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2232cac8 | 1 | /* |
1298001e | 2 | * Copyright (C) 2003-2012 Kay Sievers <kay@vrfy.org> |
2232cac8 | 3 | * |
55e9959b KS |
4 | * This program is free software: you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
3d6d12c6 | 8 | * |
55e9959b KS |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
2232cac8 | 13 | * |
55e9959b KS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
2232cac8 GKH |
16 | */ |
17 | ||
2232cac8 | 18 | #include <ctype.h> |
5ee7ecfb | 19 | #include <dirent.h> |
4f5dd394 LP |
20 | #include <errno.h> |
21 | #include <fcntl.h> | |
cea61f5c | 22 | #include <fnmatch.h> |
4f5dd394 LP |
23 | #include <limits.h> |
24 | #include <stdbool.h> | |
25 | #include <stddef.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
959e8b5d | 29 | #include <time.h> |
4f5dd394 | 30 | #include <unistd.h> |
2232cac8 | 31 | |
b5efdb8a | 32 | #include "alloc-util.h" |
2c21044f | 33 | #include "conf-files.h" |
4f5dd394 | 34 | #include "escape.h" |
3ffd4af2 | 35 | #include "fd-util.h" |
fdd21be6 | 36 | #include "fs-util.h" |
7d50b32a | 37 | #include "glob-util.h" |
4f5dd394 | 38 | #include "path-util.h" |
8fcde012 | 39 | #include "stat-util.h" |
f4850a1d | 40 | #include "stdio-util.h" |
915bf0f6 | 41 | #include "strbuf.h" |
07630cea | 42 | #include "string-util.h" |
84b6ad70 | 43 | #include "strv.h" |
f4cf2e5b | 44 | #include "sysctl-util.h" |
4f5dd394 | 45 | #include "udev.h" |
b1d4f8e1 | 46 | #include "user-util.h" |
07630cea | 47 | #include "util.h" |
2232cac8 | 48 | |
a1525d17 | 49 | #define PREALLOC_TOKEN 2048 |
c7521974 | 50 | |
4052400f | 51 | struct uid_gid { |
912541b0 KS |
52 | unsigned int name_off; |
53 | union { | |
a1525d17 KS |
54 | uid_t uid; |
55 | gid_t gid; | |
912541b0 | 56 | }; |
4052400f KS |
57 | }; |
58 | ||
2ad8416d ZJS |
59 | static const char* const rules_dirs[] = { |
60 | "/etc/udev/rules.d", | |
61 | "/run/udev/rules.d", | |
62 | UDEVLIBEXECDIR "/rules.d", | |
4f5dd394 LP |
63 | NULL |
64 | }; | |
2ad8416d | 65 | |
4052400f | 66 | struct udev_rules { |
912541b0 | 67 | struct udev *udev; |
97f2d76d | 68 | usec_t dirs_ts_usec; |
912541b0 KS |
69 | int resolve_names; |
70 | ||
71 | /* every key in the rules file becomes a token */ | |
72 | struct token *tokens; | |
73 | unsigned int token_cur; | |
74 | unsigned int token_max; | |
75 | ||
ab06eef8 | 76 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 77 | struct strbuf *strbuf; |
912541b0 KS |
78 | |
79 | /* during rule parsing, uid/gid lookup results are cached */ | |
80 | struct uid_gid *uids; | |
81 | unsigned int uids_cur; | |
82 | unsigned int uids_max; | |
83 | struct uid_gid *gids; | |
84 | unsigned int gids_cur; | |
85 | unsigned int gids_max; | |
4052400f KS |
86 | }; |
87 | ||
915bf0f6 KS |
88 | static char *rules_str(struct udev_rules *rules, unsigned int off) { |
89 | return rules->strbuf->buf + off; | |
90 | } | |
91 | ||
92 | static unsigned int rules_add_string(struct udev_rules *rules, const char *s) { | |
93 | return strbuf_add_string(rules->strbuf, s, strlen(s)); | |
94 | } | |
95 | ||
8e3ba377 | 96 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 97 | enum operation_type { |
912541b0 | 98 | OP_UNSET, |
b0f7409f | 99 | |
912541b0 KS |
100 | OP_MATCH, |
101 | OP_NOMATCH, | |
102 | OP_MATCH_MAX, | |
b0f7409f | 103 | |
912541b0 | 104 | OP_ADD, |
8e3ba377 | 105 | OP_REMOVE, |
912541b0 KS |
106 | OP_ASSIGN, |
107 | OP_ASSIGN_FINAL, | |
c7521974 KS |
108 | }; |
109 | ||
ac218d9c | 110 | enum string_glob_type { |
912541b0 | 111 | GL_UNSET, |
a1525d17 | 112 | GL_PLAIN, /* no special chars */ |
912541b0 | 113 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
114 | GL_SPLIT, /* multi-value A|B */ |
115 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
116 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
117 | }; |
118 | ||
32028733 | 119 | enum string_subst_type { |
912541b0 KS |
120 | SB_UNSET, |
121 | SB_NONE, | |
122 | SB_FORMAT, | |
123 | SB_SUBSYS, | |
32028733 KS |
124 | }; |
125 | ||
154a7b84 | 126 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 127 | enum token_type { |
912541b0 KS |
128 | TK_UNSET, |
129 | TK_RULE, | |
130 | ||
a1525d17 KS |
131 | TK_M_ACTION, /* val */ |
132 | TK_M_DEVPATH, /* val */ | |
133 | TK_M_KERNEL, /* val */ | |
134 | TK_M_DEVLINK, /* val */ | |
135 | TK_M_NAME, /* val */ | |
136 | TK_M_ENV, /* val, attr */ | |
137 | TK_M_TAG, /* val */ | |
138 | TK_M_SUBSYSTEM, /* val */ | |
139 | TK_M_DRIVER, /* val */ | |
140 | TK_M_WAITFOR, /* val */ | |
141 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 142 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
143 | |
144 | TK_M_PARENTS_MIN, | |
a1525d17 | 145 | TK_M_KERNELS, /* val */ |
912541b0 | 146 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
147 | TK_M_DRIVERS, /* val */ |
148 | TK_M_ATTRS, /* val, attr */ | |
149 | TK_M_TAGS, /* val */ | |
912541b0 KS |
150 | TK_M_PARENTS_MAX, |
151 | ||
a1525d17 | 152 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
153 | TK_M_PROGRAM, /* val */ |
154 | TK_M_IMPORT_FILE, /* val */ | |
155 | TK_M_IMPORT_PROG, /* val */ | |
156 | TK_M_IMPORT_BUILTIN, /* val */ | |
157 | TK_M_IMPORT_DB, /* val */ | |
158 | TK_M_IMPORT_CMDLINE, /* val */ | |
159 | TK_M_IMPORT_PARENT, /* val */ | |
160 | TK_M_RESULT, /* val */ | |
912541b0 KS |
161 | TK_M_MAX, |
162 | ||
163 | TK_A_STRING_ESCAPE_NONE, | |
164 | TK_A_STRING_ESCAPE_REPLACE, | |
165 | TK_A_DB_PERSIST, | |
a1525d17 KS |
166 | TK_A_INOTIFY_WATCH, /* int */ |
167 | TK_A_DEVLINK_PRIO, /* int */ | |
168 | TK_A_OWNER, /* val */ | |
169 | TK_A_GROUP, /* val */ | |
170 | TK_A_MODE, /* val */ | |
171 | TK_A_OWNER_ID, /* uid_t */ | |
172 | TK_A_GROUP_ID, /* gid_t */ | |
173 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 174 | TK_A_TAG, /* val */ |
a1525d17 | 175 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 176 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 177 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
178 | TK_A_NAME, /* val */ |
179 | TK_A_DEVLINK, /* val */ | |
180 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 181 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
182 | TK_A_RUN_BUILTIN, /* val, bool */ |
183 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 184 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
185 | |
186 | TK_END, | |
c7521974 KS |
187 | }; |
188 | ||
3f3aa9f5 | 189 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 190 | struct token { |
912541b0 KS |
191 | union { |
192 | unsigned char type; /* same in rule and key */ | |
193 | struct { | |
194 | enum token_type type:8; | |
195 | bool can_set_name:1; | |
196 | bool has_static_node:1; | |
197 | unsigned int unused:6; | |
198 | unsigned short token_count; | |
199 | unsigned int label_off; | |
200 | unsigned short filename_off; | |
201 | unsigned short filename_line; | |
202 | } rule; | |
203 | struct { | |
204 | enum token_type type:8; | |
205 | enum operation_type op:8; | |
206 | enum string_glob_type glob:8; | |
207 | enum string_subst_type subst:4; | |
208 | enum string_subst_type attrsubst:4; | |
209 | unsigned int value_off; | |
210 | union { | |
211 | unsigned int attr_off; | |
912541b0 KS |
212 | unsigned int rule_goto; |
213 | mode_t mode; | |
214 | uid_t uid; | |
215 | gid_t gid; | |
216 | int devlink_prio; | |
912541b0 KS |
217 | int watch; |
218 | enum udev_builtin_cmd builtin_cmd; | |
219 | }; | |
220 | } key; | |
221 | }; | |
4052400f KS |
222 | }; |
223 | ||
912541b0 | 224 | #define MAX_TK 64 |
4052400f | 225 | struct rule_tmp { |
912541b0 KS |
226 | struct udev_rules *rules; |
227 | struct token rule; | |
228 | struct token token[MAX_TK]; | |
229 | unsigned int token_cur; | |
4052400f KS |
230 | }; |
231 | ||
baa30fbc | 232 | #ifdef DEBUG |
9ec6e95b | 233 | static const char *operation_str(enum operation_type type) { |
912541b0 | 234 | static const char *operation_strs[] = { |
a1525d17 KS |
235 | [OP_UNSET] = "UNSET", |
236 | [OP_MATCH] = "match", | |
237 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
238 | [OP_MATCH_MAX] = "MATCH_MAX", |
239 | ||
a1525d17 | 240 | [OP_ADD] = "add", |
8e3ba377 | 241 | [OP_REMOVE] = "remove", |
a1525d17 KS |
242 | [OP_ASSIGN] = "assign", |
243 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
244 | } ; |
245 | ||
246 | return operation_strs[type]; | |
5d6a1fa6 | 247 | } |
4052400f | 248 | |
9ec6e95b | 249 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 250 | static const char *string_glob_strs[] = { |
a1525d17 KS |
251 | [GL_UNSET] = "UNSET", |
252 | [GL_PLAIN] = "plain", | |
253 | [GL_GLOB] = "glob", | |
254 | [GL_SPLIT] = "split", | |
255 | [GL_SPLIT_GLOB] = "split-glob", | |
256 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
257 | }; |
258 | ||
259 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
260 | } |
261 | ||
9ec6e95b | 262 | static const char *token_str(enum token_type type) { |
912541b0 | 263 | static const char *token_strs[] = { |
a1525d17 KS |
264 | [TK_UNSET] = "UNSET", |
265 | [TK_RULE] = "RULE", | |
912541b0 | 266 | |
a1525d17 | 267 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 268 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 269 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 270 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
271 | [TK_M_NAME] = "M NAME", |
272 | [TK_M_ENV] = "M ENV", | |
273 | [TK_M_TAG] = "M TAG", | |
274 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
275 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 276 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 277 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 278 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 279 | |
a1525d17 | 280 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 281 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 282 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 283 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
284 | [TK_M_ATTRS] = "M ATTRS", |
285 | [TK_M_TAGS] = "M TAGS", | |
286 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 287 | |
a1525d17 | 288 | [TK_M_TEST] = "M TEST", |
912541b0 | 289 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
290 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
291 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
292 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
293 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
294 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
295 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
296 | [TK_M_RESULT] = "M RESULT", | |
297 | [TK_M_MAX] = "M MAX", | |
298 | ||
299 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
300 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
301 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
302 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
303 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
304 | [TK_A_OWNER] = "A OWNER", | |
305 | [TK_A_GROUP] = "A GROUP", | |
306 | [TK_A_MODE] = "A MODE", | |
307 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
308 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
309 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 310 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 311 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
312 | [TK_A_ENV] = "A ENV", |
313 | [TK_A_TAG] = "A ENV", | |
314 | [TK_A_NAME] = "A NAME", | |
912541b0 | 315 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 316 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 317 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
318 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
319 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 320 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 321 | |
a1525d17 | 322 | [TK_END] = "END", |
912541b0 KS |
323 | }; |
324 | ||
325 | return token_strs[type]; | |
5d6a1fa6 | 326 | } |
c7521974 | 327 | |
9ec6e95b | 328 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
329 | enum token_type type = token->type; |
330 | enum operation_type op = token->key.op; | |
331 | enum string_glob_type glob = token->key.glob; | |
fa394301 LR |
332 | const char *value = rules_str(rules, token->key.value_off); |
333 | const char *attr = &rules->strbuf->buf[token->key.attr_off]; | |
912541b0 KS |
334 | |
335 | switch (type) { | |
336 | case TK_RULE: | |
337 | { | |
338 | const char *tks_ptr = (char *)rules->tokens; | |
339 | const char *tk_ptr = (char *)token; | |
340 | unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); | |
341 | ||
9f6445e3 | 342 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
fa394301 | 343 | &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line, |
baa30fbc | 344 | idx, token->rule.token_count, |
fa394301 | 345 | &rules->strbuf->buf[token->rule.label_off]); |
912541b0 KS |
346 | break; |
347 | } | |
348 | case TK_M_ACTION: | |
349 | case TK_M_DEVPATH: | |
350 | case TK_M_KERNEL: | |
351 | case TK_M_SUBSYSTEM: | |
352 | case TK_M_DRIVER: | |
353 | case TK_M_WAITFOR: | |
354 | case TK_M_DEVLINK: | |
355 | case TK_M_NAME: | |
356 | case TK_M_KERNELS: | |
357 | case TK_M_SUBSYSTEMS: | |
358 | case TK_M_DRIVERS: | |
359 | case TK_M_TAGS: | |
360 | case TK_M_PROGRAM: | |
361 | case TK_M_IMPORT_FILE: | |
362 | case TK_M_IMPORT_PROG: | |
363 | case TK_M_IMPORT_DB: | |
364 | case TK_M_IMPORT_CMDLINE: | |
365 | case TK_M_IMPORT_PARENT: | |
366 | case TK_M_RESULT: | |
367 | case TK_A_NAME: | |
368 | case TK_A_DEVLINK: | |
369 | case TK_A_OWNER: | |
370 | case TK_A_GROUP: | |
371 | case TK_A_MODE: | |
83cd6b75 KS |
372 | case TK_A_RUN_BUILTIN: |
373 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 374 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 375 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
376 | break; |
377 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 378 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
379 | break; |
380 | case TK_M_ATTR: | |
f4cf2e5b | 381 | case TK_M_SYSCTL: |
912541b0 KS |
382 | case TK_M_ATTRS: |
383 | case TK_M_ENV: | |
384 | case TK_A_ATTR: | |
f4cf2e5b | 385 | case TK_A_SYSCTL: |
912541b0 | 386 | case TK_A_ENV: |
9f6445e3 | 387 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 388 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
389 | break; |
390 | case TK_M_TAG: | |
391 | case TK_A_TAG: | |
9f6445e3 | 392 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
393 | break; |
394 | case TK_A_STRING_ESCAPE_NONE: | |
395 | case TK_A_STRING_ESCAPE_REPLACE: | |
396 | case TK_A_DB_PERSIST: | |
9f6445e3 | 397 | log_debug("%s", token_str(type)); |
912541b0 KS |
398 | break; |
399 | case TK_M_TEST: | |
9f6445e3 | 400 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 401 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
402 | break; |
403 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 404 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
405 | break; |
406 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 407 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
408 | break; |
409 | case TK_A_OWNER_ID: | |
9f6445e3 | 410 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
411 | break; |
412 | case TK_A_GROUP_ID: | |
9f6445e3 | 413 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
414 | break; |
415 | case TK_A_MODE_ID: | |
9f6445e3 | 416 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
417 | break; |
418 | case TK_A_STATIC_NODE: | |
9f6445e3 | 419 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 420 | break; |
c26547d6 | 421 | case TK_A_SECLABEL: |
9f6445e3 | 422 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 423 | break; |
912541b0 | 424 | case TK_A_GOTO: |
9f6445e3 | 425 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
426 | break; |
427 | case TK_END: | |
9f6445e3 | 428 | log_debug("* %s", token_str(type)); |
912541b0 KS |
429 | break; |
430 | case TK_M_PARENTS_MIN: | |
431 | case TK_M_PARENTS_MAX: | |
432 | case TK_M_MAX: | |
433 | case TK_UNSET: | |
9f6445e3 | 434 | log_debug("unknown type %u", type); |
912541b0 KS |
435 | break; |
436 | } | |
4052400f | 437 | } |
154a7b84 | 438 | |
9ec6e95b | 439 | static void dump_rules(struct udev_rules *rules) { |
912541b0 KS |
440 | unsigned int i; |
441 | ||
fa394301 | 442 | log_debug("dumping %u (%zu bytes) tokens, %zu (%zu bytes) strings", |
baa30fbc KS |
443 | rules->token_cur, |
444 | rules->token_cur * sizeof(struct token), | |
fa394301 LR |
445 | rules->strbuf->nodes_count, |
446 | rules->strbuf->len); | |
f168c273 | 447 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 448 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
449 | } |
450 | #else | |
4052400f KS |
451 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
452 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 453 | #endif /* DEBUG */ |
c7521974 | 454 | |
9ec6e95b | 455 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
456 | /* grow buffer if needed */ |
457 | if (rules->token_cur+1 >= rules->token_max) { | |
458 | struct token *tokens; | |
459 | unsigned int add; | |
460 | ||
461 | /* double the buffer size */ | |
462 | add = rules->token_max; | |
463 | if (add < 8) | |
464 | add = 8; | |
465 | ||
466 | tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); | |
467 | if (tokens == NULL) | |
468 | return -1; | |
912541b0 KS |
469 | rules->tokens = tokens; |
470 | rules->token_max += add; | |
471 | } | |
472 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
473 | rules->token_cur++; | |
474 | return 0; | |
c7521974 | 475 | } |
a27cd06c | 476 | |
9ec6e95b | 477 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
912541b0 | 478 | unsigned int i; |
23bf8dd7 | 479 | uid_t uid = 0; |
912541b0 | 480 | unsigned int off; |
23bf8dd7 | 481 | int r; |
912541b0 KS |
482 | |
483 | /* lookup, if we know it already */ | |
484 | for (i = 0; i < rules->uids_cur; i++) { | |
485 | off = rules->uids[i].name_off; | |
915bf0f6 | 486 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 487 | uid = rules->uids[i].uid; |
912541b0 KS |
488 | return uid; |
489 | } | |
490 | } | |
23bf8dd7 TG |
491 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL); |
492 | if (r < 0) { | |
493 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 494 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 495 | else |
279d3c9c | 496 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 | 497 | } |
912541b0 KS |
498 | |
499 | /* grow buffer if needed */ | |
500 | if (rules->uids_cur+1 >= rules->uids_max) { | |
501 | struct uid_gid *uids; | |
502 | unsigned int add; | |
503 | ||
504 | /* double the buffer size */ | |
505 | add = rules->uids_max; | |
506 | if (add < 1) | |
507 | add = 8; | |
508 | ||
509 | uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); | |
510 | if (uids == NULL) | |
511 | return uid; | |
912541b0 KS |
512 | rules->uids = uids; |
513 | rules->uids_max += add; | |
514 | } | |
515 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 516 | off = rules_add_string(rules, owner); |
912541b0 KS |
517 | if (off <= 0) |
518 | return uid; | |
519 | rules->uids[rules->uids_cur].name_off = off; | |
520 | rules->uids_cur++; | |
521 | return uid; | |
154a7b84 KS |
522 | } |
523 | ||
9ec6e95b | 524 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
912541b0 | 525 | unsigned int i; |
23bf8dd7 | 526 | gid_t gid = 0; |
912541b0 | 527 | unsigned int off; |
23bf8dd7 | 528 | int r; |
912541b0 KS |
529 | |
530 | /* lookup, if we know it already */ | |
531 | for (i = 0; i < rules->gids_cur; i++) { | |
532 | off = rules->gids[i].name_off; | |
915bf0f6 | 533 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 534 | gid = rules->gids[i].gid; |
912541b0 KS |
535 | return gid; |
536 | } | |
537 | } | |
23bf8dd7 TG |
538 | r = get_group_creds(&group, &gid); |
539 | if (r < 0) { | |
540 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 541 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 542 | else |
279d3c9c | 543 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 | 544 | } |
912541b0 KS |
545 | |
546 | /* grow buffer if needed */ | |
547 | if (rules->gids_cur+1 >= rules->gids_max) { | |
548 | struct uid_gid *gids; | |
549 | unsigned int add; | |
550 | ||
551 | /* double the buffer size */ | |
552 | add = rules->gids_max; | |
553 | if (add < 1) | |
554 | add = 8; | |
555 | ||
556 | gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); | |
557 | if (gids == NULL) | |
558 | return gid; | |
912541b0 KS |
559 | rules->gids = gids; |
560 | rules->gids_max += add; | |
561 | } | |
562 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 563 | off = rules_add_string(rules, group); |
912541b0 KS |
564 | if (off <= 0) |
565 | return gid; | |
566 | rules->gids[rules->gids_cur].name_off = off; | |
567 | rules->gids_cur++; | |
568 | return gid; | |
154a7b84 KS |
569 | } |
570 | ||
9ec6e95b | 571 | static int import_property_from_string(struct udev_device *dev, char *line) { |
912541b0 KS |
572 | char *key; |
573 | char *val; | |
574 | size_t len; | |
575 | ||
576 | /* find key */ | |
577 | key = line; | |
578 | while (isspace(key[0])) | |
579 | key++; | |
580 | ||
581 | /* comment or empty line */ | |
582 | if (key[0] == '#' || key[0] == '\0') | |
583 | return -1; | |
584 | ||
585 | /* split key/value */ | |
586 | val = strchr(key, '='); | |
587 | if (val == NULL) | |
588 | return -1; | |
589 | val[0] = '\0'; | |
590 | val++; | |
591 | ||
592 | /* find value */ | |
593 | while (isspace(val[0])) | |
594 | val++; | |
595 | ||
596 | /* terminate key */ | |
597 | len = strlen(key); | |
598 | if (len == 0) | |
599 | return -1; | |
600 | while (isspace(key[len-1])) | |
601 | len--; | |
602 | key[len] = '\0'; | |
603 | ||
604 | /* terminate value */ | |
605 | len = strlen(val); | |
606 | if (len == 0) | |
607 | return -1; | |
608 | while (isspace(val[len-1])) | |
609 | len--; | |
610 | val[len] = '\0'; | |
611 | ||
612 | if (len == 0) | |
613 | return -1; | |
614 | ||
615 | /* unquote */ | |
616 | if (val[0] == '"' || val[0] == '\'') { | |
617 | if (val[len-1] != val[0]) { | |
9f6445e3 | 618 | log_debug("inconsistent quoting: '%s', skip", line); |
912541b0 KS |
619 | return -1; |
620 | } | |
621 | val[len-1] = '\0'; | |
622 | val++; | |
623 | } | |
624 | ||
df546eb5 | 625 | udev_device_add_property(dev, key, val); |
0aa5b4d1 | 626 | |
912541b0 | 627 | return 0; |
be4bedd1 KS |
628 | } |
629 | ||
9ec6e95b | 630 | static int import_file_into_properties(struct udev_device *dev, const char *filename) { |
912541b0 KS |
631 | FILE *f; |
632 | char line[UTIL_LINE_SIZE]; | |
633 | ||
47ef94ac | 634 | f = fopen(filename, "re"); |
912541b0 KS |
635 | if (f == NULL) |
636 | return -1; | |
637 | while (fgets(line, sizeof(line), f) != NULL) | |
638 | import_property_from_string(dev, line); | |
639 | fclose(f); | |
640 | return 0; | |
bd0ed2ff KS |
641 | } |
642 | ||
dd5eddd2 KS |
643 | static int import_program_into_properties(struct udev_event *event, |
644 | usec_t timeout_usec, | |
67117413 | 645 | usec_t timeout_warn_usec, |
8314de1d | 646 | const char *program) { |
912541b0 KS |
647 | char result[UTIL_LINE_SIZE]; |
648 | char *line; | |
649 | int err; | |
650 | ||
bbf35206 | 651 | err = udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)); |
912541b0 KS |
652 | if (err < 0) |
653 | return err; | |
654 | ||
655 | line = result; | |
656 | while (line != NULL) { | |
657 | char *pos; | |
658 | ||
659 | pos = strchr(line, '\n'); | |
660 | if (pos != NULL) { | |
661 | pos[0] = '\0'; | |
662 | pos = &pos[1]; | |
663 | } | |
bbf35206 | 664 | import_property_from_string(event->dev, line); |
912541b0 KS |
665 | line = pos; |
666 | } | |
667 | return 0; | |
319c6700 KS |
668 | } |
669 | ||
9ec6e95b | 670 | static int import_parent_into_properties(struct udev_device *dev, const char *filter) { |
912541b0 KS |
671 | struct udev_device *dev_parent; |
672 | struct udev_list_entry *list_entry; | |
673 | ||
3b64e4d4 TG |
674 | assert(dev); |
675 | assert(filter); | |
676 | ||
912541b0 KS |
677 | dev_parent = udev_device_get_parent(dev); |
678 | if (dev_parent == NULL) | |
679 | return -1; | |
680 | ||
912541b0 KS |
681 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) { |
682 | const char *key = udev_list_entry_get_name(list_entry); | |
683 | const char *val = udev_list_entry_get_value(list_entry); | |
684 | ||
ece174c5 | 685 | if (fnmatch(filter, key, 0) == 0) |
df546eb5 | 686 | udev_device_add_property(dev, key, val); |
912541b0 KS |
687 | } |
688 | return 0; | |
e2ecb34f KS |
689 | } |
690 | ||
f4850a1d ZJS |
691 | static void attr_subst_subdir(char *attr, size_t len) { |
692 | const char *pos, *tail, *path; | |
693 | _cleanup_closedir_ DIR *dir = NULL; | |
694 | struct dirent *dent; | |
695 | ||
696 | pos = strstr(attr, "/*/"); | |
697 | if (!pos) | |
698 | return; | |
699 | ||
700 | tail = pos + 2; | |
701 | path = strndupa(attr, pos - attr + 1); /* include slash at end */ | |
702 | dir = opendir(path); | |
703 | if (dir == NULL) | |
704 | return; | |
705 | ||
706 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) | |
707 | if (dent->d_name[0] != '.') { | |
916a8d43 | 708 | char n[strlen(dent->d_name) + strlen(tail) + 1]; |
f4850a1d | 709 | |
916a8d43 ZJS |
710 | strscpyl(n, sizeof n, dent->d_name, tail, NULL); |
711 | if (faccessat(dirfd(dir), n, F_OK, 0) == 0) { | |
f4850a1d ZJS |
712 | strscpyl(attr, len, path, n, NULL); |
713 | break; | |
912541b0 | 714 | } |
912541b0 | 715 | } |
0ea5e96e KS |
716 | } |
717 | ||
9ec6e95b | 718 | static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
719 | char *linepos; |
720 | char *temp; | |
721 | ||
722 | linepos = *line; | |
723 | if (linepos == NULL || linepos[0] == '\0') | |
724 | return -1; | |
725 | ||
726 | /* skip whitespace */ | |
727 | while (isspace(linepos[0]) || linepos[0] == ',') | |
728 | linepos++; | |
729 | ||
730 | /* get the key */ | |
731 | if (linepos[0] == '\0') | |
732 | return -1; | |
733 | *key = linepos; | |
734 | ||
735 | for (;;) { | |
736 | linepos++; | |
737 | if (linepos[0] == '\0') | |
738 | return -1; | |
739 | if (isspace(linepos[0])) | |
740 | break; | |
741 | if (linepos[0] == '=') | |
742 | break; | |
8e3ba377 | 743 | if ((linepos[0] == '+') || (linepos[0] == '-') || (linepos[0] == '!') || (linepos[0] == ':')) |
912541b0 KS |
744 | if (linepos[1] == '=') |
745 | break; | |
746 | } | |
747 | ||
748 | /* remember end of key */ | |
749 | temp = linepos; | |
750 | ||
751 | /* skip whitespace after key */ | |
752 | while (isspace(linepos[0])) | |
753 | linepos++; | |
754 | if (linepos[0] == '\0') | |
755 | return -1; | |
756 | ||
757 | /* get operation type */ | |
758 | if (linepos[0] == '=' && linepos[1] == '=') { | |
759 | *op = OP_MATCH; | |
760 | linepos += 2; | |
761 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
762 | *op = OP_NOMATCH; | |
763 | linepos += 2; | |
764 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
765 | *op = OP_ADD; | |
766 | linepos += 2; | |
8e3ba377 DH |
767 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
768 | *op = OP_REMOVE; | |
769 | linepos += 2; | |
912541b0 KS |
770 | } else if (linepos[0] == '=') { |
771 | *op = OP_ASSIGN; | |
772 | linepos++; | |
773 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
774 | *op = OP_ASSIGN_FINAL; | |
775 | linepos += 2; | |
776 | } else | |
777 | return -1; | |
778 | ||
779 | /* terminate key */ | |
780 | temp[0] = '\0'; | |
781 | ||
782 | /* skip whitespace after operator */ | |
783 | while (isspace(linepos[0])) | |
784 | linepos++; | |
785 | if (linepos[0] == '\0') | |
786 | return -1; | |
787 | ||
788 | /* get the value */ | |
789 | if (linepos[0] == '"') | |
790 | linepos++; | |
791 | else | |
792 | return -1; | |
793 | *value = linepos; | |
794 | ||
795 | /* terminate */ | |
796 | temp = strchr(linepos, '"'); | |
797 | if (!temp) | |
798 | return -1; | |
799 | temp[0] = '\0'; | |
800 | temp++; | |
912541b0 KS |
801 | |
802 | /* move line to next key */ | |
803 | *line = temp; | |
804 | return 0; | |
6880b25d | 805 | } |
95776dc6 | 806 | |
6880b25d | 807 | /* extract possible KEY{attr} */ |
9ec6e95b | 808 | static const char *get_key_attribute(struct udev *udev, char *str) { |
912541b0 KS |
809 | char *pos; |
810 | char *attr; | |
811 | ||
812 | attr = strchr(str, '{'); | |
813 | if (attr != NULL) { | |
814 | attr++; | |
815 | pos = strchr(attr, '}'); | |
816 | if (pos == NULL) { | |
9f6445e3 | 817 | log_error("missing closing brace for format"); |
912541b0 KS |
818 | return NULL; |
819 | } | |
820 | pos[0] = '\0'; | |
912541b0 KS |
821 | return attr; |
822 | } | |
823 | return NULL; | |
6880b25d | 824 | } |
95776dc6 | 825 | |
19a8e656 ZJS |
826 | static void rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
827 | enum operation_type op, | |
828 | const char *value, const void *data) { | |
829 | struct token *token = rule_tmp->token + rule_tmp->token_cur; | |
912541b0 KS |
830 | const char *attr = NULL; |
831 | ||
19a8e656 | 832 | assert(rule_tmp->token_cur < ELEMENTSOF(rule_tmp->token)); |
29804cc1 | 833 | memzero(token, sizeof(struct token)); |
912541b0 KS |
834 | |
835 | switch (type) { | |
836 | case TK_M_ACTION: | |
837 | case TK_M_DEVPATH: | |
838 | case TK_M_KERNEL: | |
839 | case TK_M_SUBSYSTEM: | |
840 | case TK_M_DRIVER: | |
841 | case TK_M_WAITFOR: | |
842 | case TK_M_DEVLINK: | |
843 | case TK_M_NAME: | |
844 | case TK_M_KERNELS: | |
845 | case TK_M_SUBSYSTEMS: | |
846 | case TK_M_DRIVERS: | |
847 | case TK_M_TAGS: | |
848 | case TK_M_PROGRAM: | |
849 | case TK_M_IMPORT_FILE: | |
850 | case TK_M_IMPORT_PROG: | |
851 | case TK_M_IMPORT_DB: | |
852 | case TK_M_IMPORT_CMDLINE: | |
853 | case TK_M_IMPORT_PARENT: | |
854 | case TK_M_RESULT: | |
855 | case TK_A_OWNER: | |
856 | case TK_A_GROUP: | |
857 | case TK_A_MODE: | |
8a173387 | 858 | case TK_A_DEVLINK: |
912541b0 KS |
859 | case TK_A_NAME: |
860 | case TK_A_GOTO: | |
861 | case TK_M_TAG: | |
862 | case TK_A_TAG: | |
d6f116a7 | 863 | case TK_A_STATIC_NODE: |
915bf0f6 | 864 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
865 | break; |
866 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 867 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
868 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
869 | break; | |
870 | case TK_M_ENV: | |
871 | case TK_M_ATTR: | |
f4cf2e5b | 872 | case TK_M_SYSCTL: |
912541b0 KS |
873 | case TK_M_ATTRS: |
874 | case TK_A_ATTR: | |
f4cf2e5b | 875 | case TK_A_SYSCTL: |
912541b0 | 876 | case TK_A_ENV: |
c26547d6 | 877 | case TK_A_SECLABEL: |
912541b0 | 878 | attr = data; |
915bf0f6 KS |
879 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
880 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 881 | break; |
912541b0 | 882 | case TK_M_TEST: |
915bf0f6 | 883 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
884 | if (data != NULL) |
885 | token->key.mode = *(mode_t *)data; | |
886 | break; | |
887 | case TK_A_STRING_ESCAPE_NONE: | |
888 | case TK_A_STRING_ESCAPE_REPLACE: | |
889 | case TK_A_DB_PERSIST: | |
890 | break; | |
83cd6b75 | 891 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 892 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 893 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 894 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
895 | break; |
896 | case TK_A_INOTIFY_WATCH: | |
897 | case TK_A_DEVLINK_PRIO: | |
898 | token->key.devlink_prio = *(int *)data; | |
899 | break; | |
900 | case TK_A_OWNER_ID: | |
901 | token->key.uid = *(uid_t *)data; | |
902 | break; | |
903 | case TK_A_GROUP_ID: | |
904 | token->key.gid = *(gid_t *)data; | |
905 | break; | |
906 | case TK_A_MODE_ID: | |
907 | token->key.mode = *(mode_t *)data; | |
908 | break; | |
912541b0 KS |
909 | case TK_RULE: |
910 | case TK_M_PARENTS_MIN: | |
911 | case TK_M_PARENTS_MAX: | |
912 | case TK_M_MAX: | |
913 | case TK_END: | |
914 | case TK_UNSET: | |
19a8e656 | 915 | assert_not_reached("wrong type"); |
912541b0 KS |
916 | } |
917 | ||
918 | if (value != NULL && type < TK_M_MAX) { | |
919 | /* check if we need to split or call fnmatch() while matching rules */ | |
920 | enum string_glob_type glob; | |
921 | int has_split; | |
922 | int has_glob; | |
923 | ||
924 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 925 | has_glob = string_is_glob(value); |
912541b0 KS |
926 | if (has_split && has_glob) { |
927 | glob = GL_SPLIT_GLOB; | |
928 | } else if (has_split) { | |
929 | glob = GL_SPLIT; | |
930 | } else if (has_glob) { | |
33502ffe | 931 | if (streq(value, "?*")) |
912541b0 KS |
932 | glob = GL_SOMETHING; |
933 | else | |
934 | glob = GL_GLOB; | |
935 | } else { | |
936 | glob = GL_PLAIN; | |
937 | } | |
938 | token->key.glob = glob; | |
939 | } | |
940 | ||
941 | if (value != NULL && type > TK_M_MAX) { | |
942 | /* check if assigned value has substitution chars */ | |
943 | if (value[0] == '[') | |
944 | token->key.subst = SB_SUBSYS; | |
945 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
946 | token->key.subst = SB_FORMAT; | |
947 | else | |
948 | token->key.subst = SB_NONE; | |
949 | } | |
950 | ||
951 | if (attr != NULL) { | |
d6f116a7 | 952 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
953 | if (attr[0] == '[') |
954 | token->key.attrsubst = SB_SUBSYS; | |
955 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
956 | token->key.attrsubst = SB_FORMAT; | |
957 | else | |
958 | token->key.attrsubst = SB_NONE; | |
959 | } | |
960 | ||
961 | token->key.type = type; | |
962 | token->key.op = op; | |
963 | rule_tmp->token_cur++; | |
6880b25d | 964 | } |
e57e7bc1 | 965 | |
9ec6e95b | 966 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
912541b0 KS |
967 | unsigned int i; |
968 | unsigned int start = 0; | |
969 | unsigned int end = rule_tmp->token_cur; | |
970 | ||
971 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
972 | enum token_type next_val = TK_UNSET; | |
973 | unsigned int next_idx = 0; | |
974 | unsigned int j; | |
975 | ||
976 | /* find smallest value */ | |
977 | for (j = start; j < end; j++) { | |
978 | if (rule_tmp->token[j].type == TK_UNSET) | |
979 | continue; | |
980 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
981 | next_val = rule_tmp->token[j].type; | |
982 | next_idx = j; | |
983 | } | |
984 | } | |
985 | ||
986 | /* add token and mark done */ | |
987 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
988 | return -1; | |
989 | rule_tmp->token[next_idx].type = TK_UNSET; | |
990 | ||
991 | /* shrink range */ | |
992 | if (next_idx == start) | |
993 | start++; | |
994 | if (next_idx+1 == end) | |
995 | end--; | |
996 | } | |
997 | return 0; | |
724257d9 GKH |
998 | } |
999 | ||
19a8e656 ZJS |
1000 | #define LOG_RULE_ERROR(fmt, ...) log_error("Invalid rule %s:%u: " fmt, filename, lineno, ##__VA_ARGS__) |
1001 | #define LOG_RULE_WARNING(fmt, ...) log_warning("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1002 | #define LOG_RULE_DEBUG(fmt, ...) log_debug("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1003 | #define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; } | |
1004 | ||
4fd6af76 ZJS |
1005 | static void add_rule(struct udev_rules *rules, char *line, |
1006 | const char *filename, unsigned int filename_off, unsigned int lineno) { | |
912541b0 | 1007 | char *linepos; |
04a9d3a0 | 1008 | const char *attr; |
84198c18 TG |
1009 | struct rule_tmp rule_tmp = { |
1010 | .rules = rules, | |
1011 | .rule.type = TK_RULE, | |
1012 | }; | |
912541b0 | 1013 | |
775f8b3c KS |
1014 | /* the offset in the rule is limited to unsigned short */ |
1015 | if (filename_off < USHRT_MAX) | |
1016 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1017 | rule_tmp.rule.rule.filename_line = lineno; |
1018 | ||
1019 | linepos = line; | |
1020 | for (;;) { | |
1021 | char *key; | |
1022 | char *value; | |
1023 | enum operation_type op; | |
1024 | ||
e736cf35 | 1025 | if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1026 | /* Avoid erroring on trailing whitespace. This is probably rare |
1027 | * so save the work for the error case instead of always trying | |
1028 | * to strip the trailing whitespace with strstrip(). */ | |
1029 | while (isblank(*linepos)) | |
1030 | linepos++; | |
1031 | ||
e736cf35 DR |
1032 | /* If we aren't at the end of the line, this is a parsing error. |
1033 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1034 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1035 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1036 | _cleanup_free_ char *tmp; |
1037 | ||
1038 | tmp = cescape(buf); | |
ff49bc32 | 1039 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1040 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1041 | if (*linepos == '#') |
75716dd8 | 1042 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1043 | } |
912541b0 | 1044 | break; |
e736cf35 | 1045 | } |
912541b0 | 1046 | |
19a8e656 ZJS |
1047 | if (rule_tmp.token_cur >= ELEMENTSOF(rule_tmp.token)) |
1048 | LOG_AND_RETURN("temporary rule array too small, aborting event processing with %u items", rule_tmp.token_cur); | |
1049 | ||
33502ffe | 1050 | if (streq(key, "ACTION")) { |
19a8e656 ZJS |
1051 | if (op > OP_MATCH_MAX) |
1052 | LOG_AND_RETURN("invalid %s operation", key); | |
1053 | ||
912541b0 | 1054 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); |
912541b0 | 1055 | |
99f16bb8 | 1056 | } else if (streq(key, "DEVPATH")) { |
19a8e656 ZJS |
1057 | if (op > OP_MATCH_MAX) |
1058 | LOG_AND_RETURN("invalid %s operation", key); | |
1059 | ||
912541b0 | 1060 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); |
912541b0 | 1061 | |
99f16bb8 | 1062 | } else if (streq(key, "KERNEL")) { |
19a8e656 ZJS |
1063 | if (op > OP_MATCH_MAX) |
1064 | LOG_AND_RETURN("invalid %s operation", key); | |
1065 | ||
912541b0 | 1066 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); |
912541b0 | 1067 | |
99f16bb8 | 1068 | } else if (streq(key, "SUBSYSTEM")) { |
19a8e656 ZJS |
1069 | if (op > OP_MATCH_MAX) |
1070 | LOG_AND_RETURN("invalid %s operation", key); | |
1071 | ||
912541b0 | 1072 | /* bus, class, subsystem events should all be the same */ |
99f16bb8 ZJS |
1073 | if (STR_IN_SET(value, "subsystem", "bus", "class")) { |
1074 | if (!streq(value, "subsystem")) | |
19a8e656 ZJS |
1075 | LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value); |
1076 | ||
912541b0 KS |
1077 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
1078 | } else | |
1079 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
912541b0 | 1080 | |
99f16bb8 | 1081 | } else if (streq(key, "DRIVER")) { |
19a8e656 ZJS |
1082 | if (op > OP_MATCH_MAX) |
1083 | LOG_AND_RETURN("invalid %s operation", key); | |
1084 | ||
912541b0 | 1085 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); |
912541b0 | 1086 | |
99f16bb8 | 1087 | } else if (startswith(key, "ATTR{")) { |
f8294e41 | 1088 | attr = get_key_attribute(rules->udev, key + strlen("ATTR")); |
19a8e656 ZJS |
1089 | if (attr == NULL) |
1090 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1091 | ||
1092 | if (op == OP_REMOVE) | |
1093 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1094 | ||
f4cf2e5b | 1095 | if (op < OP_MATCH_MAX) |
912541b0 | 1096 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1097 | else |
912541b0 | 1098 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b | 1099 | |
99f16bb8 | 1100 | } else if (startswith(key, "SYSCTL{")) { |
f4cf2e5b | 1101 | attr = get_key_attribute(rules->udev, key + strlen("SYSCTL")); |
19a8e656 ZJS |
1102 | if (attr == NULL) |
1103 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1104 | ||
1105 | if (op == OP_REMOVE) | |
1106 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1107 | ||
f4cf2e5b KS |
1108 | if (op < OP_MATCH_MAX) |
1109 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1110 | else | |
1111 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 | 1112 | |
99f16bb8 | 1113 | } else if (startswith(key, "SECLABEL{")) { |
f8294e41 | 1114 | attr = get_key_attribute(rules->udev, key + strlen("SECLABEL")); |
19a8e656 ZJS |
1115 | if (attr == NULL) |
1116 | LOG_AND_RETURN("error parsing %s attribute", "SECLABEL"); | |
1117 | ||
1118 | if (op == OP_REMOVE) | |
1119 | LOG_AND_RETURN("invalid %s operation", "SECLABEL"); | |
c26547d6 KS |
1120 | |
1121 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
c26547d6 | 1122 | |
99f16bb8 | 1123 | } else if (streq(key, "KERNELS")) { |
19a8e656 ZJS |
1124 | if (op > OP_MATCH_MAX) |
1125 | LOG_AND_RETURN("invalid %s operation", key); | |
1126 | ||
912541b0 | 1127 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); |
912541b0 | 1128 | |
99f16bb8 | 1129 | } else if (streq(key, "SUBSYSTEMS")) { |
19a8e656 ZJS |
1130 | if (op > OP_MATCH_MAX) |
1131 | LOG_AND_RETURN("invalid %s operation", key); | |
1132 | ||
912541b0 | 1133 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); |
912541b0 | 1134 | |
99f16bb8 | 1135 | } else if (streq(key, "DRIVERS")) { |
19a8e656 ZJS |
1136 | if (op > OP_MATCH_MAX) |
1137 | LOG_AND_RETURN("invalid %s operation", key); | |
1138 | ||
912541b0 | 1139 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); |
912541b0 | 1140 | |
99f16bb8 | 1141 | } else if (startswith(key, "ATTRS{")) { |
19a8e656 ZJS |
1142 | if (op > OP_MATCH_MAX) |
1143 | LOG_AND_RETURN("invalid %s operation", "ATTRS"); | |
1144 | ||
f8294e41 | 1145 | attr = get_key_attribute(rules->udev, key + strlen("ATTRS")); |
19a8e656 ZJS |
1146 | if (attr == NULL) |
1147 | LOG_AND_RETURN("error parsing %s attribute", "ATTRS"); | |
1148 | ||
33502ffe | 1149 | if (startswith(attr, "device/")) |
19a8e656 ZJS |
1150 | LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix"); |
1151 | if (strstr(attr, "../") != NULL) | |
1152 | LOG_RULE_WARNING("direct reference to parent sysfs directory, may break in future kernels; please fix"); | |
912541b0 | 1153 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); |
912541b0 | 1154 | |
99f16bb8 | 1155 | } else if (streq(key, "TAGS")) { |
19a8e656 ZJS |
1156 | if (op > OP_MATCH_MAX) |
1157 | LOG_AND_RETURN("invalid %s operation", key); | |
1158 | ||
912541b0 | 1159 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); |
912541b0 | 1160 | |
99f16bb8 | 1161 | } else if (startswith(key, "ENV{")) { |
f8294e41 | 1162 | attr = get_key_attribute(rules->udev, key + strlen("ENV")); |
19a8e656 ZJS |
1163 | if (attr == NULL) |
1164 | LOG_AND_RETURN("error parsing %s attribute", "ENV"); | |
1165 | ||
1166 | if (op == OP_REMOVE) | |
1167 | LOG_AND_RETURN("invalid %s operation", "ENV"); | |
1168 | ||
1169 | if (op < OP_MATCH_MAX) | |
1170 | rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr); | |
1171 | else { | |
99f16bb8 ZJS |
1172 | if (STR_IN_SET(attr, |
1173 | "ACTION", | |
1174 | "SUBSYSTEM", | |
1175 | "DEVTYPE", | |
1176 | "MAJOR", | |
1177 | "MINOR", | |
1178 | "DRIVER", | |
1179 | "IFINDEX", | |
1180 | "DEVNAME", | |
1181 | "DEVLINKS", | |
1182 | "DEVPATH", | |
19a8e656 ZJS |
1183 | "TAGS")) |
1184 | LOG_AND_RETURN("invalid ENV attribute, '%s' cannot be set", attr); | |
1185 | ||
1186 | rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr); | |
912541b0 | 1187 | } |
912541b0 | 1188 | |
99f16bb8 | 1189 | } else if (streq(key, "TAG")) { |
912541b0 KS |
1190 | if (op < OP_MATCH_MAX) |
1191 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1192 | else | |
1193 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
912541b0 | 1194 | |
99f16bb8 | 1195 | } else if (streq(key, "PROGRAM")) { |
19a8e656 ZJS |
1196 | if (op == OP_REMOVE) |
1197 | LOG_AND_RETURN("invalid %s operation", key); | |
1198 | ||
912541b0 | 1199 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
912541b0 | 1200 | |
99f16bb8 | 1201 | } else if (streq(key, "RESULT")) { |
19a8e656 ZJS |
1202 | if (op > OP_MATCH_MAX) |
1203 | LOG_AND_RETURN("invalid %s operation", key); | |
1204 | ||
912541b0 | 1205 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); |
912541b0 | 1206 | |
99f16bb8 | 1207 | } else if (startswith(key, "IMPORT")) { |
f8294e41 | 1208 | attr = get_key_attribute(rules->udev, key + strlen("IMPORT")); |
912541b0 | 1209 | if (attr == NULL) { |
19a8e656 | 1210 | LOG_RULE_WARNING("ignoring IMPORT{} with missing type"); |
912541b0 KS |
1211 | continue; |
1212 | } | |
19a8e656 ZJS |
1213 | if (op == OP_REMOVE) |
1214 | LOG_AND_RETURN("invalid %s operation", "IMPORT"); | |
1215 | ||
33502ffe | 1216 | if (streq(attr, "program")) { |
912541b0 KS |
1217 | /* find known built-in command */ |
1218 | if (value[0] != '/') { | |
19a8e656 | 1219 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1220 | |
912541b0 | 1221 | if (cmd < UDEV_BUILTIN_MAX) { |
19a8e656 | 1222 | LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value); |
912541b0 KS |
1223 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1224 | continue; | |
1225 | } | |
1226 | } | |
912541b0 | 1227 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1228 | } else if (streq(attr, "builtin")) { |
19a8e656 | 1229 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1230 | |
19a8e656 ZJS |
1231 | if (cmd >= UDEV_BUILTIN_MAX) |
1232 | LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown", value); | |
912541b0 | 1233 | else |
19a8e656 ZJS |
1234 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1235 | } else if (streq(attr, "file")) | |
912541b0 | 1236 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
19a8e656 | 1237 | else if (streq(attr, "db")) |
912541b0 | 1238 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
19a8e656 | 1239 | else if (streq(attr, "cmdline")) |
912541b0 | 1240 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
19a8e656 | 1241 | else if (streq(attr, "parent")) |
912541b0 | 1242 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
19a8e656 ZJS |
1243 | else |
1244 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "IMPORT", attr); | |
912541b0 | 1245 | |
99f16bb8 | 1246 | } else if (startswith(key, "TEST")) { |
912541b0 KS |
1247 | mode_t mode = 0; |
1248 | ||
19a8e656 ZJS |
1249 | if (op > OP_MATCH_MAX) |
1250 | LOG_AND_RETURN("invalid %s operation", "TEST"); | |
1251 | ||
f8294e41 | 1252 | attr = get_key_attribute(rules->udev, key + strlen("TEST")); |
912541b0 KS |
1253 | if (attr != NULL) { |
1254 | mode = strtol(attr, NULL, 8); | |
1255 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
99f16bb8 | 1256 | } else |
912541b0 | 1257 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); |
912541b0 | 1258 | |
99f16bb8 | 1259 | } else if (startswith(key, "RUN")) { |
f8294e41 | 1260 | attr = get_key_attribute(rules->udev, key + strlen("RUN")); |
83cd6b75 KS |
1261 | if (attr == NULL) |
1262 | attr = "program"; | |
19a8e656 ZJS |
1263 | if (op == OP_REMOVE) |
1264 | LOG_AND_RETURN("invalid %s operation", "RUN"); | |
83cd6b75 | 1265 | |
33502ffe | 1266 | if (streq(attr, "builtin")) { |
19a8e656 | 1267 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
83cd6b75 KS |
1268 | |
1269 | if (cmd < UDEV_BUILTIN_MAX) | |
1270 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
1271 | else | |
19a8e656 | 1272 | LOG_RULE_ERROR("RUN{builtin}: '%s' unknown", value); |
33502ffe | 1273 | } else if (streq(attr, "program")) { |
99f16bb8 | 1274 | const enum udev_builtin_cmd cmd = UDEV_BUILTIN_MAX; |
83cd6b75 | 1275 | |
83cd6b75 | 1276 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
99f16bb8 | 1277 | } else |
19a8e656 | 1278 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "RUN", attr); |
912541b0 | 1279 | |
99f16bb8 | 1280 | } else if (streq(key, "LABEL")) { |
19a8e656 ZJS |
1281 | if (op == OP_REMOVE) |
1282 | LOG_AND_RETURN("invalid %s operation", key); | |
1283 | ||
915bf0f6 | 1284 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 | 1285 | |
99f16bb8 | 1286 | } else if (streq(key, "GOTO")) { |
19a8e656 ZJS |
1287 | if (op == OP_REMOVE) |
1288 | LOG_AND_RETURN("invalid %s operation", key); | |
1289 | ||
912541b0 | 1290 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
912541b0 | 1291 | |
99f16bb8 | 1292 | } else if (startswith(key, "NAME")) { |
19a8e656 ZJS |
1293 | if (op == OP_REMOVE) |
1294 | LOG_AND_RETURN("invalid %s operation", key); | |
1295 | ||
1296 | if (op < OP_MATCH_MAX) | |
912541b0 | 1297 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); |
19a8e656 | 1298 | else { |
33502ffe | 1299 | if (streq(value, "%k")) { |
19a8e656 | 1300 | LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove"); |
912541b0 KS |
1301 | continue; |
1302 | } | |
19a8e656 ZJS |
1303 | if (isempty(value)) { |
1304 | LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove"); | |
912541b0 KS |
1305 | continue; |
1306 | } | |
1307 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1308 | } | |
1309 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1310 | |
99f16bb8 | 1311 | } else if (streq(key, "SYMLINK")) { |
19a8e656 ZJS |
1312 | if (op == OP_REMOVE) |
1313 | LOG_AND_RETURN("invalid %s operation", key); | |
1314 | ||
8a173387 | 1315 | if (op < OP_MATCH_MAX) |
912541b0 | 1316 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1317 | else |
1318 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 | 1319 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1320 | |
99f16bb8 | 1321 | } else if (streq(key, "OWNER")) { |
912541b0 KS |
1322 | uid_t uid; |
1323 | char *endptr; | |
1324 | ||
19a8e656 ZJS |
1325 | if (op == OP_REMOVE) |
1326 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1327 | |
912541b0 | 1328 | uid = strtoul(value, &endptr, 10); |
19a8e656 | 1329 | if (endptr[0] == '\0') |
912541b0 | 1330 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
19a8e656 | 1331 | else if (rules->resolve_names > 0 && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1332 | uid = add_uid(rules, value); |
1333 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
1f6b4113 | 1334 | } else if (rules->resolve_names >= 0) |
912541b0 | 1335 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1336 | |
912541b0 | 1337 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1338 | |
99f16bb8 | 1339 | } else if (streq(key, "GROUP")) { |
912541b0 KS |
1340 | gid_t gid; |
1341 | char *endptr; | |
1342 | ||
19a8e656 ZJS |
1343 | if (op == OP_REMOVE) |
1344 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1345 | |
912541b0 | 1346 | gid = strtoul(value, &endptr, 10); |
19a8e656 | 1347 | if (endptr[0] == '\0') |
912541b0 | 1348 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
19a8e656 | 1349 | else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1350 | gid = add_gid(rules, value); |
1351 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
1f6b4113 | 1352 | } else if (rules->resolve_names >= 0) |
912541b0 | 1353 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1354 | |
912541b0 | 1355 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1356 | |
99f16bb8 | 1357 | } else if (streq(key, "MODE")) { |
912541b0 KS |
1358 | mode_t mode; |
1359 | char *endptr; | |
1360 | ||
19a8e656 ZJS |
1361 | if (op == OP_REMOVE) |
1362 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1363 | |
912541b0 KS |
1364 | mode = strtol(value, &endptr, 8); |
1365 | if (endptr[0] == '\0') | |
1366 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1367 | else | |
1368 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1369 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1370 | |
99f16bb8 | 1371 | } else if (streq(key, "OPTIONS")) { |
912541b0 KS |
1372 | const char *pos; |
1373 | ||
19a8e656 ZJS |
1374 | if (op == OP_REMOVE) |
1375 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1376 | |
912541b0 KS |
1377 | pos = strstr(value, "link_priority="); |
1378 | if (pos != NULL) { | |
19a8e656 | 1379 | int prio = atoi(pos + strlen("link_priority=")); |
912541b0 KS |
1380 | |
1381 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1382 | } |
1383 | ||
9f20a8a3 | 1384 | pos = strstr(value, "string_escape="); |
912541b0 | 1385 | if (pos != NULL) { |
19a8e656 | 1386 | pos += strlen("string_escape="); |
33502ffe | 1387 | if (startswith(pos, "none")) |
912541b0 | 1388 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1389 | else if (startswith(pos, "replace")) |
912541b0 KS |
1390 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1391 | } | |
1392 | ||
1393 | pos = strstr(value, "db_persist"); | |
1394 | if (pos != NULL) | |
1395 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1396 | ||
1397 | pos = strstr(value, "nowatch"); | |
1398 | if (pos != NULL) { | |
1399 | const int off = 0; | |
1400 | ||
1401 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); | |
912541b0 KS |
1402 | } else { |
1403 | pos = strstr(value, "watch"); | |
1404 | if (pos != NULL) { | |
1405 | const int on = 1; | |
1406 | ||
1407 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); | |
912541b0 KS |
1408 | } |
1409 | } | |
1410 | ||
1411 | pos = strstr(value, "static_node="); | |
1412 | if (pos != NULL) { | |
19a8e656 ZJS |
1413 | pos += strlen("static_node="); |
1414 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL); | |
912541b0 KS |
1415 | rule_tmp.rule.rule.has_static_node = true; |
1416 | } | |
1417 | ||
19a8e656 ZJS |
1418 | } else |
1419 | LOG_AND_RETURN("unknown key '%s'", key); | |
912541b0 KS |
1420 | } |
1421 | ||
19a8e656 | 1422 | /* add rule token and sort tokens */ |
912541b0 | 1423 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; |
19a8e656 ZJS |
1424 | if (add_token(rules, &rule_tmp.rule) != 0 || sort_token(rules, &rule_tmp) != 0) |
1425 | LOG_RULE_ERROR("failed to add rule token"); | |
c7521974 KS |
1426 | } |
1427 | ||
9ec6e95b | 1428 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1429 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 | 1430 | unsigned int first_token; |
775f8b3c | 1431 | unsigned int filename_off; |
912541b0 KS |
1432 | char line[UTIL_LINE_SIZE]; |
1433 | int line_nr = 0; | |
1434 | unsigned int i; | |
1435 | ||
ed88bcfb ZJS |
1436 | f = fopen(filename, "re"); |
1437 | if (!f) { | |
1438 | if (errno == ENOENT) | |
1439 | return 0; | |
1440 | else | |
1441 | return -errno; | |
775f8b3c | 1442 | } |
912541b0 | 1443 | |
ed88bcfb ZJS |
1444 | if (null_or_empty_fd(fileno(f))) { |
1445 | log_debug("Skipping empty file: %s", filename); | |
1446 | return 0; | |
1447 | } else | |
1448 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1449 | |
1450 | first_token = rules->token_cur; | |
915bf0f6 | 1451 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1452 | |
1453 | while (fgets(line, sizeof(line), f) != NULL) { | |
1454 | char *key; | |
1455 | size_t len; | |
1456 | ||
1457 | /* skip whitespace */ | |
1458 | line_nr++; | |
1459 | key = line; | |
1460 | while (isspace(key[0])) | |
1461 | key++; | |
1462 | ||
1463 | /* comment */ | |
1464 | if (key[0] == '#') | |
1465 | continue; | |
1466 | ||
1467 | len = strlen(line); | |
1468 | if (len < 3) | |
1469 | continue; | |
1470 | ||
1471 | /* continue reading if backslash+newline is found */ | |
1472 | while (line[len-2] == '\\') { | |
1473 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1474 | break; | |
1475 | if (strlen(&line[len-2]) < 2) | |
1476 | break; | |
1477 | line_nr++; | |
1478 | len = strlen(line); | |
1479 | } | |
1480 | ||
1481 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1482 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1483 | continue; |
1484 | } | |
1485 | add_rule(rules, key, filename, filename_off, line_nr); | |
1486 | } | |
912541b0 KS |
1487 | |
1488 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1489 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1490 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1491 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
912541b0 KS |
1492 | unsigned int j; |
1493 | ||
1494 | for (j = i+1; j < rules->token_cur; j++) { | |
1495 | if (rules->tokens[j].type != TK_RULE) | |
1496 | continue; | |
1497 | if (rules->tokens[j].rule.label_off == 0) | |
1498 | continue; | |
915bf0f6 | 1499 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1500 | continue; |
1501 | rules->tokens[i].key.rule_goto = j; | |
1502 | break; | |
1503 | } | |
1504 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1505 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1506 | } |
1507 | } | |
1508 | return 0; | |
c7521974 KS |
1509 | } |
1510 | ||
9ec6e95b | 1511 | struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { |
912541b0 KS |
1512 | struct udev_rules *rules; |
1513 | struct udev_list file_list; | |
912541b0 | 1514 | struct token end_token; |
775f8b3c KS |
1515 | char **files, **f; |
1516 | int r; | |
912541b0 | 1517 | |
955d98c9 | 1518 | rules = new0(struct udev_rules, 1); |
912541b0 KS |
1519 | if (rules == NULL) |
1520 | return NULL; | |
1521 | rules->udev = udev; | |
1522 | rules->resolve_names = resolve_names; | |
1523 | udev_list_init(udev, &file_list, true); | |
1524 | ||
1525 | /* init token array and string buffer */ | |
1526 | rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); | |
0820a4f0 VP |
1527 | if (rules->tokens == NULL) |
1528 | return udev_rules_unref(rules); | |
912541b0 KS |
1529 | rules->token_max = PREALLOC_TOKEN; |
1530 | ||
915bf0f6 KS |
1531 | rules->strbuf = strbuf_new(); |
1532 | if (!rules->strbuf) | |
0820a4f0 VP |
1533 | return udev_rules_unref(rules); |
1534 | ||
3b8c1cb0 KS |
1535 | udev_rules_check_timestamp(rules); |
1536 | ||
2ad8416d | 1537 | r = conf_files_list_strv(&files, ".rules", NULL, rules_dirs); |
775f8b3c | 1538 | if (r < 0) { |
da927ba9 | 1539 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1540 | return udev_rules_unref(rules); |
912541b0 KS |
1541 | } |
1542 | ||
775f8b3c KS |
1543 | /* |
1544 | * The offset value in the rules strct is limited; add all | |
1545 | * rules file names to the beginning of the string buffer. | |
1546 | */ | |
1547 | STRV_FOREACH(f, files) | |
915bf0f6 | 1548 | rules_add_string(rules, *f); |
912541b0 | 1549 | |
775f8b3c KS |
1550 | STRV_FOREACH(f, files) |
1551 | parse_file(rules, *f); | |
1552 | ||
1553 | strv_free(files); | |
912541b0 | 1554 | |
29804cc1 | 1555 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1556 | end_token.type = TK_END; |
1557 | add_token(rules, &end_token); | |
9f6445e3 | 1558 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1559 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1560 | |
915bf0f6 | 1561 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1562 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1563 | rules->strbuf->in_count, rules->strbuf->in_len, |
1564 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1565 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1566 | |
1567 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1568 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1569 | rules->uids_cur = 0; |
1570 | rules->uids_max = 0; | |
a1e58e8e | 1571 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1572 | rules->gids_cur = 0; |
1573 | rules->gids_max = 0; | |
1574 | ||
1575 | dump_rules(rules); | |
1576 | return rules; | |
c7521974 KS |
1577 | } |
1578 | ||
9ec6e95b | 1579 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1580 | if (rules == NULL) |
1581 | return NULL; | |
1582 | free(rules->tokens); | |
915bf0f6 | 1583 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1584 | free(rules->uids); |
1585 | free(rules->gids); | |
6b430fdb | 1586 | return mfree(rules); |
c7521974 | 1587 | } |
6880b25d | 1588 | |
9ec6e95b | 1589 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1590 | if (!rules) |
1591 | return false; | |
1592 | ||
2ad8416d | 1593 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1594 | } |
1595 | ||
9ec6e95b | 1596 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1597 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1598 | char *pos; |
1599 | bool match = false; | |
1600 | ||
1601 | if (val == NULL) | |
1602 | val = ""; | |
1603 | ||
1604 | switch (token->key.glob) { | |
1605 | case GL_PLAIN: | |
33502ffe | 1606 | match = (streq(key_value, val)); |
912541b0 KS |
1607 | break; |
1608 | case GL_GLOB: | |
1609 | match = (fnmatch(key_value, val, 0) == 0); | |
1610 | break; | |
1611 | case GL_SPLIT: | |
1612 | { | |
33502ffe | 1613 | const char *s; |
912541b0 KS |
1614 | size_t len; |
1615 | ||
915bf0f6 | 1616 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1617 | len = strlen(val); |
1618 | for (;;) { | |
1619 | const char *next; | |
1620 | ||
33502ffe | 1621 | next = strchr(s, '|'); |
912541b0 | 1622 | if (next != NULL) { |
33502ffe | 1623 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1624 | |
641906e9 | 1625 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1626 | if (match) |
1627 | break; | |
1628 | } else { | |
33502ffe | 1629 | match = (streq(s, val)); |
912541b0 KS |
1630 | break; |
1631 | } | |
33502ffe | 1632 | s = &next[1]; |
912541b0 KS |
1633 | } |
1634 | break; | |
1635 | } | |
1636 | case GL_SPLIT_GLOB: | |
1637 | { | |
1638 | char value[UTIL_PATH_SIZE]; | |
1639 | ||
d5a89d7d | 1640 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1641 | key_value = value; |
1642 | while (key_value != NULL) { | |
1643 | pos = strchr(key_value, '|'); | |
1644 | if (pos != NULL) { | |
1645 | pos[0] = '\0'; | |
1646 | pos = &pos[1]; | |
1647 | } | |
912541b0 KS |
1648 | match = (fnmatch(key_value, val, 0) == 0); |
1649 | if (match) | |
1650 | break; | |
1651 | key_value = pos; | |
1652 | } | |
1653 | break; | |
1654 | } | |
1655 | case GL_SOMETHING: | |
1656 | match = (val[0] != '\0'); | |
1657 | break; | |
1658 | case GL_UNSET: | |
1659 | return -1; | |
1660 | } | |
1661 | ||
baa30fbc | 1662 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1663 | return 0; |
baa30fbc | 1664 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1665 | return 0; |
912541b0 | 1666 | return -1; |
6880b25d KS |
1667 | } |
1668 | ||
9ec6e95b | 1669 | static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { |
912541b0 KS |
1670 | const char *name; |
1671 | char nbuf[UTIL_NAME_SIZE]; | |
1672 | const char *value; | |
1673 | char vbuf[UTIL_NAME_SIZE]; | |
1674 | size_t len; | |
1675 | ||
915bf0f6 | 1676 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1677 | switch (cur->key.attrsubst) { |
1678 | case SB_FORMAT: | |
1679 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); | |
1680 | name = nbuf; | |
1681 | /* fall through */ | |
1682 | case SB_NONE: | |
1683 | value = udev_device_get_sysattr_value(dev, name); | |
1684 | if (value == NULL) | |
1685 | return -1; | |
1686 | break; | |
1687 | case SB_SUBSYS: | |
1688 | if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) | |
1689 | return -1; | |
1690 | value = vbuf; | |
1691 | break; | |
1692 | default: | |
1693 | return -1; | |
1694 | } | |
1695 | ||
1696 | /* remove trailing whitespace, if not asked to match for it */ | |
1697 | len = strlen(value); | |
1698 | if (len > 0 && isspace(value[len-1])) { | |
1699 | const char *key_value; | |
1700 | size_t klen; | |
1701 | ||
915bf0f6 | 1702 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1703 | klen = strlen(key_value); |
1704 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1705 | if (value != vbuf) { | |
d5a89d7d | 1706 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1707 | value = vbuf; |
1708 | } | |
1709 | while (len > 0 && isspace(vbuf[--len])) | |
1710 | vbuf[len] = '\0'; | |
912541b0 KS |
1711 | } |
1712 | } | |
1713 | ||
1714 | return match_key(rules, cur, value); | |
6880b25d KS |
1715 | } |
1716 | ||
1717 | enum escape_type { | |
912541b0 KS |
1718 | ESCAPE_UNSET, |
1719 | ESCAPE_NONE, | |
1720 | ESCAPE_REPLACE, | |
6880b25d KS |
1721 | }; |
1722 | ||
4fd6af76 ZJS |
1723 | void udev_rules_apply_to_event(struct udev_rules *rules, |
1724 | struct udev_event *event, | |
1725 | usec_t timeout_usec, | |
1726 | usec_t timeout_warn_usec, | |
1727 | struct udev_list *properties_list) { | |
912541b0 KS |
1728 | struct token *cur; |
1729 | struct token *rule; | |
1730 | enum escape_type esc = ESCAPE_UNSET; | |
1731 | bool can_set_name; | |
1732 | ||
1733 | if (rules->tokens == NULL) | |
4fd6af76 | 1734 | return; |
912541b0 | 1735 | |
33502ffe | 1736 | can_set_name = ((!streq(udev_device_get_action(event->dev), "remove")) && |
912541b0 KS |
1737 | (major(udev_device_get_devnum(event->dev)) > 0 || |
1738 | udev_device_get_ifindex(event->dev) > 0)); | |
1739 | ||
1740 | /* loop through token list, match, run actions or forward to next rule */ | |
1741 | cur = &rules->tokens[0]; | |
1742 | rule = cur; | |
1743 | for (;;) { | |
1744 | dump_token(rules, cur); | |
1745 | switch (cur->type) { | |
1746 | case TK_RULE: | |
1747 | /* current rule */ | |
1748 | rule = cur; | |
1749 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1750 | if (!can_set_name && rule->rule.can_set_name) | |
1751 | goto nomatch; | |
1752 | esc = ESCAPE_UNSET; | |
1753 | break; | |
1754 | case TK_M_ACTION: | |
1755 | if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0) | |
1756 | goto nomatch; | |
1757 | break; | |
1758 | case TK_M_DEVPATH: | |
1759 | if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0) | |
1760 | goto nomatch; | |
1761 | break; | |
1762 | case TK_M_KERNEL: | |
1763 | if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0) | |
1764 | goto nomatch; | |
1765 | break; | |
1766 | case TK_M_DEVLINK: { | |
912541b0 KS |
1767 | struct udev_list_entry *list_entry; |
1768 | bool match = false; | |
1769 | ||
1770 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { | |
1771 | const char *devlink; | |
1772 | ||
920b52e4 | 1773 | devlink = udev_list_entry_get_name(list_entry) + strlen("/dev/"); |
912541b0 KS |
1774 | if (match_key(rules, cur, devlink) == 0) { |
1775 | match = true; | |
1776 | break; | |
1777 | } | |
1778 | } | |
1779 | if (!match) | |
1780 | goto nomatch; | |
1781 | break; | |
1782 | } | |
1783 | case TK_M_NAME: | |
1784 | if (match_key(rules, cur, event->name) != 0) | |
1785 | goto nomatch; | |
1786 | break; | |
1787 | case TK_M_ENV: { | |
915bf0f6 | 1788 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1789 | const char *value; |
1790 | ||
1791 | value = udev_device_get_property_value(event->dev, key_name); | |
adeba500 KS |
1792 | |
1793 | /* check global properties */ | |
1794 | if (!value && properties_list) { | |
1795 | struct udev_list_entry *list_entry; | |
1796 | ||
1797 | list_entry = udev_list_get_entry(properties_list); | |
1798 | list_entry = udev_list_entry_get_by_name(list_entry, key_name); | |
1799 | if (list_entry != NULL) | |
1800 | value = udev_list_entry_get_value(list_entry); | |
1801 | } | |
1802 | ||
1803 | if (!value) | |
912541b0 | 1804 | value = ""; |
912541b0 KS |
1805 | if (match_key(rules, cur, value)) |
1806 | goto nomatch; | |
1807 | break; | |
1808 | } | |
1809 | case TK_M_TAG: { | |
1810 | struct udev_list_entry *list_entry; | |
1811 | bool match = false; | |
1812 | ||
1813 | udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { | |
915bf0f6 | 1814 | if (streq(rules_str(rules, cur->key.value_off), udev_list_entry_get_name(list_entry))) { |
912541b0 KS |
1815 | match = true; |
1816 | break; | |
1817 | } | |
1818 | } | |
4302857b FF |
1819 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1820 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1821 | goto nomatch; |
1822 | break; | |
1823 | } | |
1824 | case TK_M_SUBSYSTEM: | |
1825 | if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) | |
1826 | goto nomatch; | |
1827 | break; | |
1828 | case TK_M_DRIVER: | |
1829 | if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0) | |
1830 | goto nomatch; | |
1831 | break; | |
912541b0 KS |
1832 | case TK_M_ATTR: |
1833 | if (match_attr(rules, event->dev, event, cur) != 0) | |
1834 | goto nomatch; | |
1835 | break; | |
f4cf2e5b KS |
1836 | case TK_M_SYSCTL: { |
1837 | char filename[UTIL_PATH_SIZE]; | |
1838 | _cleanup_free_ char *value = NULL; | |
1839 | size_t len; | |
1840 | ||
1841 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
1842 | sysctl_normalize(filename); | |
1843 | if (sysctl_read(filename, &value) < 0) | |
1844 | goto nomatch; | |
1845 | ||
1846 | len = strlen(value); | |
1847 | while (len > 0 && isspace(value[--len])) | |
1848 | value[len] = '\0'; | |
1849 | if (match_key(rules, cur, value) != 0) | |
1850 | goto nomatch; | |
1851 | break; | |
1852 | } | |
912541b0 KS |
1853 | case TK_M_KERNELS: |
1854 | case TK_M_SUBSYSTEMS: | |
1855 | case TK_M_DRIVERS: | |
1856 | case TK_M_ATTRS: | |
1857 | case TK_M_TAGS: { | |
1858 | struct token *next; | |
1859 | ||
1860 | /* get whole sequence of parent matches */ | |
1861 | next = cur; | |
1862 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1863 | next++; | |
1864 | ||
1865 | /* loop over parents */ | |
1866 | event->dev_parent = event->dev; | |
1867 | for (;;) { | |
1868 | struct token *key; | |
1869 | ||
912541b0 KS |
1870 | /* loop over sequence of parent match keys */ |
1871 | for (key = cur; key < next; key++ ) { | |
1872 | dump_token(rules, key); | |
1873 | switch(key->type) { | |
1874 | case TK_M_KERNELS: | |
1875 | if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0) | |
1876 | goto try_parent; | |
1877 | break; | |
1878 | case TK_M_SUBSYSTEMS: | |
1879 | if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0) | |
1880 | goto try_parent; | |
1881 | break; | |
1882 | case TK_M_DRIVERS: | |
1883 | if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0) | |
1884 | goto try_parent; | |
1885 | break; | |
1886 | case TK_M_ATTRS: | |
1887 | if (match_attr(rules, event->dev_parent, event, key) != 0) | |
1888 | goto try_parent; | |
1889 | break; | |
1890 | case TK_M_TAGS: { | |
915bf0f6 | 1891 | bool match = udev_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1892 | |
1893 | if (match && key->key.op == OP_NOMATCH) | |
1894 | goto try_parent; | |
1895 | if (!match && key->key.op == OP_MATCH) | |
1896 | goto try_parent; | |
1897 | break; | |
1898 | } | |
1899 | default: | |
1900 | goto nomatch; | |
1901 | } | |
912541b0 | 1902 | } |
912541b0 KS |
1903 | break; |
1904 | ||
1905 | try_parent: | |
1906 | event->dev_parent = udev_device_get_parent(event->dev_parent); | |
1907 | if (event->dev_parent == NULL) | |
1908 | goto nomatch; | |
1909 | } | |
1910 | /* move behind our sequence of parent match keys */ | |
1911 | cur = next; | |
1912 | continue; | |
1913 | } | |
1914 | case TK_M_TEST: { | |
1915 | char filename[UTIL_PATH_SIZE]; | |
1916 | struct stat statbuf; | |
1917 | int match; | |
1918 | ||
915bf0f6 | 1919 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename)); |
912541b0 KS |
1920 | if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { |
1921 | if (filename[0] != '/') { | |
1922 | char tmp[UTIL_PATH_SIZE]; | |
1923 | ||
d5a89d7d KS |
1924 | strscpy(tmp, sizeof(tmp), filename); |
1925 | strscpyl(filename, sizeof(filename), | |
912541b0 KS |
1926 | udev_device_get_syspath(event->dev), "/", tmp, NULL); |
1927 | } | |
1928 | } | |
1929 | attr_subst_subdir(filename, sizeof(filename)); | |
1930 | ||
1931 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 1932 | if (match && cur->key.mode > 0) |
912541b0 | 1933 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
1934 | if (match && cur->key.op == OP_NOMATCH) |
1935 | goto nomatch; | |
1936 | if (!match && cur->key.op == OP_MATCH) | |
1937 | goto nomatch; | |
1938 | break; | |
1939 | } | |
912541b0 KS |
1940 | case TK_M_PROGRAM: { |
1941 | char program[UTIL_PATH_SIZE]; | |
209b031e | 1942 | char result[UTIL_LINE_SIZE]; |
912541b0 | 1943 | |
a1e58e8e | 1944 | event->program_result = mfree(event->program_result); |
915bf0f6 | 1945 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program)); |
9f6445e3 | 1946 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 1947 | program, |
915bf0f6 | 1948 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 1949 | rule->rule.filename_line); |
912541b0 | 1950 | |
bbf35206 | 1951 | if (udev_event_spawn(event, timeout_usec, timeout_warn_usec, true, program, result, sizeof(result)) < 0) { |
912541b0 KS |
1952 | if (cur->key.op != OP_NOMATCH) |
1953 | goto nomatch; | |
1954 | } else { | |
1955 | int count; | |
1956 | ||
1957 | util_remove_trailing_chars(result, '\n'); | |
1958 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
1959 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); | |
1960 | if (count > 0) | |
9f6445e3 | 1961 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
1962 | } |
1963 | event->program_result = strdup(result); | |
912541b0 KS |
1964 | if (cur->key.op == OP_NOMATCH) |
1965 | goto nomatch; | |
1966 | } | |
1967 | break; | |
1968 | } | |
1969 | case TK_M_IMPORT_FILE: { | |
1970 | char import[UTIL_PATH_SIZE]; | |
1971 | ||
915bf0f6 | 1972 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
1973 | if (import_file_into_properties(event->dev, import) != 0) |
1974 | if (cur->key.op != OP_NOMATCH) | |
1975 | goto nomatch; | |
1976 | break; | |
1977 | } | |
1978 | case TK_M_IMPORT_PROG: { | |
1979 | char import[UTIL_PATH_SIZE]; | |
1980 | ||
915bf0f6 | 1981 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
9f6445e3 | 1982 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 1983 | import, |
915bf0f6 | 1984 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 1985 | rule->rule.filename_line); |
912541b0 | 1986 | |
8314de1d | 1987 | if (import_program_into_properties(event, timeout_usec, timeout_warn_usec, import) != 0) |
912541b0 KS |
1988 | if (cur->key.op != OP_NOMATCH) |
1989 | goto nomatch; | |
1990 | break; | |
1991 | } | |
1992 | case TK_M_IMPORT_BUILTIN: { | |
1993 | char command[UTIL_PATH_SIZE]; | |
1994 | ||
1995 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
1996 | /* check if we ran already */ | |
1997 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 1998 | log_debug("IMPORT builtin skip '%s' %s:%u", |
baa30fbc | 1999 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2000 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2001 | rule->rule.filename_line); |
912541b0 KS |
2002 | /* return the result from earlier run */ |
2003 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2004 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2005 | goto nomatch; |
2006 | break; | |
2007 | } | |
2008 | /* mark as ran */ | |
2009 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2010 | } | |
2011 | ||
915bf0f6 | 2012 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command)); |
9f6445e3 | 2013 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2014 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2015 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2016 | rule->rule.filename_line); |
912541b0 KS |
2017 | |
2018 | if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) { | |
2019 | /* remember failure */ | |
9f6445e3 | 2020 | log_debug("IMPORT builtin '%s' returned non-zero", |
baa30fbc | 2021 | udev_builtin_name(cur->key.builtin_cmd)); |
912541b0 KS |
2022 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2023 | if (cur->key.op != OP_NOMATCH) | |
2024 | goto nomatch; | |
2025 | } | |
2026 | break; | |
2027 | } | |
2028 | case TK_M_IMPORT_DB: { | |
915bf0f6 | 2029 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2030 | const char *value; |
2031 | ||
2032 | value = udev_device_get_property_value(event->dev_db, key); | |
df546eb5 TG |
2033 | if (value != NULL) |
2034 | udev_device_add_property(event->dev, key, value); | |
2035 | else { | |
912541b0 KS |
2036 | if (cur->key.op != OP_NOMATCH) |
2037 | goto nomatch; | |
2038 | } | |
2039 | break; | |
2040 | } | |
2041 | case TK_M_IMPORT_CMDLINE: { | |
fdd21be6 | 2042 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 KS |
2043 | bool imported = false; |
2044 | ||
47ef94ac | 2045 | f = fopen("/proc/cmdline", "re"); |
912541b0 KS |
2046 | if (f != NULL) { |
2047 | char cmdline[4096]; | |
2048 | ||
2049 | if (fgets(cmdline, sizeof(cmdline), f) != NULL) { | |
915bf0f6 | 2050 | const char *key = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2051 | char *pos; |
2052 | ||
2053 | pos = strstr(cmdline, key); | |
2054 | if (pos != NULL) { | |
fdd21be6 | 2055 | imported = true; |
912541b0 | 2056 | pos += strlen(key); |
fdd21be6 | 2057 | if (pos[0] == '\0' || isspace(pos[0])) |
912541b0 | 2058 | /* we import simple flags as 'FLAG=1' */ |
df546eb5 | 2059 | udev_device_add_property(event->dev, key, "1"); |
fdd21be6 | 2060 | else if (pos[0] == '=') { |
912541b0 KS |
2061 | const char *value; |
2062 | ||
2063 | pos++; | |
2064 | value = pos; | |
2065 | while (pos[0] != '\0' && !isspace(pos[0])) | |
2066 | pos++; | |
2067 | pos[0] = '\0'; | |
df546eb5 | 2068 | udev_device_add_property(event->dev, key, value); |
912541b0 KS |
2069 | } |
2070 | } | |
2071 | } | |
912541b0 KS |
2072 | } |
2073 | if (!imported && cur->key.op != OP_NOMATCH) | |
2074 | goto nomatch; | |
2075 | break; | |
2076 | } | |
2077 | case TK_M_IMPORT_PARENT: { | |
2078 | char import[UTIL_PATH_SIZE]; | |
2079 | ||
915bf0f6 | 2080 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import)); |
912541b0 KS |
2081 | if (import_parent_into_properties(event->dev, import) != 0) |
2082 | if (cur->key.op != OP_NOMATCH) | |
2083 | goto nomatch; | |
2084 | break; | |
2085 | } | |
2086 | case TK_M_RESULT: | |
2087 | if (match_key(rules, cur, event->program_result) != 0) | |
2088 | goto nomatch; | |
2089 | break; | |
2090 | case TK_A_STRING_ESCAPE_NONE: | |
2091 | esc = ESCAPE_NONE; | |
2092 | break; | |
2093 | case TK_A_STRING_ESCAPE_REPLACE: | |
2094 | esc = ESCAPE_REPLACE; | |
2095 | break; | |
2096 | case TK_A_DB_PERSIST: | |
2097 | udev_device_set_db_persist(event->dev); | |
2098 | break; | |
2099 | case TK_A_INOTIFY_WATCH: | |
2100 | if (event->inotify_watch_final) | |
2101 | break; | |
2102 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2103 | event->inotify_watch_final = true; | |
2104 | event->inotify_watch = cur->key.watch; | |
2105 | break; | |
2106 | case TK_A_DEVLINK_PRIO: | |
2107 | udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); | |
2108 | break; | |
2109 | case TK_A_OWNER: { | |
2110 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2111 | const char *ow = owner; |
2112 | int r; | |
912541b0 KS |
2113 | |
2114 | if (event->owner_final) | |
2115 | break; | |
2116 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2117 | event->owner_final = true; | |
915bf0f6 | 2118 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner)); |
1edefa4f | 2119 | event->owner_set = true; |
23bf8dd7 TG |
2120 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL); |
2121 | if (r < 0) { | |
2122 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2123 | log_error("specified user '%s' unknown", owner); |
23bf8dd7 | 2124 | else |
279d3c9c | 2125 | log_error_errno(r, "error resolving user '%s': %m", owner); |
23bf8dd7 TG |
2126 | |
2127 | event->uid = 0; | |
2128 | } | |
9f6445e3 | 2129 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2130 | event->uid, |
915bf0f6 | 2131 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2132 | rule->rule.filename_line); |
912541b0 KS |
2133 | break; |
2134 | } | |
2135 | case TK_A_GROUP: { | |
2136 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 TG |
2137 | const char *gr = group; |
2138 | int r; | |
912541b0 KS |
2139 | |
2140 | if (event->group_final) | |
2141 | break; | |
2142 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2143 | event->group_final = true; | |
915bf0f6 | 2144 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group)); |
1edefa4f | 2145 | event->group_set = true; |
23bf8dd7 TG |
2146 | r = get_group_creds(&gr, &event->gid); |
2147 | if (r < 0) { | |
2148 | if (r == -ENOENT || r == -ESRCH) | |
ff49bc32 | 2149 | log_error("specified group '%s' unknown", group); |
23bf8dd7 | 2150 | else |
279d3c9c | 2151 | log_error_errno(r, "error resolving group '%s': %m", group); |
23bf8dd7 TG |
2152 | |
2153 | event->gid = 0; | |
2154 | } | |
9f6445e3 | 2155 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2156 | event->gid, |
915bf0f6 | 2157 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2158 | rule->rule.filename_line); |
912541b0 KS |
2159 | break; |
2160 | } | |
2161 | case TK_A_MODE: { | |
2162 | char mode_str[UTIL_NAME_SIZE]; | |
2163 | mode_t mode; | |
2164 | char *endptr; | |
2165 | ||
2166 | if (event->mode_final) | |
2167 | break; | |
915bf0f6 | 2168 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str)); |
912541b0 KS |
2169 | mode = strtol(mode_str, &endptr, 8); |
2170 | if (endptr[0] != '\0') { | |
9f6445e3 | 2171 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2172 | break; |
2173 | } | |
2174 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2175 | event->mode_final = true; | |
2176 | event->mode_set = true; | |
2177 | event->mode = mode; | |
9f6445e3 | 2178 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2179 | event->mode, |
915bf0f6 | 2180 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2181 | rule->rule.filename_line); |
912541b0 KS |
2182 | break; |
2183 | } | |
2184 | case TK_A_OWNER_ID: | |
2185 | if (event->owner_final) | |
2186 | break; | |
2187 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2188 | event->owner_final = true; | |
1edefa4f | 2189 | event->owner_set = true; |
912541b0 | 2190 | event->uid = cur->key.uid; |
9f6445e3 | 2191 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2192 | event->uid, |
915bf0f6 | 2193 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2194 | rule->rule.filename_line); |
912541b0 KS |
2195 | break; |
2196 | case TK_A_GROUP_ID: | |
2197 | if (event->group_final) | |
2198 | break; | |
2199 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2200 | event->group_final = true; | |
1edefa4f | 2201 | event->group_set = true; |
912541b0 | 2202 | event->gid = cur->key.gid; |
9f6445e3 | 2203 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2204 | event->gid, |
915bf0f6 | 2205 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2206 | rule->rule.filename_line); |
912541b0 KS |
2207 | break; |
2208 | case TK_A_MODE_ID: | |
2209 | if (event->mode_final) | |
2210 | break; | |
2211 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2212 | event->mode_final = true; | |
2213 | event->mode_set = true; | |
2214 | event->mode = cur->key.mode; | |
9f6445e3 | 2215 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2216 | event->mode, |
915bf0f6 | 2217 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2218 | rule->rule.filename_line); |
912541b0 | 2219 | break; |
c26547d6 KS |
2220 | case TK_A_SECLABEL: { |
2221 | const char *name, *label; | |
2222 | ||
2223 | name = rules_str(rules, cur->key.attr_off); | |
2224 | label = rules_str(rules, cur->key.value_off); | |
2225 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2226 | udev_list_cleanup(&event->seclabel_list); | |
2227 | udev_list_entry_add(&event->seclabel_list, name, label); | |
9f6445e3 | 2228 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2229 | name, label, |
2230 | rules_str(rules, rule->rule.filename_off), | |
2231 | rule->rule.filename_line); | |
2232 | break; | |
2233 | } | |
912541b0 | 2234 | case TK_A_ENV: { |
915bf0f6 KS |
2235 | const char *name = rules_str(rules, cur->key.attr_off); |
2236 | char *value = rules_str(rules, cur->key.value_off); | |
07845c14 KS |
2237 | char value_new[UTIL_NAME_SIZE]; |
2238 | const char *value_old = NULL; | |
912541b0 | 2239 | |
07845c14 KS |
2240 | if (value[0] == '\0') { |
2241 | if (cur->key.op == OP_ADD) | |
2242 | break; | |
912541b0 | 2243 | udev_device_add_property(event->dev, name, NULL); |
07845c14 | 2244 | break; |
912541b0 | 2245 | } |
07845c14 KS |
2246 | |
2247 | if (cur->key.op == OP_ADD) | |
2248 | value_old = udev_device_get_property_value(event->dev, name); | |
2249 | if (value_old) { | |
2250 | char temp[UTIL_NAME_SIZE]; | |
2251 | ||
2252 | /* append value separated by space */ | |
2253 | udev_event_apply_format(event, value, temp, sizeof(temp)); | |
d5a89d7d | 2254 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 KS |
2255 | } else |
2256 | udev_event_apply_format(event, value, value_new, sizeof(value_new)); | |
2257 | ||
df546eb5 | 2258 | udev_device_add_property(event->dev, name, value_new); |
912541b0 KS |
2259 | break; |
2260 | } | |
2261 | case TK_A_TAG: { | |
2262 | char tag[UTIL_PATH_SIZE]; | |
2263 | const char *p; | |
2264 | ||
915bf0f6 | 2265 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag)); |
912541b0 KS |
2266 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2267 | udev_device_cleanup_tags_list(event->dev); | |
2268 | for (p = tag; *p != '\0'; p++) { | |
2269 | if ((*p >= 'a' && *p <= 'z') || | |
2270 | (*p >= 'A' && *p <= 'Z') || | |
2271 | (*p >= '0' && *p <= '9') || | |
2272 | *p == '-' || *p == '_') | |
2273 | continue; | |
9f6445e3 | 2274 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2275 | break; |
2276 | } | |
8e3ba377 DH |
2277 | if (cur->key.op == OP_REMOVE) |
2278 | udev_device_remove_tag(event->dev, tag); | |
2279 | else | |
2280 | udev_device_add_tag(event->dev, tag); | |
912541b0 KS |
2281 | break; |
2282 | } | |
2283 | case TK_A_NAME: { | |
915bf0f6 | 2284 | const char *name = rules_str(rules, cur->key.value_off); |
0ecfcbd4 | 2285 | |
912541b0 KS |
2286 | char name_str[UTIL_PATH_SIZE]; |
2287 | int count; | |
2288 | ||
2289 | if (event->name_final) | |
2290 | break; | |
2291 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2292 | event->name_final = true; | |
2293 | udev_event_apply_format(event, name, name_str, sizeof(name_str)); | |
2294 | if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { | |
2295 | count = util_replace_chars(name_str, "/"); | |
2296 | if (count > 0) | |
9f6445e3 | 2297 | log_debug("%i character(s) replaced", count); |
912541b0 | 2298 | } |
6ada823a | 2299 | if (major(udev_device_get_devnum(event->dev)) && |
99f16bb8 ZJS |
2300 | !streq(name_str, udev_device_get_devnode(event->dev) + strlen("/dev/"))) { |
2301 | log_error("NAME=\"%s\" ignored, kernel device nodes cannot be renamed; please fix it in %s:%u\n", | |
2302 | name, | |
2303 | rules_str(rules, rule->rule.filename_off), | |
2304 | rule->rule.filename_line); | |
6ada823a | 2305 | break; |
0ecfcbd4 | 2306 | } |
4fd6af76 ZJS |
2307 | if (free_and_strdup(&event->name, name_str) < 0) { |
2308 | log_oom(); | |
2309 | return; | |
2310 | } | |
9f6445e3 | 2311 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2312 | event->name, |
915bf0f6 | 2313 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2314 | rule->rule.filename_line); |
912541b0 KS |
2315 | break; |
2316 | } | |
2317 | case TK_A_DEVLINK: { | |
2318 | char temp[UTIL_PATH_SIZE]; | |
2319 | char filename[UTIL_PATH_SIZE]; | |
2320 | char *pos, *next; | |
2321 | int count = 0; | |
2322 | ||
2323 | if (event->devlink_final) | |
2324 | break; | |
2325 | if (major(udev_device_get_devnum(event->dev)) == 0) | |
2326 | break; | |
2327 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2328 | event->devlink_final = true; | |
2329 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) | |
2330 | udev_device_cleanup_devlinks_list(event->dev); | |
2331 | ||
2332 | /* allow multiple symlinks separated by spaces */ | |
915bf0f6 | 2333 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp)); |
912541b0 KS |
2334 | if (esc == ESCAPE_UNSET) |
2335 | count = util_replace_chars(temp, "/ "); | |
2336 | else if (esc == ESCAPE_REPLACE) | |
2337 | count = util_replace_chars(temp, "/"); | |
2338 | if (count > 0) | |
9f6445e3 | 2339 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2340 | pos = temp; |
2341 | while (isspace(pos[0])) | |
2342 | pos++; | |
2343 | next = strchr(pos, ' '); | |
2344 | while (next != NULL) { | |
2345 | next[0] = '\0'; | |
9f6445e3 | 2346 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2347 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2348 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2349 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2350 | while (isspace(next[1])) |
2351 | next++; | |
2352 | pos = &next[1]; | |
2353 | next = strchr(pos, ' '); | |
2354 | } | |
2355 | if (pos[0] != '\0') { | |
9f6445e3 | 2356 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2357 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2358 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
8a173387 | 2359 | udev_device_add_devlink(event->dev, filename); |
912541b0 KS |
2360 | } |
2361 | break; | |
2362 | } | |
2363 | case TK_A_ATTR: { | |
915bf0f6 | 2364 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
2365 | char attr[UTIL_PATH_SIZE]; |
2366 | char value[UTIL_NAME_SIZE]; | |
fdd21be6 | 2367 | _cleanup_fclose_ FILE *f = NULL; |
912541b0 KS |
2368 | |
2369 | if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) | |
d5a89d7d | 2370 | strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); |
912541b0 KS |
2371 | attr_subst_subdir(attr, sizeof(attr)); |
2372 | ||
915bf0f6 | 2373 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); |
9f6445e3 | 2374 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2375 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2376 | rule->rule.filename_line); |
47ef94ac | 2377 | f = fopen(attr, "we"); |
fdd21be6 | 2378 | if (f == NULL) |
56f64d95 | 2379 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
fdd21be6 ZJS |
2380 | else if (fprintf(f, "%s", value) <= 0) |
2381 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); | |
912541b0 KS |
2382 | break; |
2383 | } | |
f4cf2e5b KS |
2384 | case TK_A_SYSCTL: { |
2385 | char filename[UTIL_PATH_SIZE]; | |
2386 | char value[UTIL_NAME_SIZE]; | |
2387 | int r; | |
2388 | ||
2389 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename)); | |
2390 | sysctl_normalize(filename); | |
2391 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value)); | |
2392 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, | |
2393 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2394 | r = sysctl_write(filename, value); | |
2395 | if (r < 0) | |
46b57b6e | 2396 | log_error_errno(r, "error writing SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2397 | break; |
2398 | } | |
83cd6b75 KS |
2399 | case TK_A_RUN_BUILTIN: |
2400 | case TK_A_RUN_PROGRAM: { | |
2401 | struct udev_list_entry *entry; | |
2402 | ||
912541b0 KS |
2403 | if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) |
2404 | udev_list_cleanup(&event->run_list); | |
9f6445e3 | 2405 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2406 | rules_str(rules, cur->key.value_off), |
2407 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2408 | rule->rule.filename_line); |
915bf0f6 | 2409 | entry = udev_list_entry_add(&event->run_list, rules_str(rules, cur->key.value_off), NULL); |
83cd6b75 | 2410 | udev_list_entry_set_num(entry, cur->key.builtin_cmd); |
912541b0 KS |
2411 | break; |
2412 | } | |
2413 | case TK_A_GOTO: | |
2414 | if (cur->key.rule_goto == 0) | |
2415 | break; | |
2416 | cur = &rules->tokens[cur->key.rule_goto]; | |
2417 | continue; | |
2418 | case TK_END: | |
4fd6af76 | 2419 | return; |
912541b0 KS |
2420 | |
2421 | case TK_M_PARENTS_MIN: | |
2422 | case TK_M_PARENTS_MAX: | |
2423 | case TK_M_MAX: | |
2424 | case TK_UNSET: | |
9f6445e3 | 2425 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2426 | goto nomatch; |
2427 | } | |
2428 | ||
2429 | cur++; | |
2430 | continue; | |
2431 | nomatch: | |
2432 | /* fast-forward to next rule */ | |
2433 | cur = rule + rule->rule.token_count; | |
912541b0 | 2434 | } |
6880b25d | 2435 | } |
761dfddc | 2436 | |
9ec6e95b | 2437 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2438 | struct token *cur; |
2439 | struct token *rule; | |
2440 | uid_t uid = 0; | |
2441 | gid_t gid = 0; | |
2442 | mode_t mode = 0; | |
84b6ad70 TG |
2443 | _cleanup_strv_free_ char **tags = NULL; |
2444 | char **t; | |
2445 | FILE *f = NULL; | |
2446 | _cleanup_free_ char *path = NULL; | |
fdd21be6 | 2447 | int r; |
912541b0 KS |
2448 | |
2449 | if (rules->tokens == NULL) | |
84b6ad70 | 2450 | return 0; |
912541b0 KS |
2451 | |
2452 | cur = &rules->tokens[0]; | |
2453 | rule = cur; | |
2454 | for (;;) { | |
2455 | switch (cur->type) { | |
2456 | case TK_RULE: | |
2457 | /* current rule */ | |
2458 | rule = cur; | |
2459 | ||
2460 | /* skip rules without a static_node tag */ | |
2461 | if (!rule->rule.has_static_node) | |
2462 | goto next; | |
2463 | ||
2464 | uid = 0; | |
2465 | gid = 0; | |
2466 | mode = 0; | |
97b11eed | 2467 | tags = strv_free(tags); |
912541b0 KS |
2468 | break; |
2469 | case TK_A_OWNER_ID: | |
2470 | uid = cur->key.uid; | |
2471 | break; | |
2472 | case TK_A_GROUP_ID: | |
2473 | gid = cur->key.gid; | |
2474 | break; | |
2475 | case TK_A_MODE_ID: | |
2476 | mode = cur->key.mode; | |
84b6ad70 TG |
2477 | break; |
2478 | case TK_A_TAG: | |
2479 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2480 | if (r < 0) | |
2481 | goto finish; | |
2482 | ||
912541b0 KS |
2483 | break; |
2484 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2485 | char device_node[UTIL_PATH_SIZE]; |
2486 | char tags_dir[UTIL_PATH_SIZE]; | |
2487 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2488 | struct stat stats; |
2489 | ||
2490 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2491 | |
84b6ad70 | 2492 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2493 | goto next; |
d6f116a7 | 2494 | |
84b6ad70 | 2495 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2496 | if (stat(device_node, &stats) != 0) |
2497 | break; | |
2498 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2499 | break; | |
84b6ad70 | 2500 | |
d6f116a7 | 2501 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2502 | if (tags) { |
84b6ad70 TG |
2503 | STRV_FOREACH(t, tags) { |
2504 | _cleanup_free_ char *unescaped_filename = NULL; | |
2505 | ||
2506 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2507 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2508 | if (r < 0) |
2509 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2510 | |
2511 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2512 | ||
2513 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2514 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2515 | if (r < 0 && errno != EEXIST) |
2516 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2517 | tag_symlink, device_node); | |
84b6ad70 TG |
2518 | } |
2519 | } | |
2520 | ||
15a72200 TG |
2521 | /* don't touch the permissions if only the tags were set */ |
2522 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2523 | break; |
2524 | ||
912541b0 KS |
2525 | if (mode == 0) { |
2526 | if (gid > 0) | |
2527 | mode = 0660; | |
2528 | else | |
2529 | mode = 0600; | |
2530 | } | |
2531 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 TG |
2532 | r = chmod(device_node, mode); |
2533 | if (r < 0) { | |
9f6445e3 | 2534 | log_error("failed to chmod '%s' %#o", device_node, mode); |
490f0087 TG |
2535 | return -errno; |
2536 | } else | |
9f6445e3 | 2537 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2538 | } |
2539 | ||
2540 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 TG |
2541 | r = chown(device_node, uid, gid); |
2542 | if (r < 0) { | |
9f6445e3 | 2543 | log_error("failed to chown '%s' %u %u ", device_node, uid, gid); |
490f0087 TG |
2544 | return -errno; |
2545 | } else | |
9f6445e3 | 2546 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2547 | } |
2548 | ||
84b6ad70 | 2549 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2550 | break; |
2551 | } | |
2552 | case TK_END: | |
84b6ad70 | 2553 | goto finish; |
912541b0 KS |
2554 | } |
2555 | ||
2556 | cur++; | |
2557 | continue; | |
761dfddc | 2558 | next: |
912541b0 KS |
2559 | /* fast-forward to next rule */ |
2560 | cur = rule + rule->rule.token_count; | |
2561 | continue; | |
2562 | } | |
84b6ad70 TG |
2563 | |
2564 | finish: | |
2565 | if (f) { | |
2566 | fflush(f); | |
2567 | fchmod(fileno(f), 0644); | |
2568 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
fdd21be6 ZJS |
2569 | unlink_noerrno("/run/udev/static_node-tags"); |
2570 | unlink_noerrno(path); | |
2571 | return -errno; | |
84b6ad70 | 2572 | } |
84b6ad70 TG |
2573 | } |
2574 | ||
fdd21be6 | 2575 | return 0; |
761dfddc | 2576 | } |