf-files.h" |
915bf0f6 | 35 | #include "strbuf.h" |
84b6ad70 | 36 | #include "strv.h" |
1291bc89 | 37 | #include "util.h" |
f4cf2e5b | 38 | #include "sysctl-util.h" |
2232cac8 | 39 | |
a1525d17 | 40 | #define PREALLOC_TOKEN 2048 |
c7521974 | 41 | |
4052400f | 42 | struct uid_gid { |
912541b0 KS |
43 | unsigned int name_off; |
44 | union { | |
a1525d17 KS |
45 | uid_t uid; |
46 | gid_t gid; | |
912541b0 | 47 | }; |
4052400f KS |
48 | }; |
49 | ||
2ad8416d ZJS |
50 | static const char* const rules_dirs[] = { |
51 | "/etc/udev/rules.d", | |
52 | "/run/udev/rules.d", | |
53 | UDEVLIBEXECDIR "/rules.d", | |
54 | NULL}; | |
55 | ||
4052400f | 56 | struct udev_rules { |
912541b0 | 57 | struct udev *udev; |
97f2d76d | 58 | usec_t dirs_ts_usec; |
912541b0 KS |
59 | int resolve_names; |
60 | ||
61 | /* every key in the rules file becomes a token */ | |
62 | struct token *tokens; | |
63 | unsigned int token_cur; | |
64 | unsigned int token_max; | |
65 | ||
ab06eef8 | 66 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 67 | struct strbuf *strbuf; |
912541b0 KS |
68 | |
69 | /* during rule parsing, uid/gid lookup results are cached */ | |
70 | struct uid_gid *uids; | |
71 | unsigned int uids_cur; | |
72 | unsigned int uids_max; | |
73 | struct uid_gid *gids; | |
74 | unsigned int gids_cur; | |
75 | unsigned int gids_max; | |
4052400f KS |
76 | }; |
77 | ||
915bf0f6 KS |
78 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
79 | return rules->strbuf->buf + off; | |
80 | } | |
81 | ||
82 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
83 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
84 | } | |
85 | ||
8e3ba377 | 86 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 87 | enum operation_type { |
912541b0 | 88 | OP_UNSET, |
b0f7409f | 89 | |
912541b0 KS |
90 | OP_MATCH, |
91 | OP_NOMATCH, | |
92 | OP_MATCH_MAX, | |
b0f7409f | 93 | |
912541b0 | 94 | OP_ADD, |
8e3ba377 | 95 | OP_REMOVE, |
912541b0 KS |
96 | OP_ASSIGN, |
97 | OP_ASSIGN_FINAL, | |
c7521974 KS |
98 | }; |
99 | ||
ac218d9c | 100 | enum string_glob_type { |
912541b0 | 101 | GL_UNSET, |
a1525d17 | 102 | GL_PLAIN, /* no special chars */ |
912541b0 | 103 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
104 | GL_SPLIT, /* multi-value A|B */ |
105 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
106 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
107 | }; |
108 | ||
32028733 | 109 | enum string_subst_type { |
912541b0 KS |
110 | SB_UNSET, |
111 | SB_NONE, | |
112 | SB_FORMAT, | |
113 | SB_SUBSYS, | |
32028733 KS |
114 | }; |
115 | ||
154a7b84 | 116 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 117 | enum token_type { |
912541b0 KS |
118 | TK_UNSET, |
119 | TK_RULE, | |
120 | ||
a1525d17 KS |
121 | TK_M_ACTION, /* val */ |
122 | TK_M_DEVPATH, /* val */ | |
123 | TK_M_KERNEL, /* val */ | |
124 | TK_M_DEVLINK, /* val */ | |
125 | TK_M_NAME, /* val */ | |
126 | TK_M_ENV, /* val, attr */ | |
127 | TK_M_TAG, /* val */ | |
128 | TK_M_SUBSYSTEM, /* val */ | |
129 | TK_M_DRIVER, /* val */ | |
130 | TK_M_WAITFOR, /* val */ | |
131 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 132 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
133 | |
134 | TK_M_PARENTS_MIN, | |
a1525d17 | 135 | TK_M_KERNELS, /* val */ |
912541b0 | 136 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
137 | TK_M_DRIVERS, /* val */ |
138 | TK_M_ATTRS, /* val, attr */ | |
139 | TK_M_TAGS, /* val */ | |
912541b0 KS |
140 | TK_M_PARENTS_MAX, |
141 | ||
a1525d17 | 142 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
143 | TK_M_PROGRAM, /* val */ |
144 | TK_M_IMPORT_FILE, /* val */ | |
145 | TK_M_IMPORT_PROG, /* val */ | |
146 | TK_M_IMPORT_BUILTIN, /* val */ | |
147 | TK_M_IMPORT_DB, /* val */ | |
148 | TK_M_IMPORT_CMDLINE, /* val */ | |
149 | TK_M_IMPORT_PARENT, /* val */ | |
150 | TK_M_RESULT, /* val */ | |
912541b0 KS |
151 | TK_M_MAX, |
152 | ||
153 | TK_A_STRING_ESCAPE_NONE, | |
154 | TK_A_STRING_ESCAPE_REPLACE, | |
155 | TK_A_DB_PERSIST, | |
a1525d17 KS |
156 | TK_A_INOTIFY_WATCH, /* int */ |
157 | TK_A_DEVLINK_PRIO, /* int */ | |
158 | TK_A_OWNER, /* val */ | |
159 | TK_A_GROUP, /* val */ | |
160 | TK_A_MODE, /* val */ | |
161 | TK_A_OWNER_ID, /* uid_t */ | |
162 | TK_A_GROUP_ID, /* gid_t */ | |
163 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 164 | TK_A_TAG, /* val */ |
a1525d17 | 165 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 166 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 167 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
168 | TK_A_NAME, /* val */ |
169 | TK_A_DEVLINK, /* val */ | |
170 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 171 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
172 | TK_A_RUN_BUILTIN, /* val, bool */ |
173 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 174 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
175 | |
176 | TK_END, | |
c7521974 KS |
177 | }; |
178 | ||
3f3aa9f5 | 179 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 180 | struct token { |
912541b0 KS |
181 | union { |
182 | unsigned char type; /* same in rule and key */ | |
183 | struct { | |
184 | enum token_type type:8; | |
185 | bool can_set_name:1; | |
186 | bool has_static_node:1; | |
187 | unsigned int unused:6; | |
188 | unsigned short token_count; | |
189 | unsigned int label_off; | |
190 | unsigned short filename_off; | |
191 | unsigned short filename_line; | |
192 | } rule; | |
193 | struct { | |
194 | enum token_type type:8; | |
195 | enum operation_type op:8; | |
196 | enum string_glob_type glob:8; | |
197 | enum string_subst_type subst:4; | |
198 | enum string_subst_type attrsubst:4; | |
199 | unsigned int value_off; | |
200 | union { | |
201 | unsigned int attr_off; | |
912541b0 KS |
202 | unsigned int rule_goto; |
203 | mode_t mode; | |
204 | uid_t uid; | |
205 | gid_t gid; | |
206 | int devlink_prio; | |
912541b0 KS |
207 | int watch; |
208 | enum udev_builtin_cmd builtin_cmd; | |
209 | }; | |
210 | } key; | |
211 | }; | |
4052400f KS |
212 | }; |
213 | ||
912541b0 | 214 | #define MAX_TK 64 |
4052400f | 215 | struct rule_tmp { |
912541b0 KS |
216 | struct udev_rules *rules; |
217 | struct token rule; | |
218 | struct token token[MAX_TK]; | |
219 | unsigned int token_cur; | |
4052400f KS |
220 | }; |
221 | ||
baa30fbc | 222 | #ifdef DEBUG |
9ec6e95b | 223 | static const char *operation_str(enum operation_type type) { |
912541b0 | 224 | static const char *operation_strs[] = { |
a1525d17 KS |
225 | [OP_UNSET] = "UNSET", |
226 | [OP_MATCH] = "match", | |
227 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
228 | [OP_MATCH_MAX] = "MATCH_MAX", |
229 | ||
a1525d17 | 230 | [OP_ADD] = "add", |
8e3ba377 | 231 | [OP_REMOVE] = "remove", |
a1525d17 KS |
232 | [OP_ASSIGN] = "assign", |
233 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
234 | } ; |
235 | ||
236 | return operation_strs[type]; | |
5d6a1fa6 | 237 | } |
4052400f | 238 | |
9ec6e95b | 239 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 240 | static const char *string_glob_strs[] = { |
a1525d17 KS |
241 | [GL_UNSET] = "UNSET", |
242 | [GL_PLAIN] = "plain", | |
243 | [GL_GLOB] = "glob", | |
244 | [GL_SPLIT] = "split", | |
245 | [GL_SPLIT_GLOB] = "split-glob", | |
246 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
247 | }; |
248 | ||
249 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
250 | } |
251 | ||
9ec6e95b | 252 | static const char *token_str(enum token_type type) { |
912541b0 | 253 | static const char *token_strs[] = { |
a1525d17 KS |
254 | [TK_UNSET] = "UNSET", |
255 | [TK_RULE] = "RULE", | |
912541b0 | 256 | |
a1525d17 | 257 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 258 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 259 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 260 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
261 | [TK_M_NAME] = "M NAME", |
262 | [TK_M_ENV] = "M ENV", | |
263 | [TK_M_TAG] = "M TAG", | |
264 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
265 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 266 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 267 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 268 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 269 | |
a1525d17 | 270 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 271 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 272 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 273 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
274 | [TK_M_ATTRS] = "M ATTRS", |
275 | [TK_M_TAGS] = "M TAGS", | |
276 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 277 | |
a1525d17 | 278 | [TK_M_TEST] = "M TEST", |
912541b0 | 279 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
280 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
281 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
282 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
283 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
284 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
285 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
286 | [TK_M_RESULT] = "M RESULT", | |
287 | [TK_M_MAX] = "M MAX", | |
288 | ||
289 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
290 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
291 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
292 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
293 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
294 | [TK_A_OWNER] = "A OWNER", | |
295 | [TK_A_GROUP] = "A GROUP", | |
296 | [TK_A_MODE] = "A MODE", | |
297 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
298 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
299 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 300 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 301 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
302 | [TK_A_ENV] = "A ENV", |
303 | [TK_A_TAG] = "A ENV", | |
304 | [TK_A_NAME] = "A NAME", | |
912541b0 | 305 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 306 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 307 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
308 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
309 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 310 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 311 | |
a1525d17 | 312 | [TK_END] = "END", |
912541b0 KS |
313 | }; |
314 | ||
315 | return token_strs[type]; | |
5d6a1fa6 | 316 | } |
c7521974 | 317 | |
9ec6e95b | 318 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
319 | enum token_type type = token->type; |
320 | enum operation_type op = token->key.op; | |
321 | enum string_glob_type glob = token->key.glob; | |
915bf0f6 | 322 | const char *value = str(rules, token->key.value_off); |
912541b0 KS |
323 | const char *attr = &rules->buf[token->key.attr_off]; |
324 | ||
325 | switch (type) { | |
326 | case TK_RULE: | |
327 | { | |
328 | const char *tks_ptr = (char *)rules->tokens; | |
329 | const char *tk_ptr = (char *)token; | |
330 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
331 | ||
9f6445e3 | 332 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
baa30fbc KS |
333 | &rules->buf[token->rule.filename_off], token->rule.filename_line, |
334 | idx, token->rule.token_count, | |
335 | &rules->buf[token->rule.label_off]); | |
912541b0 KS |
336 | break; |
337 | } | |
338 | case TK_M_ACTION: | |
339 | case TK_M_DEVPATH: | |
340 | case TK_M_KERNEL: | |
341 | case TK_M_SUBSYSTEM: | |
342 | case TK_M_DRIVER: | |
343 | case TK_M_WAITFOR: | |
344 | case TK_M_DEVLINK: | |
345 | case TK_M_NAME: | |
346 | case TK_M_KERNELS: | |
347 | case TK_M_SUBSYSTEMS: | |
348 | case TK_M_DRIVERS: | |
349 | case TK_M_TAGS: | |
350 | case TK_M_PROGRAM: | |
351 | case TK_M_IMPORT_FILE: | |
352 | case TK_M_IMPORT_PROG: | |
353 | case TK_M_IMPORT_DB: | |
354 | case TK_M_IMPORT_CMDLINE: | |
355 | case TK_M_IMPORT_PARENT: | |
356 | case TK_M_RESULT: | |
357 | case TK_A_NAME: | |
358 | case TK_A_DEVLINK: | |
359 | case TK_A_OWNER: | |
360 | case TK_A_GROUP: | |
361 | case TK_A_MODE: | |
83cd6b75 KS |
362 | case TK_A_RUN_BUILTIN: |
363 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 364 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 365 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
366 | break; |
367 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 368 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
369 | break; |
370 | case TK_M_ATTR: | |
f4cf2e5b | 371 | case TK_M_SYSCTL: |
912541b0 KS |
372 | case TK_M_ATTRS: |
373 | case TK_M_ENV: | |
374 | case TK_A_ATTR: | |
f4cf2e5b | 375 | case TK_A_SYSCTL: |
912541b0 | 376 | case TK_A_ENV: |
9f6445e3 | 377 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 378 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
379 | break; |
380 | case TK_M_TAG: | |
381 | case TK_A_TAG: | |
9f6445e3 | 382 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
383 | break; |
384 | case TK_A_STRING_ESCAPE_NONE: | |
385 | case TK_A_STRING_ESCAPE_REPLACE: | |
386 | case TK_A_DB_PERSIST: | |
9f6445e3 | 387 | log_debug("%s", token_str(type)); |
912541b0 KS |
388 | break; |
389 | case TK_M_TEST: | |
9f6445e3 | 390 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 391 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
392 | break; |
393 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 394 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
395 | break; |
396 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 397 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
398 | break; |
399 | case TK_A_OWNER_ID: | |
9f6445e3 | 400 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
401 | break; |
402 | case TK_A_GROUP_ID: | |
9f6445e3 | 403 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
404 | break; |
405 | case TK_A_MODE_ID: | |
9f6445e3 | 406 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
407 | break; |
408 | case TK_A_STATIC_NODE: | |
9f6445e3 | 409 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 410 | break; |
c26547d6 | 411 | case TK_A_SECLABEL: |
9f6445e3 | 412 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 413 | break; |
912541b0 | 414 | case TK_A_GOTO: |
9f6445e3 | 415 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
416 | break; |
417 | case TK_END: | |
9f6445e3 | 418 | log_debug("* %s", token_str(type)); |
912541b0 KS |
419 | break; |
420 | case TK_M_PARENTS_MIN: | |
421 | case TK_M_PARENTS_MAX: | |
422 | case TK_M_MAX: | |
423 | case TK_UNSET: | |
9f6445e3 | 424 | log_debug("unknown type %u", type); |
912541b0 KS |
425 | break; |
426 | } | |
4052400f | 427 | } |
154a7b84 | 428 | |
9ec6e95b | 429 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
430 | unsigned int i; |
431 | ||
9f6445e3 | 432 | log_debug("dumping %u (%zu bytes) tokens, %u (%zu bytes) strings", |
baa30fbc KS |
433 | rules->token_cur, |
434 | rules->token_cur * sizeof(struct token), | |
435 | rules->buf_count, | |
436 | rules->buf_cur); | |
f168c273 | 437 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 438 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
439 | } |
440 | #else | |
4052400f KS |
441 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
442 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 443 | #endif /* DEBUG */ |
c7521974 | 444 | |
9ec6e95b | 445 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
446 | /* grow buffer if needed */ |
447 | if (rules->token_cur+1 >= rules->token_max) { | |
448 | struct token *tokens; | |
449 | unsigned int add; | |
450 | ||
451 | /* double the buffer size */ | |
452 | add = rules->token_max; | |
453 | if (add < 8) | |
454 | add = 8; | |
455 | ||
456 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
457 | if (tokens == NULL) | |
458 | return -1; | |
912541b0 KS |
459 | rules->tokens = tokens; |
460 | rules->token_max += add; | |
461 | } | |
462 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
463 | rules->token_cur++; | |
464 | return 0; | |
c7521974 | 465 | } |
a27cd06c | 466 | |
9ec6e95b | 467 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 468 | unsigned int i; |
23bf8dd7 | 469 | uid_t uid = 0; |
912541b0 | 470 | unsigned int off; |
23bf8dd7 | 471 | int r; |
912541b0 KS |
472 | |
473 | /* lookup, if we know it already */ | |
474 | for (i = 0; i < rules->uids_cur; i++) { | |
475 | off = rules->uids[i].name_off; | |
915bf0f6 | 476 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 477 | uid = rules->uids[i].uid; |
912541b0 KS |
478 | return uid; |
479 | } | |
480 | } | |
23bf8dd7 TG |
481 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
482 | if (r < 0) { | |
483 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 484 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 485 | else |
279d3c9c | 486 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 | 487 | } |
912541b0 KS |
488 | |
489 | /* grow buffer if needed */ | |
490 | if (rules->uids_cur+1 >= rules->uids_max) { | |
491 | struct uid_gid *uids; | |
492 | unsigned int add; | |
493 | ||
494 | /* double the buffer size */ | |
495 | add = rules->uids_max; | |
496 | if (add < 1) | |
497 | add = 8; | |
498 | ||
499 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
500 | if (uids == NULL) | |
501 | return uid; | |
912541b0 KS |
502 | rules->uids = uids; |
503 | rules->uids_max += add; | |
504 | } | |
505 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 506 | off = rules_add_string(rules, owner); |
912541b0 KS |
507 | if (off <= 0) |
508 | return uid; | |
509 | rules->uids[rules->uids_cur].name_off = off; | |
510 | rules->uids_cur++; | |
511 | return uid; | |
154a7b84 KS |
512 | } |
513 | ||
9ec6e95b | 514 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 515 | unsigned int i; |
23bf8dd7 | 516 | gid_t gid = 0; |
912541b0 | 517 | unsigned int off; |
23bf8dd7 | 518 | int r; |
912541b0 KS |
519 | |
520 | /* lookup, if we know it already */ | |
521 | for (i = 0; i < rules->gids_cur; i++) { | |
522 | off = rules->gids[i].name_off; | |
915bf0f6 | 523 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 524 | gid = rules->gids[i].gid; |
912541b0 KS |
525 | return gid; |
526 | } | |
527 | } | |
23bf8dd7 TG |
528 | r = get_group_creds(&group, &gid); |
529 | if (r < 0) { | |
530 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 531 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 532 | else |
279d3c9c | 533 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 | 534 | } |
912541b0 KS |
535 | |
536 | /* grow buffer if needed */ | |
537 | if (rules->gids_cur+1 >= rules->gids_max) { | |
538 | struct uid_gid *gids; | |
539 | unsigned int add; | |
540 | ||
541 | /* double the buffer size */ | |
542 | add = rules->gids_max; | |
543 | if (add < 1) | |
544 | add = 8; | |
545 | ||
546 | gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); | |
547 | if (gids == NULL) | |
548 | return gid; | |
912541b0 KS |
549 | rules->gids = gids; |
550 | rules->gids_max += add; | |
551 | } | |
552 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 553 | off = rules_add_string(rules, group); |
912541b0 KS |
554 | if (off <= 0) |
555 | return gid; | |
556 | rules->gids[rules->gids_cur].name_off = off; | |
557 | rules->gids_cur++; | |
558 | return gid; | |
154a7b84 KS |
559 | } |
560 | ||
9ec6e95b | 561 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
562 | char *key; |
563 | char *val; | |
564 | size_t len; | |
565 | ||
566 | /* find key */ | |
567 | key = line; | |
568 | while (isspace(key[0])) | |
569 | key++; | |
570 | ||
571 | /* comment or empty line */ | |
572 | if (key[0] == '#' || key[0] == '\0') | |
573 | return -1; | |
574 | ||
575 | /* split key/value */ | |
576 | val = strchr(key, '='); | |
577 | if (val == NULL) | |
578 | return -1; | |
579 | val[0] = '\0'; | |
580 | val++; | |
581 | ||
582 | /* find value */ | |
583 | while (isspace(val[0])) | |
584 | val++; | |
585 | ||
586 | /* terminate key */ | |
587 | len = strlen(key); | |
588 | if (len == 0) | |
589 | return -1; | |
590 | while (isspace(key[len-1])) | |
591 | len--; | |
592 | key[len] = '\0'; | |
593 | ||
594 | /* terminate value */ | |
595 | len = strlen(val); | |
596 | if (len == 0) | |
597 | return -1; | |
598 | while (isspace(val[len-1])) | |
599 | len--; | |
600 | val[len] = '\0'; | |
601 | ||
602 | if (len == 0) | |
603 | return -1; | |
604 | ||
605 | /* unquote */ | |
606 | if (val[0] == '"' || val[0] == '\'') { | |
607 | if (val[len-1] != val[0]) { | |
9f6445e3 | 608 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
609 | return -1; |
610 | } | |
611 | val[len-1] = '\0'; | |
612 | val++; | |
613 | } | |
614 | ||
df546eb5 | 615 | udev_device_add_property(dev, key, val); |
0aa5b4d1 | 616 | |
912541b0 | 617 | return 0; |
be4bedd1 KS |
618 | } |
619 | ||
9ec6e95b | 620 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
621 | FILE *f; |
622 | char line[UTIL_LINE_SIZE]; | |
623 | ||
47ef94ac | 624 | f = fopen(filename, "re"); |
912541b0 KS |
625 | if (f == NULL) |
626 | return -1; | |
627 | while (fgets(line, sizeof(line), f) != NULL) | |
628 | import_property_from_string(dev, line); | |
629 | fclose(f); | |
630 | return 0; | |
bd0ed2ff KS |
631 | } |
632 | ||
dd5eddd2 KS |
633 | static int import_program_into_properties(struct udev_event *event, |
634 | usec_t timeout_usec, | |
67117413 | 635 | usec_t timeout_warn_usec, |
8314de1d | 636 | const char *program) { |
912541b0 KS |
637 | struct udev_device *dev = event->dev; |
638 | char **envp; | |
639 | char result[UTIL_LINE_SIZE]; | |
640 | char *line; | |
641 | int err; | |
642 | ||
643 | envp = udev_device_get_properties_envp(dev); | |
53318514 | 644 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, envp, result, sizeof(result)); |
912541b0 KS |
645 | if (err < 0) |
646 | return err; | |
647 | ||
648 | line = result; | |
649 | while (line != NULL) { | |
650 | char *pos; | |
651 | ||
652 | pos = strchr(line, '\n'); | |
653 | if (pos != NULL) { | |
654 | pos[0] = '\0'; | |
655 | pos = &pos[1]; | |
656 | } | |
657 | import_property_from_string(dev, line); | |
658 | line = pos; | |
659 | } | |
660 | return 0; | |
319c6700 KS |
661 | } |
662 | ||
9ec6e95b | 663 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
664 | struct udev_device *dev_parent; |
665 | struct udev_list_entry *list_entry; | |
666 | ||
3b64e4d4 TG |
667 | assert(dev); |
668 | assert(filter); | |
669 | ||
912541b0 KS |
670 | dev_parent = udev_device_get_parent(dev); |
671 | if (dev_parent == NULL) | |
672 | return -1; | |
673 | ||
912541b0 KS |
674 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
675 | const char *key = udev_list_entry_get_name(list_entry); | |
676 | const char *val = udev_list_entry_get_value(list_entry); | |
677 | ||
678 | if (fnmatch(filter, key, 0) == 0) { | |
df546eb5 | 679 | udev_device_add_property(dev, key, val); |
912541b0 KS |
680 | } |
681 | } | |
682 | return 0; | |
e2ecb34f KS |
683 | } |
684 | ||
912541b0 | 685 | #define WAIT_LOOP_PER_SECOND 50 |
9ec6e95b | 686 | static int wait_for_file(struct udev_device *dev, const char *file, int timeout) { |
912541b0 KS |
687 | char filepath[UTIL_PATH_SIZE]; |
688 | char devicepath[UTIL_PATH_SIZE]; | |
689 | struct stat stats; | |
690 | int loop = timeout * WAIT_LOOP_PER_SECOND; | |
691 | ||
692 | /* a relative path is a device attribute */ | |
693 | devicepath[0] = '\0'; | |
694 | if (file[0] != '/') { | |
d5a89d7d KS |
695 | strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL); |
696 | strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL); | |
912541b0 KS |
697 | file = filepath; |
698 | } | |
699 | ||
912541b0 KS |
700 | while (--loop) { |
701 | const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND }; | |
702 | ||
703 | /* lookup file */ | |
704 | if (stat(file, &stats) == 0) { | |
9f6445e3 | 705 | log_debug("file '%s' appeared after %i loops", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1); |
912541b0 KS |
706 | return 0; |
707 | } | |
708 | /* make sure, the device did not disappear in the meantime */ | |
709 | if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) { | |
9f6445e3 | 710 | log_debug("device disappeared while waiting for '%s'", file); |
912541b0 KS |
711 | return -2; |
712 | } | |
9f6445e3 | 713 | log_debug("wait for '%s' for %i mseconds", file, 1000 / WAIT_LOOP_PER_SECOND); |
912541b0 KS |
714 | nanosleep(&duration, NULL); |
715 | } | |
9f6445e3 | 716 | log_debug("waiting for '%s' failed", file); |
912541b0 | 717 | return -1; |
b2fe4b9a KS |
718 | } |
719 | ||
9ec6e95b | 720 | static int attr_subst_subdir(char *attr, size_t len) { |
912541b0 KS |
721 | bool found = false; |
722 | ||
723 | if (strstr(attr, "/*/")) { | |
724 | char *pos; | |
725 | char dirname[UTIL_PATH_SIZE]; | |
726 | const char *tail; | |
727 | DIR *dir; | |
728 | ||
d5a89d7d | 729 | strscpy(dirname, sizeof(dirname), attr); |
912541b0 KS |
730 | pos = strstr(dirname, "/*/"); |
731 | if (pos == NULL) | |
732 | return -1; | |
733 | pos[0] = '\0'; | |
734 | tail = &pos[2]; | |
735 | dir = opendir(dirname); | |
736 | if (dir != NULL) { | |
737 | struct dirent *dent; | |
738 | ||
739 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { | |
740 | struct stat stats; | |
741 | ||
742 | if (dent->d_name[0] == '.') | |
743 | continue; | |
d5a89d7d | 744 | strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); |
912541b0 KS |
745 | if (stat(attr, &stats) == 0) { |
746 | found = true; | |
747 | break; | |
748 | } | |
749 | } | |
750 | closedir(dir); | |
751 | } | |
752 | } | |
753 | ||
754 | return found; | |
0ea5e96e KS |
755 | } |
756 | ||
9ec6e95b | 757 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
758 | char *linepos; |
759 | char *temp; | |
760 | ||
761 | linepos = *line; | |
762 | if (linepos == NULL || linepos[0] == '\0') | |
763 | return -1; | |
764 | ||
765 | /* skip whitespace */ | |
766 | while (isspace(linepos[0]) || linepos[0] == ',') | |
767 | linepos++; | |
768 | ||
769 | /* get the key */ | |
770 | if (linepos[0] == '\0') | |
771 | return -1; | |
772 | *key = linepos; | |
773 | ||
774 | for (;;) { | |
775 | linepos++; | |
776 | if (linepos[0] == '\0') | |
777 | return -1; | |
778 | if (isspace(linepos[0])) | |
779 | break; | |
780 | if (linepos[0] == '=') | |
781 | break; | |
8e3ba377 | 782 | if ((linepos[0] == '+') || (linepos[0] == '-') || (linepos[0] == '!') || (linepos[0] == ':')) |
912541b0 KS |
783 | if (linepos[1] == '=') |
784 | break; | |
785 | } | |
786 | ||
787 | /* remember end of key */ | |
788 | temp = linepos; | |
789 | ||
790 | /* skip whitespace after key */ | |
791 | while (isspace(linepos[0])) | |
792 | linepos++; | |
793 | if (linepos[0] == '\0') | |
794 | return -1; | |
795 | ||
796 | /* get operation type */ | |
797 | if (linepos[0] == '=' && linepos[1] == '=') { | |
798 | *op = OP_MATCH; | |
799 | linepos += 2; | |
800 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
801 | *op = OP_NOMATCH; | |
802 | linepos += 2; | |
803 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
804 | *op = OP_ADD; | |
805 | linepos += 2; | |
8e3ba377 DH |
806 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
807 | *op = OP_REMOVE; | |
808 | linepos += 2; | |
912541b0 KS |
809 | } else if (linepos[0] == '=') { |
810 | *op = OP_ASSIGN; | |
811 | linepos++; | |
812 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
813 | *op = OP_ASSIGN_FINAL; | |
814 | linepos += 2; | |
815 | } else | |
816 | return -1; | |
817 | ||
818 | /* terminate key */ | |
819 | temp[0] = '\0'; | |
820 | ||
821 | /* skip whitespace after operator */ | |
822 | while (isspace(linepos[0])) | |
823 | linepos++; | |
824 | if (linepos[0] == '\0') | |
825 | return -1; | |
826 | ||
827 | /* get the value */ | |
828 | if (linepos[0] == '"') | |
829 | linepos++; | |
830 | else | |
831 | return -1; | |
832 | *value = linepos; | |
833 | ||
834 | /* terminate */ | |
835 | temp = strchr(linepos, '"'); | |
836 | if (!temp) | |
837 | return -1; | |
838 | temp[0] = '\0'; | |
839 | temp++; | |
912541b0 KS |
840 | |
841 | /* move line to next key */ | |
842 | *line = temp; | |
843 | return 0; | |
6880b25d | 844 | } |
95776dc6 | 845 | |
6880b25d | 846 | /* extract possible KEY{attr} */ |
9ec6e95b | 847 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
848 | char *pos; |
849 | char *attr; | |
850 | ||
851 | attr = strchr(str, '{'); | |
852 | if (attr != NULL) { | |
853 | attr++; | |
854 | pos = strchr(attr, '}'); | |
855 | if (pos == NULL) { | |
9f6445e3 | 856 | log_error("missing closing brace for format"); |
912541b0 KS |
857 | return NULL; |
858 | } | |
859 | pos[0] = '\0'; | |
912541b0 KS |
860 | return attr; |
861 | } | |
862 | return NULL; | |
6880b25d | 863 | } |
95776dc6 | 864 | |
0ef254d5 | 865 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
912541b0 | 866 | enum operation_type op, |
9ec6e95b | 867 | const char *value, const void *data) { |
912541b0 KS |
868 | struct token *token = &rule_tmp->token[rule_tmp->token_cur]; |
869 | const char *attr = NULL; | |
870 | ||
29804cc1 | 871 | memzero(token, sizeof(struct token)); |
912541b0 KS |
872 | |
873 | switch (type) { | |
874 | case TK_M_ACTION: | |
875 | case TK_M_DEVPATH: | |
876 | case TK_M_KERNEL: | |
877 | case TK_M_SUBSYSTEM: | |
878 | case TK_M_DRIVER: | |
879 | case TK_M_WAITFOR: | |
880 | case TK_M_DEVLINK: | |
881 | case TK_M_NAME: | |
882 | case TK_M_KERNELS: | |
883 | case TK_M_SUBSYSTEMS: | |
884 | case TK_M_DRIVERS: | |
885 | case TK_M_TAGS: | |
886 | case TK_M_PROGRAM: | |
887 | case TK_M_IMPORT_FILE: | |
888 | case TK_M_IMPORT_PROG: | |
889 | case TK_M_IMPORT_DB: | |
890 | case TK_M_IMPORT_CMDLINE: | |
891 | case TK_M_IMPORT_PARENT: | |
892 | case TK_M_RESULT: | |
893 | case TK_A_OWNER: | |
894 | case TK_A_GROUP: | |
895 | case TK_A_MODE: | |
8a173387 | 896 | case TK_A_DEVLINK: |
912541b0 KS |
897 | case TK_A_NAME: |
898 | case TK_A_GOTO: | |
899 | case TK_M_TAG: | |
900 | case TK_A_TAG: | |
d6f116a7 | 901 | case TK_A_STATIC_NODE: |
915bf0f6 | 902 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
903 | break; |
904 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 905 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
906 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
907 | break; | |
908 | case TK_M_ENV: | |
909 | case TK_M_ATTR: | |
f4cf2e5b | 910 | case TK_M_SYSCTL: |
912541b0 KS |
911 | case TK_M_ATTRS: |
912 | case TK_A_ATTR: | |
f4cf2e5b | 913 | case TK_A_SYSCTL: |
912541b0 | 914 | case TK_A_ENV: |
c26547d6 | 915 | case TK_A_SECLABEL: |
912541b0 | 916 | attr = data; |
915bf0f6 KS |
917 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
918 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 919 | break; |
912541b0 | 920 | case TK_M_TEST: |
915bf0f6 | 921 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
922 | if (data != NULL) |
923 | token->key.mode = *(mode_t *)data; | |
924 | break; | |
925 | case TK_A_STRING_ESCAPE_NONE: | |
926 | case TK_A_STRING_ESCAPE_REPLACE: | |
927 | case TK_A_DB_PERSIST: | |
928 | break; | |
83cd6b75 | 929 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 930 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 931 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 932 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
933 | break; |
934 | case TK_A_INOTIFY_WATCH: | |
935 | case TK_A_DEVLINK_PRIO: | |
936 | token->key.devlink_prio = *(int *)data; | |
937 | break; | |
938 | case TK_A_OWNER_ID: | |
939 | token->key.uid = *(uid_t *)data; | |
940 | break; | |
941 | case TK_A_GROUP_ID: | |
942 | token->key.gid = *(gid_t *)data; | |
943 | break; | |
944 | case TK_A_MODE_ID: | |
945 | token->key.mode = *(mode_t *)data; | |
946 | break; | |
912541b0 KS |
947 | case TK_RULE: |
948 | case TK_M_PARENTS_MIN: | |
949 | case TK_M_PARENTS_MAX: | |
950 | case TK_M_MAX: | |
951 | case TK_END: | |
952 | case TK_UNSET: | |
9f6445e3 | 953 | log_error("wrong type %u", type); |
912541b0 KS |
954 | return -1; |
955 | } | |
956 | ||
957 | if (value != NULL && type < TK_M_MAX) { | |
958 | /* check if we need to split or call fnmatch() while matching rules */ | |
959 | enum string_glob_type glob; | |
960 | int has_split; | |
961 | int has_glob; | |
962 | ||
963 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 964 | has_glob = string_is_glob(value); |
912541b0 KS |
965 | if (has_split && has_glob) { |
966 | glob = GL_SPLIT_GLOB; | |
967 | } else if (has_split) { | |
968 | glob = GL_SPLIT; | |
969 | } else if (has_glob) { | |
33502ffe | 970 | if (streq(value, "?*")) |
912541b0 KS |
971 | glob = GL_SOMETHING; |
972 | else | |
973 | glob = GL_GLOB; | |
974 | } else { | |
975 | glob = GL_PLAIN; | |
976 | } | |
977 | token->key.glob = glob; | |
978 | } | |
979 | ||
980 | if (value != NULL && type > TK_M_MAX) { | |
981 | /* check if assigned value has substitution chars */ | |
982 | if (value[0] == '[') | |
983 | token->key.subst = SB_SUBSYS; | |
984 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
985 | token->key.subst = SB_FORMAT; | |
986 | else | |
987 | token->key.subst = SB_NONE; | |
988 | } | |
989 | ||
990 | if (attr != NULL) { | |
d6f116a7 | 991 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
992 | if (attr[0] == '[') |
993 | token->key.attrsubst = SB_SUBSYS; | |
994 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
995 | token->key.attrsubst = SB_FORMAT; | |
996 | else | |
997 | token->key.attrsubst = SB_NONE; | |
998 | } | |
999 | ||
1000 | token->key.type = type; | |
1001 | token->key.op = op; | |
1002 | rule_tmp->token_cur++; | |
8fef0ff2 | 1003 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) { |
9f6445e3 | 1004 | log_error("temporary rule array too small"); |
912541b0 KS |
1005 | return -1; |
1006 | } | |
1007 | return 0; | |
6880b25d | 1008 | } |
e57e7bc1 | 1009 | |
9ec6e95b | 1010 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
1011 | unsigned int i; |
1012 | unsigned int start = 0; | |
1013 | unsigned int end = rule_tmp->token_cur; | |
1014 | ||
1015 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
1016 | enum token_type next_val = TK_UNSET; | |
1017 | unsigned int next_idx = 0; | |
1018 | unsigned int j; | |
1019 | ||
1020 | /* find smallest value */ | |
1021 | for (j = start; j < end; j++) { | |
1022 | if (rule_tmp->token[j].type == TK_UNSET) | |
1023 | continue; | |
1024 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
1025 | next_val = rule_tmp->token[j].type; | |
1026 | next_idx = j; | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | /* add token and mark done */ | |
1031 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
1032 | return -1; | |
1033 | rule_tmp->token[next_idx].type = TK_UNSET; | |
1034 | ||
1035 | /* shrink range */ | |
1036 | if (next_idx == start) | |
1037 | start++; | |
1038 | if (next_idx+1 == end) | |
1039 | end--; | |
1040 | } | |
1041 | return 0; | |
724257d9 GKH |
1042 | } |
1043 | ||
6880b25d | 1044 | static int add_rule(struct udev_rules *rules, char *line, |
9ec6e95b | 1045 | const char *filename, unsigned int filename_off, unsigned int lineno) { |
912541b0 | 1046 | char *linepos; |
04a9d3a0 | 1047 | const char *attr; |
84198c18 TG |
1048 | struct rule_tmp rule_tmp = { |
1049 | .rules = rules, | |
1050 | .rule.type = TK_RULE, | |
1051 | }; | |
912541b0 | 1052 | |
775f8b3c KS |
1053 | /* the offset in the rule is limited to unsigned short */ |
1054 | if (filename_off < USHRT_MAX) | |
1055 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1056 | rule_tmp.rule.rule.filename_line = lineno; |
1057 | ||
1058 | linepos = line; | |
1059 | for (;;) { | |
1060 | char *key; | |
1061 | char *value; | |
1062 | enum operation_type op; | |
1063 | ||
e736cf35 | 1064 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1065 | /* Avoid erroring on trailing whitespace. This is probably rare |
1066 | * so save the work for the error case instead of always trying | |
1067 | * to strip the trailing whitespace with strstrip(). */ | |
1068 | while (isblank(*linepos)) | |
1069 | linepos++; | |
1070 | ||
e736cf35 DR |
1071 | /* If we aren't at the end of the line, this is a parsing error. |
1072 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1073 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1074 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1075 | _cleanup_free_ char *tmp; |
1076 | ||
1077 | tmp = cescape(buf); | |
ff49bc32 | 1078 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1079 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1080 | if (*linepos == '#') |
75716dd8 | 1081 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1082 | } |
912541b0 | 1083 | break; |
e736cf35 | 1084 | } |
912541b0 | 1085 | |
33502ffe | 1086 | if (streq(key, "ACTION")) { |
912541b0 | 1087 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1088 | log_error("invalid ACTION operation"); |
912541b0 KS |
1089 | goto invalid; |
1090 | } | |
1091 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); | |
1092 | continue; | |
1093 | } | |
1094 | ||
33502ffe | 1095 | if (streq(key, "DEVPATH")) { |
912541b0 | 1096 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1097 | log_error("invalid DEVPATH operation"); |
912541b0 KS |
1098 | goto invalid; |
1099 | } | |
1100 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); | |
1101 | continue; | |
1102 | } | |
1103 | ||
33502ffe | 1104 | if (streq(key, "KERNEL")) { |
912541b0 | 1105 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1106 | log_error("invalid KERNEL operation"); |
912541b0 KS |
1107 | goto invalid; |
1108 | } | |
1109 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); | |
1110 | continue; | |
1111 | } | |
1112 | ||
33502ffe | 1113 | if (streq(key, "SUBSYSTEM")) { |
912541b0 | 1114 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1115 | log_error("invalid SUBSYSTEM operation"); |
912541b0 KS |
1116 | goto invalid; |
1117 | } | |
1118 | /* bus, class, subsystem events should all be the same */ | |
33502ffe KS |
1119 | if (streq(value, "subsystem") || |
1120 | streq(value, "bus") || | |
1121 | streq(value, "class")) { | |
1122 | if (streq(value, "bus") || streq(value, "class")) | |
9f6445e3 | 1123 | log_error("'%s' must be specified as 'subsystem' " |
912541b0 KS |
1124 | "please fix it in %s:%u", value, filename, lineno); |
1125 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); | |
1126 | } else | |
1127 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
1128 | continue; | |
1129 | } | |
1130 | ||
33502ffe | 1131 | if (streq(key, "DRIVER")) { |
912541b0 | 1132 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1133 | log_error("invalid DRIVER operation"); |
912541b0 KS |
1134 | goto invalid; |
1135 | } | |
1136 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); | |
1137 | continue; | |
1138 | } | |
1139 | ||
33502ffe | 1140 | if (startswith(key, "ATTR{")) { |
f8294e41 | 1141 | attr = get_key_attribute(rules->udev, key + strlen("ATTR")); |
912541b0 | 1142 | if (attr == NULL) { |
9f6445e3 | 1143 | log_error("error parsing ATTR attribute"); |
912541b0 KS |
1144 | goto invalid; |
1145 | } | |
8e3ba377 DH |
1146 | if (op == OP_REMOVE) { |
1147 | log_error("invalid ATTR operation"); | |
1148 | goto invalid; | |
1149 | } | |
f4cf2e5b | 1150 | if (op < OP_MATCH_MAX) |
912541b0 | 1151 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1152 | else |
912541b0 | 1153 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b KS |
1154 | continue; |
1155 | } | |
1156 | ||
1157 | if (startswith(key, "SYSCTL{")) { | |
1158 | attr = get_key_attribute(rules->udev, key + strlen("SYSCTL")); | |
1159 | if (attr == NULL) { | |
1160 | log_error("error parsing SYSCTL attribute"); | |
1161 | goto invalid; | |
1162 | } | |
1163 | if (op == OP_REMOVE) { | |
1164 | log_error("invalid SYSCTL operation"); | |
1165 | goto invalid; | |
912541b0 | 1166 | } |
f4cf2e5b KS |
1167 | if (op < OP_MATCH_MAX) |
1168 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1169 | else | |
1170 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 KS |
1171 | continue; |
1172 | } | |
1173 | ||
c26547d6 | 1174 | if (startswith(key, "SECLABEL{")) { |
f8294e41 | 1175 | attr = get_key_attribute(rules->udev, key + strlen("SECLABEL")); |
c26547d6 | 1176 | if (!attr) { |
9f6445e3 | 1177 | log_error("error parsing SECLABEL attribute"); |
c26547d6 KS |
1178 | goto invalid; |
1179 | } | |
8e3ba377 DH |
1180 | if (op == OP_REMOVE) { |
1181 | log_error("invalid SECLABEL operation"); | |
1182 | goto invalid; | |
1183 | } | |
c26547d6 KS |
1184 | |
1185 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
1186 | continue; | |
1187 | } | |
1188 | ||
33502ffe | 1189 | if (streq(key, "KERNELS")) { |
912541b0 | 1190 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1191 | log_error("invalid KERNELS operation"); |
912541b0 KS |
1192 | goto invalid; |
1193 | } | |
1194 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); | |
1195 | continue; | |
1196 | } | |
1197 | ||
33502ffe | 1198 | if (streq(key, "SUBSYSTEMS")) { |
912541b0 | 1199 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1200 | log_error("invalid SUBSYSTEMS operation"); |
912541b0 KS |
1201 | goto invalid; |
1202 | } | |
1203 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); | |
1204 | continue; | |
1205 | } | |
1206 | ||
33502ffe | 1207 | if (streq(key, "DRIVERS")) { |
912541b0 | 1208 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1209 | log_error("invalid DRIVERS operation"); |
912541b0 KS |
1210 | goto invalid; |
1211 | } | |
1212 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); | |
1213 | continue; | |
1214 | } | |
1215 | ||
33502ffe | 1216 | if (startswith(key, "ATTRS{")) { |
912541b0 | 1217 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1218 | log_error("invalid ATTRS operation"); |
912541b0 KS |
1219 | goto invalid; |
1220 | } | |
f8294e41 | 1221 | attr = get_key_attribute(rules->udev, key + strlen("ATTRS")); |
912541b0 | 1222 | if (attr == NULL) { |
9f6445e3 | 1223 | log_error("error parsing ATTRS attribute"); |
912541b0 KS |
1224 | goto invalid; |
1225 | } | |
33502ffe | 1226 | if (startswith(attr, "device/")) |
baa30fbc | 1227 | log_error("the 'device' link may not be available in a future kernel, " |
912541b0 KS |
1228 | "please fix it in %s:%u", filename, lineno); |
1229 | else if (strstr(attr, "../") != NULL) | |
baa30fbc | 1230 | log_error("do not reference parent sysfs directories directly, " |
912541b0 KS |
1231 | "it may break with a future kernel, please fix it in %s:%u", filename, lineno); |
1232 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); | |
1233 | continue; | |
1234 | } | |
1235 | ||
33502ffe | 1236 | if (streq(key, "TAGS")) { |
912541b0 | 1237 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1238 | log_error("invalid TAGS operation"); |
912541b0 KS |
1239 | goto invalid; |
1240 | } | |
1241 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); | |
1242 | continue; | |
1243 | } | |
1244 | ||
33502ffe | 1245 | if (startswith(key, "ENV{")) { |
f8294e41 | 1246 | attr = get_key_attribute(rules->udev, key + strlen("ENV")); |
912541b0 | 1247 | if (attr == NULL) { |
9f6445e3 | 1248 | log_error("error parsing ENV attribute"); |
912541b0 KS |
1249 | goto invalid; |
1250 | } | |
8e3ba377 DH |
1251 | if (op == OP_REMOVE) { |
1252 | log_error("invalid ENV operation"); | |
1253 | goto invalid; | |
1254 | } | |
912541b0 KS |
1255 | if (op < OP_MATCH_MAX) { |
1256 | if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) | |
1257 | goto invalid; | |
1258 | } else { | |
1259 | static const char *blacklist[] = { | |
1260 | "ACTION", | |
1261 | "SUBSYSTEM", | |
1262 | "DEVTYPE", | |
1263 | "MAJOR", | |
1264 | "MINOR", | |
1265 | "DRIVER", | |
1266 | "IFINDEX", | |
1267 | "DEVNAME", | |
1268 | "DEVLINKS", | |
1269 | "DEVPATH", | |
1270 | "TAGS", | |
1271 | }; | |
1272 | unsigned int i; | |
1273 | ||
395ea978 KS |
1274 | for (i = 0; i < ELEMENTSOF(blacklist); i++) { |
1275 | if (!streq(attr, blacklist[i])) | |
912541b0 | 1276 | continue; |
9f6445e3 | 1277 | log_error("invalid ENV attribute, '%s' can not be set %s:%u", attr, filename, lineno); |
395ea978 KS |
1278 | goto invalid; |
1279 | } | |
912541b0 KS |
1280 | if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) |
1281 | goto invalid; | |
1282 | } | |
1283 | continue; | |
1284 | } | |
1285 | ||
33502ffe | 1286 | if (streq(key, "TAG")) { |
912541b0 KS |
1287 | if (op < OP_MATCH_MAX) |
1288 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1289 | else | |
1290 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
1291 | continue; | |
1292 | } | |
1293 | ||
33502ffe | 1294 | if (streq(key, "PROGRAM")) { |
8e3ba377 DH |
1295 | if (op == OP_REMOVE) { |
1296 | log_error("invalid PROGRAM operation"); | |
1297 | goto invalid; | |
1298 | } | |
912541b0 KS |
1299 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
1300 | continue; | |
1301 | } | |
1302 | ||
33502ffe | 1303 | if (streq(key, "RESULT")) { |
912541b0 | 1304 | if (op > OP_MATCH_MAX) { |
9f6445e3 | 1305 | log_error("invalid RESULT operation"); |
912541b0 KS |
1306 | goto invalid; |
1307 | } | |
1308 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); | |
1309 | continue; | |
1310 | } | |
1311 | ||
33502ffe | 1312 | if (startswith(key, "IMPORT")) { |
f8294e41 | 1313 | attr = get_key_attribute(rules->udev, key + strlen("IMPORT")); |
912541b0 | 1314 | if (attr == NULL) { |
9f6445e3 | 1315 | log_error("IMPORT{} type missing, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1316 | continue; |
1317 | } | |
8e3ba377 DH |
1318 | if (op == OP_REMOVE) { |
1319 | log_error("invalid IMPORT operation"); | |
1320 | goto invalid; | |
1321 | } | |
33502ffe | 1322 | if (streq(attr, "program")) { |
912541b0 KS |
1323 | /* find known built-in command */ |
1324 | if (value[0] != '/') { | |
1325 | enum udev_builtin_cmd cmd; | |
1326 | ||
1327 | cmd = udev_builtin_lookup(value); | |
1328 | if (cmd < UDEV_BUILTIN_MAX) { | |
9f6445e3 | 1329 | log_debug("IMPORT found builtin '%s', replacing %s:%u", |
baa30fbc | 1330 | value, filename, lineno); |
912541b0 KS |
1331 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1332 | continue; | |
1333 | } | |
1334 | } | |
912541b0 | 1335 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1336 | } else if (streq(attr, "builtin")) { |
912541b0 KS |
1337 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1338 | ||
912541b0 KS |
1339 | if (cmd < UDEV_BUILTIN_MAX) |
1340 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
1341 | else | |
9f6445e3 | 1342 | log_error("IMPORT{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1343 | } else if (streq(attr, "file")) { |
912541b0 | 1344 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
33502ffe | 1345 | } else if (streq(attr, "db")) { |
912541b0 | 1346 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
33502ffe | 1347 | } else if (streq(attr, "cmdline")) { |
912541b0 | 1348 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
33502ffe | 1349 | } else if (streq(attr, "parent")) { |
912541b0 | 1350 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
83cd6b75 | 1351 | } else |
9f6445e3 | 1352 | log_error("IMPORT{} unknown type, ignoring IMPORT %s:%u", filename, lineno); |
912541b0 KS |
1353 | continue; |
1354 | } | |
1355 | ||
33502ffe | 1356 | if (startswith(key, "TEST")) { |
912541b0 KS |
1357 | mode_t mode = 0; |
1358 | ||
1359 | if (op > OP_MATCH_MAX) { | |
9f6445e3 | 1360 | log_error("invalid TEST operation"); |
912541b0 KS |
1361 | goto invalid; |
1362 | } | |
f8294e41 | 1363 | attr = get_key_attribute(rules->udev, key + strlen("TEST")); |
912541b0 KS |
1364 | if (attr != NULL) { |
1365 | mode = strtol(attr, NULL, 8); | |
1366 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
1367 | } else { | |
1368 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); | |
1369 | } | |
1370 | continue; | |
1371 | } | |
1372 | ||
33502ffe | 1373 | if (startswith(key, "RUN")) { |
f8294e41 | 1374 | attr = get_key_attribute(rules->udev, key + strlen("RUN")); |
83cd6b75 KS |
1375 | if (attr == NULL) |
1376 | attr = "program"; | |
8e3ba377 DH |
1377 | if (op == OP_REMOVE) { |
1378 | log_error("invalid RUN operation"); | |
1379 | goto invalid; | |
1380 | } | |
83cd6b75 | 1381 | |
33502ffe | 1382 | if (streq(attr, "builtin")) { |
83cd6b75 KS |
1383 | enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
1384 | ||
1385 | if (cmd < UDEV_BUILTIN_MAX) | |
1386 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1387 | else | |
ec3281d3 | 1388 | log_error("RUN{builtin}: '%s' unknown %s:%u", value, filename, lineno); |
33502ffe | 1389 | } else if (streq(attr, "program")) { |
83cd6b75 KS |
1390 | enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
1391 | ||
83cd6b75 KS |
1392 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1393 | } else { | |
9f6445e3 | 1394 | log_error("RUN{} unknown type, ignoring RUN %s:%u", filename, lineno); |
83cd6b75 KS |
1395 | } |
1396 | ||
912541b0 KS |
1397 | continue; |
1398 | } | |
1399 | ||
33502ffe | 1400 | if (streq(key, "WAIT_FOR") || streq(key, "WAIT_FOR_SYSFS")) { |
8e3ba377 DH |
1401 | if (op == OP_REMOVE) { |
1402 | log_error("invalid WAIT_FOR/WAIT_FOR_SYSFS operation"); | |
1403 | goto invalid; | |
1404 | } | |
912541b0 KS |
1405 | rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); |
1406 | continue; | |
1407 | } | |
1408 | ||
33502ffe | 1409 | if (streq(key, "LABEL")) { |
8e3ba377 DH |
1410 | if (op == OP_REMOVE) { |
1411 | log_error("invalid LABEL operation"); | |
1412 | goto invalid; | |
1413 | } | |
915bf0f6 | 1414 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 KS |
1415 | continue; |
1416 | } | |
1417 | ||
33502ffe | 1418 | if (streq(key, "GOTO")) { |
8e3ba377 DH |
1419 | if (op == OP_REMOVE) { |
1420 | log_error("invalid GOTO operation"); | |
1421 | goto invalid; | |
1422 | } | |
912541b0 KS |
1423 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
1424 | continue; | |
1425 | } | |
1426 | ||
33502ffe | 1427 | if (startswith(key, "NAME")) { |
8e3ba377 DH |
1428 | if (op == OP_REMOVE) { |
1429 | log_error("invalid NAME operation"); | |
1430 | goto invalid; | |
1431 | } | |
912541b0 KS |
1432 | if (op < OP_MATCH_MAX) { |
1433 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); | |
1434 | } else { | |
33502ffe | 1435 | if (streq(value, "%k")) { |
baa30fbc | 1436 | log_error("NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " |
912541b0 KS |
1437 | "please remove it from %s:%u\n", filename, lineno); |
1438 | continue; | |
1439 | } | |
1440 | if (value[0] == '\0') { | |
baa30fbc KS |
1441 | log_debug("NAME=\"\" is ignored, because udev will not delete any device nodes, " |
1442 | "please remove it from %s:%u\n", filename, lineno); | |
912541b0 KS |
1443 | continue; |
1444 | } | |
1445 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1446 | } | |
1447 | rule_tmp.rule.rule.can_set_name = true; | |
1448 | continue; | |
1449 | } | |
1450 | ||
8a173387 | 1451 | if (streq(key, "SYMLINK")) { |
8e3ba377 DH |
1452 | if (op == OP_REMOVE) { |
1453 | log_error("invalid SYMLINK operation"); | |
1454 | goto invalid; | |
1455 | } | |
8a173387 | 1456 | if (op < OP_MATCH_MAX) |
912541b0 | 1457 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1458 | else |
1459 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 KS |
1460 | rule_tmp.rule.rule.can_set_name = true; |
1461 | continue; | |
1462 | } | |
1463 | ||
33502ffe | 1464 | if (streq(key, "OWNER")) { |
912541b0 KS |
1465 | uid_t uid; |
1466 | char *endptr; | |
1467 | ||
8e3ba377 DH |
1468 | if (op == OP_REMOVE) { |
1469 | log_error("invalid OWNER operation"); | |
1470 | goto invalid; | |
1471 | } | |
1472 | ||
912541b0 KS |
1473 | uid = strtoul(value, &endptr, 10); |
1474 | if (endptr[0] == '\0') { | |
1475 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1476 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1477 | uid = add_uid(rules, value); | |
1478 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1479 | } else if (rules->resolve_names >= 0) { | |
1480 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); | |
1481 | } | |
1482 | rule_tmp.rule.rule.can_set_name = true; | |
1483 | continue; | |
1484 | } | |
1485 | ||
33502ffe | 1486 | if (streq(key, "GROUP")) { |
912541b0 KS |
1487 | gid_t gid; |
1488 | char *endptr; | |
1489 | ||
8e3ba377 DH |
1490 | if (op == OP_REMOVE) { |
1491 | log_error("invalid GROUP operation"); | |
1492 | goto invalid; | |
1493 | } | |
1494 | ||
912541b0 KS |
1495 | gid = strtoul(value, &endptr, 10); |
1496 | if (endptr[0] == '\0') { | |
1497 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1498 | } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { | |
1499 | gid = add_gid(rules, value); | |
1500 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1501 | } else if (rules->resolve_names >= 0) { | |
1502 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); | |
1503 | } | |
1504 | rule_tmp.rule.rule.can_set_name = true; | |
1505 | continue; | |
1506 | } | |
1507 | ||
33502ffe | 1508 | if (streq(key, "MODE")) { |
912541b0 KS |
1509 | mode_t mode; |
1510 | char *endptr; | |
1511 | ||
8e3ba377 DH |
1512 | if (op == OP_REMOVE) { |
1513 | log_error("invalid MODE operation"); | |
1514 | goto invalid; | |
1515 | } | |
1516 | ||
912541b0 KS |
1517 | mode = strtol(value, &endptr, 8); |
1518 | if (endptr[0] == '\0') | |
1519 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1520 | else | |
1521 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1522 | rule_tmp.rule.rule.can_set_name = true; | |
1523 | continue; | |
1524 | } | |
1525 | ||
33502ffe | 1526 | if (streq(key, "OPTIONS")) { |
912541b0 KS |
1527 | const char *pos; |
1528 | ||
8e3ba377 DH |
1529 | if (op == OP_REMOVE) { |
1530 | log_error("invalid OPTIONS operation"); | |
1531 | goto invalid; | |
1532 | } | |
1533 | ||
912541b0 KS |
1534 | pos = strstr(value, "link_priority="); |
1535 | if (pos != NULL) { | |
1536 | int prio = atoi(&pos[strlen("link_priority=")]); | |
1537 | ||
1538 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1539 | } |
1540 | ||
9f20a8a3 | 1541 | pos = strstr(value, "string_escape="); |
912541b0 KS |
1542 | if (pos != NULL) { |
1543 | pos = &pos[strlen("string_escape=")]; | |
33502ffe | 1544 | if (startswith(pos, "none")) |
912541b0 | 1545 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1546 | else if (startswith(pos, "replace")) |
912541b0 KS |
1547 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1548 | } | |
1549 | ||
1550 | pos = strstr(value, "db_persist"); | |
1551 | if (pos != NULL) | |
1552 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1553 | ||
1554 | pos = strstr(value, "nowatch"); | |
1555 | if (pos != NULL) { | |
1556 | const int off = 0; | |
1557 | ||
1558 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1559 | } else { |
1560 | pos = strstr(value, "watch"); | |
1561 | if (pos != NULL) { | |
1562 | const int on = 1; | |
1563 | ||
1564 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1565 | } |
1566 | } | |
1567 | ||
1568 | pos = strstr(value, "static_node="); | |
1569 | if (pos != NULL) { | |
1570 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); | |
1571 | rule_tmp.rule.rule.has_static_node = true; | |
1572 | } | |
1573 | ||
1574 | continue; | |
1575 | } | |
1576 | ||
9f6445e3 | 1577 | log_error("unknown key '%s' in %s:%u", key, filename, lineno); |
912541b0 KS |
1578 | goto invalid; |
1579 | } | |
1580 | ||
1581 | /* add rule token */ | |
1582 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; | |
1583 | if (add_token(rules, &rule_tmp.rule) != 0) | |
1584 | goto invalid; | |
1585 | ||
1586 | /* add tokens to list, sorted by type */ | |
1587 | if (sort_token(rules, &rule_tmp) != 0) | |
1588 | goto invalid; | |
1589 | ||
1590 | return 0; | |
c7521974 | 1591 | invalid: |
9f6445e3 | 1592 | log_error("invalid rule '%s:%u'", filename, lineno); |
912541b0 | 1593 | return -1; |
c7521974 KS |
1594 | } |
1595 | ||
9ec6e95b | 1596 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1597 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1598 | unsigned int first_token; |
775f8b3c | 1599 | unsigned int filename_off; |
912541b0 KS |
1600 | char line[UTIL_LINE_SIZE]; |
1601 | int line_nr = 0; | |
1602 | unsigned int i; | |
1603 | ||
ed88bcfb ZJS |
1604 | f = fopen(filename, "re"); |
1605 | if (!f) { | |
1606 | if (errno == ENOENT) | |
1607 | return 0; | |
1608 | else | |
1609 | return -errno; | |
775f8b3c | 1610 | } |
912541b0 | 1611 | |
ed88bcfb ZJS |
1612 | if (null_or_empty_fd(fileno(f))) { |
1613 | log_debug("Skipping empty file: %s", filename); | |
1614 | return 0; | |
1615 | } else | |
1616 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1617 | |
1618 | first_token = rules->token_cur; | |
915bf0f6 | 1619 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1620 | |
1621 | while (fgets(line, sizeof(line), f) != NULL) { | |
1622 | char *key; | |
1623 | size_t len; | |
1624 | ||
1625 | /* skip whitespace */ | |
1626 | line_nr++; | |
1627 | key = line; | |
1628 | while (isspace(key[0])) | |
1629 | key++; | |
1630 | ||
1631 | /* comment */ | |
1632 | if (key[0] == '#') | |
1633 | continue; | |
1634 | ||
1635 | len = strlen(line); | |
1636 | if (len < 3) | |
1637 | continue; | |
1638 | ||
1639 | /* continue reading if backslash+newline is found */ | |
1640 | while (line[len-2] == '\\') { | |
1641 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1642 | break; | |
1643 | if (strlen(&line[len-2]) < 2) | |
1644 | break; | |
1645 | line_nr++; | |
1646 | len = strlen(line); | |
1647 | } | |
1648 | ||
1649 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1650 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1651 | continue; |
1652 | } | |
1653 | add_rule(rules, key, filename, filename_off, line_nr); | |
1654 | } | |
912541b0 KS |
1655 | |
1656 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1657 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1658 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1659 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1660 | unsigned int j; |
1661 | ||
1662 | for (j = i+1; j < rules->token_cur; j++) { | |
1663 | if (rules->tokens[j].type != TK_RULE) | |
1664 | continue; | |
1665 | if (rules->tokens[j].rule.label_off == 0) | |
1666 | continue; | |
915bf0f6 | 1667 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1668 | continue; |
1669 | rules->tokens[i].key.rule_goto = j; | |
1670 | break; | |
1671 | } | |
1672 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1673 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1674 | } |
1675 | } | |
1676 | return 0; | |
c7521974 KS |
1677 | } |
1678 | ||
9ec6e95b | 1679 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1680 | struct udev_rules *rules; |
1681 | struct udev_list file_list; | |
912541b0 | 1682 | struct token end_token; |
775f8b3c KS |
1683 | char **files, **f; |
1684 | int r; | |
912541b0 | 1685 | |
955d98c9 | 1686 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1687 | if (rules == NULL) |
1688 | return NULL; | |
1689 | rules->udev = udev; | |
1690 | rules->resolve_names = resolve_names; | |
1691 | udev_list_init(udev, &file_list, true); | |
1692 | ||
1693 | /* init token array and string buffer */ | |
1694 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1695 | if (rules->tokens == NULL) |
1696 | return udev_rules_unref(rules); | |
912541b0 KS |
1697 | rules->token_max = PREALLOC_TOKEN; |
1698 | ||
915bf0f6 KS |
1699 | rules->strbuf = strbuf_new(); |
1700 | if (!rules->strbuf) | |
0820a4f0 VP |
1701 | return udev_rules_unref(rules); |
1702 | ||
3b8c1cb0 KS |
1703 | udev_rules_check_timestamp(rules); |
1704 | ||
2ad8416d | 1705 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1706 | if (r < 0) { |
da927ba9 | 1707 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1708 | return udev_rules_unref(rules); |
912541b0 KS |
1709 | } |
1710 | ||
775f8b3c KS |
1711 | /* |
1712 | * The offset value in the rules strct is limited; add all | |
1713 | * rules file names to the beginning of the string buffer. | |
1714 | */ | |
1715 | STRV_FOREACH(f, files) | |
915bf0f6 | 1716 | rules_add_string(rules, *f); |
912541b0 | 1717 | |
775f8b3c KS |
1718 | STRV_FOREACH(f, files) |
1719 | parse_file(rules, *f); | |
1720 | ||
1721 | strv_free(files); | |
912541b0 | 1722 | |
29804cc1 | 1723 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1724 | end_token.type = TK_END; |
1725 | add_token(rules, &end_token); | |
9f6445e3 | 1726 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1727 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1728 | |
915bf0f6 | 1729 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1730 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1731 | rules->strbuf->in_count, rules->strbuf->in_len, |
1732 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1733 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1734 | |
1735 | /* cleanup uid/gid cache */ | |
1736 | free(rules->uids); | |
1737 | rules->uids = NULL; | |
1738 | rules->uids_cur = 0; | |
1739 | rules->uids_max = 0; | |
1740 | free(rules->gids); | |
1741 | rules->gids = NULL; | |
1742 | rules->gids_cur = 0; | |
1743 | rules->gids_max = 0; | |
1744 | ||
1745 | dump_rules(rules); | |
1746 | return rules; | |
c7521974 KS |
1747 | } |
1748 | ||
9ec6e95b | 1749 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1750 | if (rules == NULL) |
1751 | return NULL; | |
1752 | free(rules->tokens); | |
915bf0f6 | 1753 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1754 | free(rules->uids); |
1755 | free(rules->gids); | |
1756 | free(rules); | |
1757 | return NULL; | |
c7521974 | 1758 | } |
6880b25d | 1759 | |
9ec6e95b | 1760 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1761 | if (!rules) |
1762 | return false; | |
1763 | ||
2ad8416d | 1764 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1765 | } |
1766 | ||
9ec6e95b | 1767 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1768 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1769 | char *pos; |
1770 | bool match = false; | |
1771 | ||
1772 | if (val == NULL) | |
1773 | val = ""; | |
1774 | ||
1775 | switch (token->key.glob) { | |
1776 | case GL_PLAIN: | |
33502ffe | 1777 | match = (streq(key_value, val)); |
912541b0 KS |
1778 | break; |
1779 | case GL_GLOB: | |
1780 | match = (fnmatch(key_value, val, 0) == 0); | |
1781 | break; | |
1782 | case GL_SPLIT: | |
1783 | { | |
33502ffe | 1784 | const char *s; |
912541b0 KS |
1785 | size_t len; |
1786 | ||
915bf0f6 | 1787 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1788 | len = strlen(val); |
1789 | for (;;) { | |
1790 | const char *next; | |
1791 | ||
33502ffe | 1792 | next = strchr(s, '|'); |
912541b0 | 1793 | if (next != NULL) { |
33502ffe | 1794 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1795 | |
641906e9 | 1796 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1797 | if (match) |
1798 | break; | |
1799 | } else { | |
33502ffe | 1800 | match = (streq(s, val)); |
912541b0 KS |
1801 | break; |
1802 | } | |
33502ffe | 1803 | s = &next[1]; |
912541b0 KS |
1804 | } |
1805 | break; | |
1806 | } | |
1807 | case GL_SPLIT_GLOB: | |
1808 | { | |
1809 | char value[UTIL_PATH_SIZE]; | |
1810 | ||
d5a89d7d | 1811 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1812 | key_value = value; |
1813 | while (key_value != NULL) { | |
1814 | pos = strchr(key_value, '|'); | |
1815 | if (pos != NULL) { | |
1816 | pos[0] = '\0'; | |
1817 | pos = &pos[1]; | |
1818 | } | |
912541b0 KS |
1819 | match = (fnmatch(key_value, val, 0) == 0); |
1820 | if (match) | |
1821 | break; | |
1822 | key_value = pos; | |
1823 | } | |
1824 | break; | |
1825 | } | |
1826 | case GL_SOMETHING: | |
1827 | match = (val[0] != '\0'); | |
1828 | break; | |
1829 | case GL_UNSET: | |
1830 | return -1; | |
1831 | } | |
1832 | ||
baa30fbc | 1833 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1834 | return 0; |
baa30fbc | 1835 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1836 | return 0; |
912541b0 | 1837 | return -1; |
6880b25d KS |
1838 | } |
1839 | ||
9ec6e95b | 1840 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1841 | const char *name; |
1842 | char nbuf[UTIL_NAME_SIZE]; | |
1843 | const char *value; | |
1844 | char vbuf[UTIL_NAME_SIZE]; | |
1845 | size_t len; | |
1846 | ||
915bf0f6 | 1847 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1848 | switch (cur->key.attrsubst) { |
1849 | case SB_FORMAT: | |
1850 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1851 | name = nbuf; | |
1852 | /* fall through */ | |
1853 | case SB_NONE: | |
1854 | value = udev_device_get_sysattr_value(dev, name); | |
1855 | if (value == NULL) | |
1856 | return -1; | |
1857 | break; | |
1858 | case SB_SUBSYS: | |
1859 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1860 | return -1; | |
1861 | value = vbuf; | |
1862 | break; | |
1863 | default: | |
1864 | return -1; | |
1865 | } | |
1866 | ||
1867 | /* remove trailing whitespace, if not asked to match for it */ | |
1868 | len = strlen(value); | |
1869 | if (len > 0 && isspace(value[len-1])) { | |
1870 | const char *key_value; | |
1871 | size_t klen; | |
1872 | ||
915bf0f6 | 1873 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1874 | klen = strlen(key_value); |
1875 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1876 | if (value != vbuf) { | |
d5a89d7d | 1877 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1878 | value = vbuf; |
1879 | } | |
1880 | while (len > 0 && isspace(vbuf[--len])) | |
1881 | vbuf[len] = '\0'; | |
912541b0 KS |
1882 | } |
1883 | } | |
1884 | ||
1885 | return match_key(rules, cur, value); | |
6880b25d KS |
1886 | } |
1887 | ||
1888 | enum escape_type { | |
912541b0 KS |
1889 | ESCAPE_UNSET, |
1890 | ESCAPE_NONE, | |
1891 | ESCAPE_REPLACE, | |
6880b25d KS |
1892 | }; |
1893 | ||
dd5eddd2 KS |
1894 | int udev_rules_apply_to_event(struct udev_rules *rules, |
1895 | struct udev_event *event, | |
1896 | usec_t timeout_usec, | |
67117413 | 1897 | usec_t timeout_warn_usec, |
8314de1d | 1898 | struct udev_list *properties_list) { |
912541b0 KS |
1899 | struct token *cur; |
1900 | struct token *rule; | |
1901 | enum escape_type esc = ESCAPE_UNSET; | |
1902 | bool can_set_name; | |
1903 | ||
1904 | if (rules->tokens == NULL) | |
1905 | return -1; | |
1906 | ||
33502ffe | 1907 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1908 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1909 | udev_device_get_ifindex(event->dev) > 0)); | |
1910 | ||
1911 | /* loop through token list, match, run actions or forward to next rule */ | |
1912 | cur = &rules->tokens[0]; | |
1913 | rule = cur; | |
1914 | for (;;) { | |
1915 | dump_token(rules, cur); | |
1916 | switch (cur->type) { | |
1917 | case TK_RULE: | |
1918 | /* current rule */ | |
1919 | rule = cur; | |
1920 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1921 | if (!can_set_name && rule->rule.can_set_name) | |
1922 | goto nomatch; | |
1923 | esc = ESCAPE_UNSET; | |
1924 | break; | |
1925 | case TK_M_ACTION: | |
1926 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1927 | goto nomatch; | |
1928 | break; | |
1929 | case TK_M_DEVPATH: | |
1930 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1931 | goto nomatch; | |
1932 | break; | |
1933 | case TK_M_KERNEL: | |
1934 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1935 | goto nomatch; | |
1936 | break; | |
1937 | case TK_M_DEVLINK: { | |
912541b0 KS |
1938 | struct udev_list_entry *list_entry; |
1939 | bool match = false; | |
1940 | ||
1941 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1942 | const char *devlink; | |
1943 | ||
920b52e4 | 1944 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1945 | if (match_key(rules, cur, devlink) == 0) { |
1946 | match = true; | |
1947 | break; | |
1948 | } | |
1949 | } | |
1950 | if (!match) | |
1951 | goto nomatch; | |
1952 | break; | |
1953 | } | |
1954 | case TK_M_NAME: | |
1955 | if (match_key(rules, cur, event->name) != 0) | |
1956 | goto nomatch; | |
1957 | break; | |
1958 | case TK_M_ENV: { | |
915bf0f6 | 1959 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1960 | const char *value; |
1961 | ||
1962 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1963 | |
1964 | /* check global properties */ | |
1965 | if (!value && properties_list) { | |
1966 | struct udev_list_entry *list_entry; | |
1967 | ||
1968 | list_entry = udev_list_get_entry(properties_list); | |
1969 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1970 | if (list_entry != NULL) | |
1971 | value = udev_list_entry_get_value(list_entry); | |
1972 | } | |
1973 | ||
1974 | if (!value) | |
912541b0 | 1975 | value = ""; |
912541b0 KS |
1976 | if (match_key(rules, cur, value)) |
1977 | goto nomatch; | |
1978 | break; | |
1979 | } | |
1980 | case TK_M_TAG: { | |
1981 | struct udev_list_entry *list_entry; | |
1982 | bool match = false; | |
1983 | ||
1984 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1985 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1986 | match = true; |
1987 | break; | |
1988 | } | |
1989 | } | |
1990 | if (!match && (cur->key.op != OP_NOMATCH)) | |
1991 | goto nomatch; | |
1992 | break; | |
1993 | } | |
1994 | case TK_M_SUBSYSTEM: | |
1995 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1996 | goto nomatch; | |
1997 | break; | |
1998 | case TK_M_DRIVER: | |
1999 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
2000 | goto nomatch; | |
2001 | break; | |
2002 | case TK_M_WAITFOR: { | |
2003 | char filename[UTIL_PATH_SIZE]; | |
2004 | int found; | |
2005 | ||
915bf0f6 | 2006 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2007 | found = (wait_for_file(event->dev, filename, 10) == 0); |
2008 | if (!found && (cur->key.op != OP_NOMATCH)) | |
2009 | goto nomatch; | |
2010 | break; | |
2011 | } | |
2012 | case TK_M_ATTR: | |
2013 | if (match_attr(rules, event->dev, event, cur) != 0) | |
2014 | goto nomatch; | |
2015 | break; | |
f4cf2e5b KS |
2016 | case TK_M_SYSCTL: { |
2017 | char filename[UTIL_PATH_SIZE]; | |
2018 | _cleanup_free_ char *value = NULL; | |
2019 | size_t len; | |
2020 | ||
2021 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
2022 | sysctl_normalize(filename); | |
2023 | if (sysctl_read(filename, &value) < 0) | |
2024 | goto nomatch; | |
2025 | ||
2026 | len = strlen(value); | |
2027 | while (len > 0 && isspace(value[--len])) | |
2028 | value[len] = '\0'; | |
2029 | if (match_key(rules, cur, value) != 0) | |
2030 | goto nomatch; | |
2031 | break; | |
2032 | } | |
912541b0 KS |
2033 | case TK_M_KERNELS: |
2034 | case TK_M_SUBSYSTEMS: | |
2035 | case TK_M_DRIVERS: | |
2036 | case TK_M_ATTRS: | |
2037 | case TK_M_TAGS: { | |
2038 | struct token *next; | |
2039 | ||
2040 | /* get whole sequence of parent matches */ | |
2041 | next = cur; | |
2042 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
2043 | next++; | |
2044 | ||
2045 | /* loop over parents */ | |
2046 | event->dev_parent = event->dev; | |
2047 | for (;;) { | |
2048 | struct token *key; | |
2049 | ||
912541b0 KS |
2050 | /* loop over sequence of parent match keys */ |
2051 | for (key = cur; key < next; key++ ) { | |
2052 | dump_token(rules, key); | |
2053 | switch(key->type) { | |
2054 | case TK_M_KERNELS: | |
2055 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
2056 | goto try_parent; | |
2057 | break; | |
2058 | case TK_M_SUBSYSTEMS: | |
2059 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
2060 | goto try_parent; | |
2061 | break; | |
2062 | case TK_M_DRIVERS: | |
2063 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
2064 | goto try_parent; | |
2065 | break; | |
2066 | case TK_M_ATTRS: | |
2067 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
2068 | goto try_parent; | |
2069 | break; | |
2070 | case TK_M_TAGS: { | |
915bf0f6 | 2071 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
2072 | |
2073 | if (match && key->key.op == OP_NOMATCH) | |
2074 | goto try_parent; | |
2075 | if (!match && key->key.op == OP_MATCH) | |
2076 | goto try_parent; | |
2077 | break; | |
2078 | } | |
2079 | default: | |
2080 | goto nomatch; | |
2081 | } | |
912541b0 | 2082 | } |
912541b0 KS |
2083 | break; |
2084 | ||
2085 | try_parent: | |
2086 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
2087 | if (event->dev_parent == NULL) | |
2088 | goto nomatch; | |
2089 | } | |
2090 | /* move behind our sequence of parent match keys */ | |
2091 | cur = next; | |
2092 | continue; | |
2093 | } | |
2094 | case TK_M_TEST: { | |
2095 | char filename[UTIL_PATH_SIZE]; | |
2096 | struct stat statbuf; | |
2097 | int match; | |
2098 | ||
915bf0f6 | 2099 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
2100 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
2101 | if (filename[0] != '/') { | |
2102 | char tmp[UTIL_PATH_SIZE]; | |
2103 | ||
d5a89d7d KS |
2104 | strscpy(tmp, sizeof(tmp), filename); |
2105 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
2106 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
2107 | } | |
2108 | } | |
2109 | attr_subst_subdir(filename, sizeof(filename)); | |
2110 | ||
2111 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 2112 | if (match && cur->key.mode > 0) |
912541b0 | 2113 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
2114 | if (match && cur->key.op == OP_NOMATCH) |
2115 | goto nomatch; | |
2116 | if (!match && cur->key.op == OP_MATCH) | |
2117 | goto nomatch; | |
2118 | break; | |
2119 | } | |
912541b0 KS |
2120 | case TK_M_PROGRAM: { |
2121 | char program[UTIL_PATH_SIZE]; | |
2122 | char **envp; | |
209b031e | 2123 | char result[UTIL_LINE_SIZE]; |
912541b0 KS |
2124 | |
2125 | free(event->program_result); | |
2126 | event->program_result = NULL; | |
915bf0f6 | 2127 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
912541b0 | 2128 | envp = udev_device_get_properties_envp(event->dev); |
9f6445e3 | 2129 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 2130 | program, |
915bf0f6 | 2131 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2132 | rule->rule.filename_line); |
912541b0 | 2133 | |
53318514 | 2134 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, envp, result, sizeof(result)) < 0) { |
912541b0 KS |
2135 | if (cur->key.op != OP_NOMATCH) |
2136 | goto nomatch; | |
2137 | } else { | |
2138 | int count; | |
2139 | ||
2140 | util_remove_trailing_chars(result, '\n'); | |
2141 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2142 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
2143 | if (count > 0) | |
9f6445e3 | 2144 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2145 | } |
2146 | event->program_result = strdup(result); | |
912541b0 KS |
2147 | if (cur->key.op == OP_NOMATCH) |
2148 | goto nomatch; | |
2149 | } | |
2150 | break; | |
2151 | } | |
2152 | case TK_M_IMPORT_FILE: { | |
2153 | char import[UTIL_PATH_SIZE]; | |
2154 | ||
915bf0f6 | 2155 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2156 | if (import_file_into_properties(event->dev, import) != 0) |
2157 | if (cur->key.op != OP_NOMATCH) | |
2158 | goto nomatch; | |
2159 | break; | |
2160 | } | |
2161 | case TK_M_IMPORT_PROG: { | |
2162 | char import[UTIL_PATH_SIZE]; | |
2163 | ||
915bf0f6 | 2164 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 2165 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 2166 | import, |
915bf0f6 | 2167 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2168 | rule->rule.filename_line); |
912541b0 | 2169 | |
8314de1d | 2170 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import) != 0) |
912541b0 KS |
2171 | if (cur->key.op != OP_NOMATCH) |
2172 | goto nomatch; | |
2173 | break; | |
2174 | } | |
2175 | case TK_M_IMPORT_BUILTIN: { | |
2176 | char command[UTIL_PATH_SIZE]; | |
2177 | ||
2178 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2179 | /* check if we ran already */ | |
2180 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2181 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 2182 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2183 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2184 | rule->rule.filename_line); |
912541b0 KS |
2185 | /* return the result from earlier run */ |
2186 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
2187 | if (cur->key.op != OP_NOMATCH) | |
2188 | goto nomatch; | |
2189 | break; | |
2190 | } | |
2191 | /* mark as ran */ | |
2192 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2193 | } | |
2194 | ||
915bf0f6 | 2195 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2196 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2197 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2198 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2199 | rule->rule.filename_line); |
912541b0 KS |
2200 | |
2201 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2202 | /* remember failure */ | |
9f6445e3 | 2203 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2204 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2205 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2206 | if (cur->key.op != OP_NOMATCH) | |
2207 | goto nomatch; | |
2208 | } | |
2209 | break; | |
2210 | } | |
2211 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2212 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2213 | const char *value; |
2214 | ||
2215 | value = udev_device_get_property_value(event->dev_db, key); | |
df546eb5 TG |
2216 | if (value != NULL) |
2217 | udev_device_add_property(event->dev, key, value); | |
2218 | else { | |
912541b0 KS |
2219 | if (cur->key.op != OP_NOMATCH) |
2220 | goto nomatch; | |
2221 | } | |
2222 | break; | |
2223 | } | |
2224 | case TK_M_IMPORT_CMDLINE: { | |
2225 | FILE *f; | |
2226 | bool imported = false; | |
2227 | ||
47ef94ac | 2228 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2229 | if (f != NULL) { |
2230 | char cmdline[4096]; | |
2231 | ||
2232 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2233 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2234 | char *pos; |
2235 | ||
2236 | pos = strstr(cmdline, key); | |
2237 | if (pos != NULL) { | |
912541b0 KS |
2238 | pos += strlen(key); |
2239 | if (pos[0] == '\0' || isspace(pos[0])) { | |
2240 | /* we import simple flags as 'FLAG=1' */ | |
df546eb5 | 2241 | udev_device_add_property(event->dev, key, "1"); |
912541b0 KS |
2242 | imported = true; |
2243 | } else if (pos[0] == '=') { | |
2244 | const char *value; | |
2245 | ||
2246 | pos++; | |
2247 | value = pos; | |
2248 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2249 | pos++; | |
2250 | pos[0] = '\0'; | |
df546eb5 | 2251 | udev_device_add_property(event->dev, key, value); |
912541b0 KS |
2252 | imported = true; |
2253 | } | |
2254 | } | |
2255 | } | |
2256 | fclose(f); | |
2257 | } | |
2258 | if (!imported && cur->key.op != OP_NOMATCH) | |
2259 | goto nomatch; | |
2260 | break; | |
2261 | } | |
2262 | case TK_M_IMPORT_PARENT: { | |
2263 | char import[UTIL_PATH_SIZE]; | |
2264 | ||
915bf0f6 | 2265 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2266 | if (import_parent_into_properties(event->dev, import) != 0) |
2267 | if (cur->key.op != OP_NOMATCH) | |
2268 | goto nomatch; | |
2269 | break; | |
2270 | } | |
2271 | case TK_M_RESULT: | |
2272 | if (match_key(rules, cur, event->program_result) != 0) | |
2273 | goto nomatch; | |
2274 | break; | |
2275 | case TK_A_STRING_ESCAPE_NONE: | |
2276 | esc = ESCAPE_NONE; | |
2277 | break; | |
2278 | case TK_A_STRING_ESCAPE_REPLACE: | |
2279 | esc = ESCAPE_REPLACE; | |
2280 | break; | |
2281 | case TK_A_DB_PERSIST: | |
2282 | udev_device_set_db_persist(event->dev); | |
2283 | break; | |
2284 | case TK_A_INOTIFY_WATCH: | |
2285 | if (event->inotify_watch_final) | |
2286 | break; | |
2287 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2288 | event->inotify_watch_final = true; | |
2289 | event->inotify_watch = cur->key.watch; | |
2290 | break; | |
2291 | case TK_A_DEVLINK_PRIO: | |
2292 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2293 | break; | |
2294 | case TK_A_OWNER: { | |
2295 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2296 | const char *ow = owner; |
2297 | int r; | |
912541b0 KS |
2298 | |
2299 | if (event->owner_final) | |
2300 | break; | |
2301 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2302 | event->owner_final = true; | |
915bf0f6 | 2303 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2304 | event->owner_set = true; |
23bf8dd7 TG |
2305 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2306 | if (r < 0) { | |
2307 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2308 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 2309 | else |
279d3c9c | 2310 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 TG |
2311 | |
2312 | event->uid = 0; | |
2313 | } | |
9f6445e3 | 2314 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2315 | event->uid, |
915bf0f6 | 2316 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2317 | rule->rule.filename_line); |
912541b0 KS |
2318 | break; |
2319 | } | |
2320 | case TK_A_GROUP: { | |
2321 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2322 | const char *gr = group; |
2323 | int r; | |
912541b0 KS |
2324 | |
2325 | if (event->group_final) | |
2326 | break; | |
2327 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2328 | event->group_final = true; | |
915bf0f6 | 2329 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2330 | event->group_set = true; |
23bf8dd7 TG |
2331 | r = get_group_creds(&gr, &event->gid); |
2332 | if (r < 0) { | |
2333 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2334 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 2335 | else |
279d3c9c | 2336 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 TG |
2337 | |
2338 | event->gid = 0; | |
2339 | } | |
9f6445e3 | 2340 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2341 | event->gid, |
915bf0f6 | 2342 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2343 | rule->rule.filename_line); |
912541b0 KS |
2344 | break; |
2345 | } | |
2346 | case TK_A_MODE: { | |
2347 | char mode_str[UTIL_NAME_SIZE]; | |
2348 | mode_t mode; | |
2349 | char *endptr; | |
2350 | ||
2351 | if (event->mode_final) | |
2352 | break; | |
915bf0f6 | 2353 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2354 | mode = strtol(mode_str, &endptr, 8); |
2355 | if (endptr[0] != '\0') { | |
9f6445e3 | 2356 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2357 | break; |
2358 | } | |
2359 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2360 | event->mode_final = true; | |
2361 | event->mode_set = true; | |
2362 | event->mode = mode; | |
9f6445e3 | 2363 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2364 | event->mode, |
915bf0f6 | 2365 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2366 | rule->rule.filename_line); |
912541b0 KS |
2367 | break; |
2368 | } | |
2369 | case TK_A_OWNER_ID: | |
2370 | if (event->owner_final) | |
2371 | break; | |
2372 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2373 | event->owner_final = true; | |
1edefa4f | 2374 | event->owner_set = true; |
912541b0 | 2375 | event->uid = cur->key.uid; |
9f6445e3 | 2376 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2377 | event->uid, |
915bf0f6 | 2378 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2379 | rule->rule.filename_line); |
912541b0 KS |
2380 | break; |
2381 | case TK_A_GROUP_ID: | |
2382 | if (event->group_final) | |
2383 | break; | |
2384 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2385 | event->group_final = true; | |
1edefa4f | 2386 | event->group_set = true; |
912541b0 | 2387 | event->gid = cur->key.gid; |
9f6445e3 | 2388 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2389 | event->gid, |
915bf0f6 | 2390 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2391 | rule->rule.filename_line); |
912541b0 KS |
2392 | break; |
2393 | case TK_A_MODE_ID: | |
2394 | if (event->mode_final) | |
2395 | break; | |
2396 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2397 | event->mode_final = true; | |
2398 | event->mode_set = true; | |
2399 | event->mode = cur->key.mode; | |
9f6445e3 | 2400 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2401 | event->mode, |
915bf0f6 | 2402 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2403 | rule->rule.filename_line); |
912541b0 | 2404 | break; |
c26547d6 KS |
2405 | case TK_A_SECLABEL: { |
2406 | const char *name, *label; | |
2407 | ||
2408 | name = rules_str(rules, cur->key.attr_off); | |
2409 | label = rules_str(rules, cur->key.value_off); | |
2410 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2411 | udev_list_cleanup(&event->seclabel_list); | |
2412 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2413 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2414 | name, label, |
2415 | rules_str(rules, rule->rule.filename_off), | |
2416 | rule->rule.filename_line); | |
2417 | break; | |
2418 | } | |
912541b0 | 2419 | case TK_A_ENV: { |
915bf0f6 KS |
2420 | const char *name = rules_str(rules, cur->key.attr_off); |
2421 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2422 | char value_new[UTIL_NAME_SIZE]; |
2423 | const char *value_old = NULL; | |
912541b0 | 2424 | |
07845c14 KS |
2425 | if (value[0] == '\0') { |
2426 | if (cur->key.op == OP_ADD) | |
2427 | break; | |
912541b0 | 2428 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2429 | break; |
912541b0 | 2430 | } |
07845c14 KS |
2431 | |
2432 | if (cur->key.op == OP_ADD) | |
2433 | value_old = udev_device_get_property_value(event->dev, name); | |
2434 | if (value_old) { | |
2435 | char temp[UTIL_NAME_SIZE]; | |
2436 | ||
2437 | /* append value separated by space */ | |
2438 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2439 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2440 | } else |
2441 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2442 | ||
df546eb5 | 2443 | udev_device_add_property(event->dev, name, value_new); |
912541b0 KS |
2444 | break; |
2445 | } | |
2446 | case TK_A_TAG: { | |
2447 | char tag[UTIL_PATH_SIZE]; | |
2448 | const char *p; | |
2449 | ||
915bf0f6 | 2450 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2451 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2452 | udev_device_cleanup_tags_list(event->dev); | |
2453 | for (p = tag; *p != '\0'; p++) { | |
2454 | if ((*p >= 'a' && *p <= 'z') || | |
2455 | (*p >= 'A' && *p <= 'Z') || | |
2456 | (*p >= '0' && *p <= '9') || | |
2457 | *p == '-' || *p == '_') | |
2458 | continue; | |
9f6445e3 | 2459 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2460 | break; |
2461 | } | |
8e3ba377 DH |
2462 | if (cur->key.op == OP_REMOVE) |
2463 | udev_device_remove_tag(event->dev, tag); | |
2464 | else | |
2465 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2466 | break; |
2467 | } | |
2468 | case TK_A_NAME: { | |
915bf0f6 | 2469 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2470 | |
912541b0 KS |
2471 | char name_str[UTIL_PATH_SIZE]; |
2472 | int count; | |
2473 | ||
2474 | if (event->name_final) | |
2475 | break; | |
2476 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2477 | event->name_final = true; | |
2478 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2479 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2480 | count = util_replace_chars(name_str, "/"); | |
2481 | if (count > 0) | |
9f6445e3 | 2482 | log_debug("%i character(s) replaced", count); |
912541b0 | 2483 | } |
6ada823a | 2484 | if (major(udev_device_get_devnum(event->dev)) && |
4cb72937 | 2485 | (!streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/")))) { |
6ada823a KS |
2486 | log_error("NAME=\"%s\" ignored, kernel device nodes " |
2487 | "can not be renamed; please fix it in %s:%u\n", name, | |
915bf0f6 | 2488 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
6ada823a | 2489 | break; |
0ecfcbd4 | 2490 | } |
912541b0 KS |
2491 | free(event->name); |
2492 | event->name = strdup(name_str); | |
9f6445e3 | 2493 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2494 | event->name, |
915bf0f6 | 2495 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2496 | rule->rule.filename_line); |
912541b0 KS |
2497 | break; |
2498 | } | |
2499 | case TK_A_DEVLINK: { | |
2500 | char temp[UTIL_PATH_SIZE]; | |
2501 | char filename[UTIL_PATH_SIZE]; | |
2502 | char *pos, *next; | |
2503 | int count = 0; | |
2504 | ||
2505 | if (event->devlink_final) | |
2506 | break; | |
2507 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2508 | break; | |
2509 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2510 | event->devlink_final = true; | |
2511 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2512 | udev_device_cleanup_devlinks_list(event->dev); | |
2513 | ||
2514 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2515 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2516 | if (esc == ESCAPE_UNSET) |
2517 | count = util_replace_chars(temp, "/ "); | |
2518 | else if (esc == ESCAPE_REPLACE) | |
2519 | count = util_replace_chars(temp, "/"); | |
2520 | if (count > 0) | |
9f6445e3 | 2521 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2522 | pos = temp; |
2523 | while (isspace(pos[0])) | |
2524 | pos++; | |
2525 | next = strchr(pos, ' '); | |
2526 | while (next != NULL) { | |
2527 | next[0] = '\0'; | |
9f6445e3 | 2528 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2529 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2530 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2531 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2532 | while (isspace(next[1])) |
2533 | next++; | |
2534 | pos = &next[1]; | |
2535 | next = strchr(pos, ' '); | |
2536 | } | |
2537 | if (pos[0] != '\0') { | |
9f6445e3 | 2538 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2539 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2540 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2541 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2542 | } |
2543 | break; | |
2544 | } | |
2545 | case TK_A_ATTR: { | |
915bf0f6 | 2546 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2547 | char attr[UTIL_PATH_SIZE]; |
2548 | char value[UTIL_NAME_SIZE]; | |
2549 | FILE *f; | |
2550 | ||
2551 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2552 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2553 | attr_subst_subdir(attr, sizeof(attr)); |
2554 | ||
915bf0f6 | 2555 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2556 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2557 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2558 | rule->rule.filename_line); |
47ef94ac | 2559 | f = fopen(attr, "we"); |
912541b0 KS |
2560 | if (f != NULL) { |
2561 | if (fprintf(f, "%s", value) <= 0) | |
56f64d95 | 2562 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); |
912541b0 KS |
2563 | fclose(f); |
2564 | } else { | |
56f64d95 | 2565 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
912541b0 KS |
2566 | } |
2567 | break; | |
2568 | } | |
f4cf2e5b KS |
2569 | case TK_A_SYSCTL: { |
2570 | char filename[UTIL_PATH_SIZE]; | |
2571 | char value[UTIL_NAME_SIZE]; | |
2572 | int r; | |
2573 | ||
2574 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
2575 | sysctl_normalize(filename); | |
2576 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); | |
2577 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, | |
2578 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2579 | r = sysctl_write(filename, value); | |
2580 | if (r < 0) | |
2581 | log_error("error writing SYSCTL{%s}='%s': %s", filename, value, strerror(-r)); | |
2582 | break; | |
2583 | } | |
83cd6b75 KS |
2584 | case TK_A_RUN_BUILTIN: |
2585 | case TK_A_RUN_PROGRAM: { | |
2586 | struct udev_list_entry *entry; | |
2587 | ||
912541b0 KS |
2588 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2589 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2590 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2591 | rules_str(rules, cur->key.value_off), |
2592 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2593 | rule->rule.filename_line); |
915bf0f6 | 2594 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2595 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2596 | break; |
2597 | } | |
2598 | case TK_A_GOTO: | |
2599 | if (cur->key.rule_goto == 0) | |
2600 | break; | |
2601 | cur = &rules->tokens[cur->key.rule_goto]; | |
2602 | continue; | |
2603 | case TK_END: | |
2604 | return 0; | |
2605 | ||
2606 | case TK_M_PARENTS_MIN: | |
2607 | case TK_M_PARENTS_MAX: | |
2608 | case TK_M_MAX: | |
2609 | case TK_UNSET: | |
9f6445e3 | 2610 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2611 | goto nomatch; |
2612 | } | |
2613 | ||
2614 | cur++; | |
2615 | continue; | |
2616 | nomatch: | |
2617 | /* fast-forward to next rule */ | |
2618 | cur = rule + rule->rule.token_count; | |
912541b0 | 2619 | } |
6880b25d | 2620 | } |
761dfddc | 2621 | |
9ec6e95b | 2622 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2623 | struct token *cur; |
2624 | struct token *rule; | |
2625 | uid_t uid = 0; | |
2626 | gid_t gid = 0; | |
2627 | mode_t mode = 0; | |
84b6ad70 TG |
2628 | _cleanup_strv_free_ char **tags = NULL; |
2629 | char **t; | |
2630 | FILE *f = NULL; | |
2631 | _cleanup_free_ char *path = NULL; | |
2632 | int r = 0; | |
912541b0 KS |
2633 | |
2634 | if (rules->tokens == NULL) | |
84b6ad70 | 2635 | return 0; |
912541b0 KS |
2636 | |
2637 | cur = &rules->tokens[0]; | |
2638 | rule = cur; | |
2639 | for (;;) { | |
2640 | switch (cur->type) { | |
2641 | case TK_RULE: | |
2642 | /* current rule */ | |
2643 | rule = cur; | |
2644 | ||
2645 | /* skip rules without a static_node tag */ | |
2646 | if (!rule->rule.has_static_node) | |
2647 | goto next; | |
2648 | ||
2649 | uid = 0; | |
2650 | gid = 0; | |
2651 | mode = 0; | |
84b6ad70 TG |
2652 | strv_free(tags); |
2653 | tags = NULL; | |
912541b0 KS |
2654 | break; |
2655 | case TK_A_OWNER_ID: | |
2656 | uid = cur->key.uid; | |
2657 | break; | |
2658 | case TK_A_GROUP_ID: | |
2659 | gid = cur->key.gid; | |
2660 | break; | |
2661 | case TK_A_MODE_ID: | |
2662 | mode = cur->key.mode; | |
84b6ad70 TG |
2663 | break; |
2664 | case TK_A_TAG: | |
2665 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2666 | if (r < 0) | |
2667 | goto finish; | |
2668 | ||
912541b0 KS |
2669 | break; |
2670 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2671 | char device_node[UTIL_PATH_SIZE]; |
2672 | char tags_dir[UTIL_PATH_SIZE]; | |
2673 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2674 | struct stat stats; |
2675 | ||
2676 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2677 | |
84b6ad70 | 2678 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2679 | goto next; |
d6f116a7 | 2680 | |
84b6ad70 | 2681 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2682 | if (stat(device_node, &stats) != 0) |
2683 | break; | |
2684 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2685 | break; | |
84b6ad70 | 2686 | |
d6f116a7 | 2687 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2688 | if (tags) { |
84b6ad70 TG |
2689 | STRV_FOREACH(t, tags) { |
2690 | _cleanup_free_ char *unescaped_filename = NULL; | |
2691 | ||
2692 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2693 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2694 | if (r < 0) |
2695 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2696 | |
2697 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2698 | ||
2699 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2700 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2701 | if (r < 0 && errno != EEXIST) |
2702 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2703 | tag_symlink, device_node); | |
2704 | else | |
84b6ad70 TG |
2705 | r = 0; |
2706 | } | |
2707 | } | |
2708 | ||
15a72200 TG |
2709 | /* don't touch the permissions if only the tags were set */ |
2710 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2711 | break; |
2712 | ||
912541b0 KS |
2713 | if (mode == 0) { |
2714 | if (gid > 0) | |
2715 | mode = 0660; | |
2716 | else | |
2717 | mode = 0600; | |
2718 | } | |
2719 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2720 | r = chmod(device_node, mode); |
2721 | if (r < 0) { | |
9f6445e3 | 2722 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2723 | return -errno; |
2724 | } else | |
9f6445e3 | 2725 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2726 | } |
2727 | ||
2728 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2729 | r = chown(device_node, uid, gid); |
2730 | if (r < 0) { | |
9f6445e3 | 2731 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2732 | return -errno; |
2733 | } else | |
9f6445e3 | 2734 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2735 | } |
2736 | ||
84b6ad70 | 2737 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2738 | break; |
2739 | } | |
2740 | case TK_END: | |
84b6ad70 | 2741 | goto finish; |
912541b0 KS |
2742 | } |
2743 | ||
2744 | cur++; | |
2745 | continue; | |
761dfddc | 2746 | next: |
912541b0 KS |
2747 | /* fast-forward to next rule */ |
2748 | cur = rule + rule->rule.token_count; | |
2749 | continue; | |
2750 | } | |
84b6ad70 TG |
2751 | |
2752 | finish: | |
2753 | if (f) { | |
2754 | fflush(f); | |
2755 | fchmod(fileno(f), 0644); | |
2756 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
2757 | r = -errno; | |
2758 | unlink("/run/udev/static_node-tags"); | |
2759 | unlink(path); | |
2760 | } | |
2761 | fclose(f); | |
2762 | } | |
2763 | ||
2764 | return r; | |
761dfddc | 2765 | } |