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e7145211 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
2232cac8 | 2 | |
2232cac8 | 3 | #include <ctype.h> |
4f5dd394 LP |
4 | #include <errno.h> |
5 | #include <fcntl.h> | |
cea61f5c | 6 | #include <fnmatch.h> |
4f5dd394 LP |
7 | #include <limits.h> |
8 | #include <stdbool.h> | |
9 | #include <stddef.h> | |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
959e8b5d | 13 | #include <time.h> |
4f5dd394 | 14 | #include <unistd.h> |
2232cac8 | 15 | |
b5efdb8a | 16 | #include "alloc-util.h" |
2c21044f | 17 | #include "conf-files.h" |
29b5eb5a | 18 | #include "device-private.h" |
480ecb7d | 19 | #include "device-util.h" |
8fb3f009 | 20 | #include "dirent-util.h" |
4f5dd394 | 21 | #include "escape.h" |
3ffd4af2 | 22 | #include "fd-util.h" |
fae0f8a0 | 23 | #include "fileio.h" |
fdd21be6 | 24 | #include "fs-util.h" |
7d50b32a | 25 | #include "glob-util.h" |
5ea78a39 YW |
26 | #include "libudev-util.h" |
27 | #include "mkdir.h" | |
4f5dd394 | 28 | #include "path-util.h" |
88b013b2 | 29 | #include "proc-cmdline.h" |
8fcde012 | 30 | #include "stat-util.h" |
f4850a1d | 31 | #include "stdio-util.h" |
915bf0f6 | 32 | #include "strbuf.h" |
07630cea | 33 | #include "string-util.h" |
84b6ad70 | 34 | #include "strv.h" |
5ea78a39 | 35 | #include "strxcpyx.h" |
f4cf2e5b | 36 | #include "sysctl-util.h" |
07a26e42 | 37 | #include "udev-builtin.h" |
4f5dd394 | 38 | #include "udev.h" |
b1d4f8e1 | 39 | #include "user-util.h" |
07630cea | 40 | #include "util.h" |
2232cac8 | 41 | |
a1525d17 | 42 | #define PREALLOC_TOKEN 2048 |
c7521974 | 43 | |
4052400f | 44 | struct uid_gid { |
14cb109d | 45 | unsigned name_off; |
912541b0 | 46 | union { |
a1525d17 KS |
47 | uid_t uid; |
48 | gid_t gid; | |
912541b0 | 49 | }; |
4052400f KS |
50 | }; |
51 | ||
2ad8416d ZJS |
52 | static const char* const rules_dirs[] = { |
53 | "/etc/udev/rules.d", | |
54 | "/run/udev/rules.d", | |
55 | UDEVLIBEXECDIR "/rules.d", | |
4f5dd394 LP |
56 | NULL |
57 | }; | |
2ad8416d | 58 | |
4052400f | 59 | struct udev_rules { |
97f2d76d | 60 | usec_t dirs_ts_usec; |
c4d44cba | 61 | ResolveNameTiming resolve_name_timing; |
912541b0 KS |
62 | |
63 | /* every key in the rules file becomes a token */ | |
64 | struct token *tokens; | |
14cb109d YW |
65 | unsigned token_cur; |
66 | unsigned token_max; | |
912541b0 | 67 | |
ab06eef8 | 68 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 69 | struct strbuf *strbuf; |
912541b0 KS |
70 | |
71 | /* during rule parsing, uid/gid lookup results are cached */ | |
72 | struct uid_gid *uids; | |
14cb109d YW |
73 | unsigned uids_cur; |
74 | unsigned uids_max; | |
912541b0 | 75 | struct uid_gid *gids; |
14cb109d YW |
76 | unsigned gids_cur; |
77 | unsigned gids_max; | |
4052400f KS |
78 | }; |
79 | ||
14cb109d | 80 | static char *rules_str(struct udev_rules *rules, unsigned off) { |
915bf0f6 KS |
81 | return rules->strbuf->buf + off; |
82 | } | |
83 | ||
14cb109d | 84 | static unsigned rules_add_string(struct udev_rules *rules, const char *s) { |
915bf0f6 KS |
85 | return strbuf_add_string(rules->strbuf, s, strlen(s)); |
86 | } | |
87 | ||
8e3ba377 | 88 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 89 | enum operation_type { |
912541b0 | 90 | OP_UNSET, |
b0f7409f | 91 | |
912541b0 KS |
92 | OP_MATCH, |
93 | OP_NOMATCH, | |
94 | OP_MATCH_MAX, | |
b0f7409f | 95 | |
912541b0 | 96 | OP_ADD, |
8e3ba377 | 97 | OP_REMOVE, |
912541b0 KS |
98 | OP_ASSIGN, |
99 | OP_ASSIGN_FINAL, | |
c7521974 KS |
100 | }; |
101 | ||
ac218d9c | 102 | enum string_glob_type { |
912541b0 | 103 | GL_UNSET, |
a1525d17 | 104 | GL_PLAIN, /* no special chars */ |
912541b0 | 105 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
106 | GL_SPLIT, /* multi-value A|B */ |
107 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
108 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
109 | }; |
110 | ||
32028733 | 111 | enum string_subst_type { |
912541b0 KS |
112 | SB_UNSET, |
113 | SB_NONE, | |
114 | SB_FORMAT, | |
115 | SB_SUBSYS, | |
32028733 KS |
116 | }; |
117 | ||
154a7b84 | 118 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 119 | enum token_type { |
912541b0 KS |
120 | TK_UNSET, |
121 | TK_RULE, | |
122 | ||
a1525d17 KS |
123 | TK_M_ACTION, /* val */ |
124 | TK_M_DEVPATH, /* val */ | |
125 | TK_M_KERNEL, /* val */ | |
126 | TK_M_DEVLINK, /* val */ | |
127 | TK_M_NAME, /* val */ | |
128 | TK_M_ENV, /* val, attr */ | |
129 | TK_M_TAG, /* val */ | |
130 | TK_M_SUBSYSTEM, /* val */ | |
131 | TK_M_DRIVER, /* val */ | |
132 | TK_M_WAITFOR, /* val */ | |
133 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 134 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
135 | |
136 | TK_M_PARENTS_MIN, | |
a1525d17 | 137 | TK_M_KERNELS, /* val */ |
912541b0 | 138 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
139 | TK_M_DRIVERS, /* val */ |
140 | TK_M_ATTRS, /* val, attr */ | |
141 | TK_M_TAGS, /* val */ | |
912541b0 KS |
142 | TK_M_PARENTS_MAX, |
143 | ||
a1525d17 | 144 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
145 | TK_M_PROGRAM, /* val */ |
146 | TK_M_IMPORT_FILE, /* val */ | |
147 | TK_M_IMPORT_PROG, /* val */ | |
148 | TK_M_IMPORT_BUILTIN, /* val */ | |
149 | TK_M_IMPORT_DB, /* val */ | |
150 | TK_M_IMPORT_CMDLINE, /* val */ | |
151 | TK_M_IMPORT_PARENT, /* val */ | |
152 | TK_M_RESULT, /* val */ | |
912541b0 KS |
153 | TK_M_MAX, |
154 | ||
155 | TK_A_STRING_ESCAPE_NONE, | |
156 | TK_A_STRING_ESCAPE_REPLACE, | |
157 | TK_A_DB_PERSIST, | |
a1525d17 KS |
158 | TK_A_INOTIFY_WATCH, /* int */ |
159 | TK_A_DEVLINK_PRIO, /* int */ | |
160 | TK_A_OWNER, /* val */ | |
161 | TK_A_GROUP, /* val */ | |
162 | TK_A_MODE, /* val */ | |
163 | TK_A_OWNER_ID, /* uid_t */ | |
164 | TK_A_GROUP_ID, /* gid_t */ | |
165 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 166 | TK_A_TAG, /* val */ |
a1525d17 | 167 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 168 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 169 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
170 | TK_A_NAME, /* val */ |
171 | TK_A_DEVLINK, /* val */ | |
172 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 173 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
174 | TK_A_RUN_BUILTIN, /* val, bool */ |
175 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 176 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
177 | |
178 | TK_END, | |
c7521974 KS |
179 | }; |
180 | ||
3f3aa9f5 | 181 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 182 | struct token { |
912541b0 KS |
183 | union { |
184 | unsigned char type; /* same in rule and key */ | |
185 | struct { | |
186 | enum token_type type:8; | |
187 | bool can_set_name:1; | |
188 | bool has_static_node:1; | |
14cb109d | 189 | unsigned unused:6; |
912541b0 | 190 | unsigned short token_count; |
14cb109d | 191 | unsigned label_off; |
912541b0 KS |
192 | unsigned short filename_off; |
193 | unsigned short filename_line; | |
194 | } rule; | |
195 | struct { | |
196 | enum token_type type:8; | |
197 | enum operation_type op:8; | |
198 | enum string_glob_type glob:8; | |
199 | enum string_subst_type subst:4; | |
200 | enum string_subst_type attrsubst:4; | |
14cb109d | 201 | unsigned value_off; |
912541b0 | 202 | union { |
14cb109d YW |
203 | unsigned attr_off; |
204 | unsigned rule_goto; | |
912541b0 KS |
205 | mode_t mode; |
206 | uid_t uid; | |
207 | gid_t gid; | |
208 | int devlink_prio; | |
912541b0 KS |
209 | int watch; |
210 | enum udev_builtin_cmd builtin_cmd; | |
211 | }; | |
212 | } key; | |
213 | }; | |
4052400f KS |
214 | }; |
215 | ||
912541b0 | 216 | #define MAX_TK 64 |
4052400f | 217 | struct rule_tmp { |
912541b0 KS |
218 | struct udev_rules *rules; |
219 | struct token rule; | |
220 | struct token token[MAX_TK]; | |
14cb109d | 221 | unsigned token_cur; |
4052400f KS |
222 | }; |
223 | ||
baa30fbc | 224 | #ifdef DEBUG |
9ec6e95b | 225 | static const char *operation_str(enum operation_type type) { |
912541b0 | 226 | static const char *operation_strs[] = { |
a1525d17 KS |
227 | [OP_UNSET] = "UNSET", |
228 | [OP_MATCH] = "match", | |
229 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
230 | [OP_MATCH_MAX] = "MATCH_MAX", |
231 | ||
a1525d17 | 232 | [OP_ADD] = "add", |
8e3ba377 | 233 | [OP_REMOVE] = "remove", |
a1525d17 KS |
234 | [OP_ASSIGN] = "assign", |
235 | [OP_ASSIGN_FINAL] = "assign-final", | |
912541b0 KS |
236 | } ; |
237 | ||
238 | return operation_strs[type]; | |
5d6a1fa6 | 239 | } |
4052400f | 240 | |
9ec6e95b | 241 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 242 | static const char *string_glob_strs[] = { |
a1525d17 KS |
243 | [GL_UNSET] = "UNSET", |
244 | [GL_PLAIN] = "plain", | |
245 | [GL_GLOB] = "glob", | |
246 | [GL_SPLIT] = "split", | |
247 | [GL_SPLIT_GLOB] = "split-glob", | |
248 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
249 | }; |
250 | ||
251 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
252 | } |
253 | ||
9ec6e95b | 254 | static const char *token_str(enum token_type type) { |
912541b0 | 255 | static const char *token_strs[] = { |
a1525d17 KS |
256 | [TK_UNSET] = "UNSET", |
257 | [TK_RULE] = "RULE", | |
912541b0 | 258 | |
a1525d17 | 259 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 260 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 261 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 262 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
263 | [TK_M_NAME] = "M NAME", |
264 | [TK_M_ENV] = "M ENV", | |
265 | [TK_M_TAG] = "M TAG", | |
266 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
267 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 268 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 269 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 270 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 271 | |
a1525d17 | 272 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 273 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 274 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 275 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
276 | [TK_M_ATTRS] = "M ATTRS", |
277 | [TK_M_TAGS] = "M TAGS", | |
278 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 279 | |
a1525d17 | 280 | [TK_M_TEST] = "M TEST", |
912541b0 | 281 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
282 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
283 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
284 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
285 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
286 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
287 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
288 | [TK_M_RESULT] = "M RESULT", | |
289 | [TK_M_MAX] = "M MAX", | |
290 | ||
291 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
292 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
293 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
294 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
295 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
296 | [TK_A_OWNER] = "A OWNER", | |
297 | [TK_A_GROUP] = "A GROUP", | |
298 | [TK_A_MODE] = "A MODE", | |
299 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
300 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
301 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 302 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 303 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
304 | [TK_A_ENV] = "A ENV", |
305 | [TK_A_TAG] = "A ENV", | |
306 | [TK_A_NAME] = "A NAME", | |
912541b0 | 307 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 308 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 309 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
310 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
311 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 312 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 313 | |
a1525d17 | 314 | [TK_END] = "END", |
912541b0 KS |
315 | }; |
316 | ||
317 | return token_strs[type]; | |
5d6a1fa6 | 318 | } |
c7521974 | 319 | |
9ec6e95b | 320 | static void dump_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
321 | enum token_type type = token->type; |
322 | enum operation_type op = token->key.op; | |
323 | enum string_glob_type glob = token->key.glob; | |
fa394301 LR |
324 | const char *value = rules_str(rules, token->key.value_off); |
325 | const char *attr = &rules->strbuf->buf[token->key.attr_off]; | |
912541b0 KS |
326 | |
327 | switch (type) { | |
328 | case TK_RULE: | |
329 | { | |
330 | const char *tks_ptr = (char *)rules->tokens; | |
331 | const char *tk_ptr = (char *)token; | |
14cb109d | 332 | unsigned idx = (tk_ptr - tks_ptr) / sizeof(struct token); |
912541b0 | 333 | |
9f6445e3 | 334 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
fa394301 | 335 | &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line, |
baa30fbc | 336 | idx, token->rule.token_count, |
fa394301 | 337 | &rules->strbuf->buf[token->rule.label_off]); |
912541b0 KS |
338 | break; |
339 | } | |
340 | case TK_M_ACTION: | |
341 | case TK_M_DEVPATH: | |
342 | case TK_M_KERNEL: | |
343 | case TK_M_SUBSYSTEM: | |
344 | case TK_M_DRIVER: | |
345 | case TK_M_WAITFOR: | |
346 | case TK_M_DEVLINK: | |
347 | case TK_M_NAME: | |
348 | case TK_M_KERNELS: | |
349 | case TK_M_SUBSYSTEMS: | |
350 | case TK_M_DRIVERS: | |
351 | case TK_M_TAGS: | |
352 | case TK_M_PROGRAM: | |
353 | case TK_M_IMPORT_FILE: | |
354 | case TK_M_IMPORT_PROG: | |
355 | case TK_M_IMPORT_DB: | |
356 | case TK_M_IMPORT_CMDLINE: | |
357 | case TK_M_IMPORT_PARENT: | |
358 | case TK_M_RESULT: | |
359 | case TK_A_NAME: | |
360 | case TK_A_DEVLINK: | |
361 | case TK_A_OWNER: | |
362 | case TK_A_GROUP: | |
363 | case TK_A_MODE: | |
83cd6b75 KS |
364 | case TK_A_RUN_BUILTIN: |
365 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 366 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 367 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
368 | break; |
369 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 370 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
371 | break; |
372 | case TK_M_ATTR: | |
f4cf2e5b | 373 | case TK_M_SYSCTL: |
912541b0 KS |
374 | case TK_M_ATTRS: |
375 | case TK_M_ENV: | |
376 | case TK_A_ATTR: | |
f4cf2e5b | 377 | case TK_A_SYSCTL: |
912541b0 | 378 | case TK_A_ENV: |
9f6445e3 | 379 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 380 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
381 | break; |
382 | case TK_M_TAG: | |
383 | case TK_A_TAG: | |
9f6445e3 | 384 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
385 | break; |
386 | case TK_A_STRING_ESCAPE_NONE: | |
387 | case TK_A_STRING_ESCAPE_REPLACE: | |
388 | case TK_A_DB_PERSIST: | |
9f6445e3 | 389 | log_debug("%s", token_str(type)); |
912541b0 KS |
390 | break; |
391 | case TK_M_TEST: | |
9f6445e3 | 392 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 393 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
394 | break; |
395 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 396 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
397 | break; |
398 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 399 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
400 | break; |
401 | case TK_A_OWNER_ID: | |
9f6445e3 | 402 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
403 | break; |
404 | case TK_A_GROUP_ID: | |
9f6445e3 | 405 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
406 | break; |
407 | case TK_A_MODE_ID: | |
9f6445e3 | 408 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
409 | break; |
410 | case TK_A_STATIC_NODE: | |
9f6445e3 | 411 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 412 | break; |
c26547d6 | 413 | case TK_A_SECLABEL: |
9f6445e3 | 414 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 415 | break; |
912541b0 | 416 | case TK_A_GOTO: |
9f6445e3 | 417 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
418 | break; |
419 | case TK_END: | |
9f6445e3 | 420 | log_debug("* %s", token_str(type)); |
912541b0 KS |
421 | break; |
422 | case TK_M_PARENTS_MIN: | |
423 | case TK_M_PARENTS_MAX: | |
424 | case TK_M_MAX: | |
425 | case TK_UNSET: | |
9f6445e3 | 426 | log_debug("unknown type %u", type); |
912541b0 KS |
427 | break; |
428 | } | |
4052400f | 429 | } |
154a7b84 | 430 | |
9ec6e95b | 431 | static void dump_rules(struct udev_rules *rules) { |
14cb109d | 432 | unsigned i; |
912541b0 | 433 | |
fa394301 | 434 | log_debug("dumping %u (%zu bytes) tokens, %zu (%zu bytes) strings", |
baa30fbc KS |
435 | rules->token_cur, |
436 | rules->token_cur * sizeof(struct token), | |
fa394301 LR |
437 | rules->strbuf->nodes_count, |
438 | rules->strbuf->len); | |
f168c273 | 439 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 440 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
441 | } |
442 | #else | |
4052400f KS |
443 | static inline void dump_token(struct udev_rules *rules, struct token *token) {} |
444 | static inline void dump_rules(struct udev_rules *rules) {} | |
baa30fbc | 445 | #endif /* DEBUG */ |
c7521974 | 446 | |
9ec6e95b | 447 | static int add_token(struct udev_rules *rules, struct token *token) { |
912541b0 KS |
448 | /* grow buffer if needed */ |
449 | if (rules->token_cur+1 >= rules->token_max) { | |
450 | struct token *tokens; | |
14cb109d | 451 | unsigned add; |
912541b0 KS |
452 | |
453 | /* double the buffer size */ | |
454 | add = rules->token_max; | |
455 | if (add < 8) | |
456 | add = 8; | |
457 | ||
62d74c78 | 458 | tokens = reallocarray(rules->tokens, rules->token_max + add, sizeof(struct token)); |
912541b0 KS |
459 | if (tokens == NULL) |
460 | return -1; | |
912541b0 KS |
461 | rules->tokens = tokens; |
462 | rules->token_max += add; | |
463 | } | |
464 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
465 | rules->token_cur++; | |
466 | return 0; | |
c7521974 | 467 | } |
a27cd06c | 468 | |
2da03cbf ZJS |
469 | static void log_unknown_owner(int error, const char *entity, const char *owner) { |
470 | if (IN_SET(abs(error), ENOENT, ESRCH)) | |
471 | log_error("Specified %s '%s' unknown", entity, owner); | |
472 | else | |
473 | log_error_errno(error, "Error resolving %s '%s': %m", entity, owner); | |
474 | } | |
475 | ||
9ec6e95b | 476 | static uid_t add_uid(struct udev_rules *rules, const char *owner) { |
14cb109d | 477 | unsigned i; |
23bf8dd7 | 478 | uid_t uid = 0; |
14cb109d | 479 | unsigned off; |
23bf8dd7 | 480 | int r; |
912541b0 KS |
481 | |
482 | /* lookup, if we know it already */ | |
483 | for (i = 0; i < rules->uids_cur; i++) { | |
484 | off = rules->uids[i].name_off; | |
915bf0f6 | 485 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 486 | uid = rules->uids[i].uid; |
912541b0 KS |
487 | return uid; |
488 | } | |
489 | } | |
fafff8f1 | 490 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
2da03cbf ZJS |
491 | if (r < 0) |
492 | log_unknown_owner(r, "user", owner); | |
912541b0 KS |
493 | |
494 | /* grow buffer if needed */ | |
495 | if (rules->uids_cur+1 >= rules->uids_max) { | |
496 | struct uid_gid *uids; | |
14cb109d | 497 | unsigned add; |
912541b0 KS |
498 | |
499 | /* double the buffer size */ | |
500 | add = rules->uids_max; | |
501 | if (add < 1) | |
502 | add = 8; | |
503 | ||
62d74c78 | 504 | uids = reallocarray(rules->uids, rules->uids_max + add, sizeof(struct uid_gid)); |
912541b0 KS |
505 | if (uids == NULL) |
506 | return uid; | |
912541b0 KS |
507 | rules->uids = uids; |
508 | rules->uids_max += add; | |
509 | } | |
510 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 511 | off = rules_add_string(rules, owner); |
912541b0 KS |
512 | if (off <= 0) |
513 | return uid; | |
514 | rules->uids[rules->uids_cur].name_off = off; | |
515 | rules->uids_cur++; | |
516 | return uid; | |
154a7b84 KS |
517 | } |
518 | ||
9ec6e95b | 519 | static gid_t add_gid(struct udev_rules *rules, const char *group) { |
14cb109d | 520 | unsigned i; |
23bf8dd7 | 521 | gid_t gid = 0; |
14cb109d | 522 | unsigned off; |
23bf8dd7 | 523 | int r; |
912541b0 KS |
524 | |
525 | /* lookup, if we know it already */ | |
526 | for (i = 0; i < rules->gids_cur; i++) { | |
527 | off = rules->gids[i].name_off; | |
915bf0f6 | 528 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 529 | gid = rules->gids[i].gid; |
912541b0 KS |
530 | return gid; |
531 | } | |
532 | } | |
fafff8f1 | 533 | r = get_group_creds(&group, &gid, USER_CREDS_ALLOW_MISSING); |
2da03cbf ZJS |
534 | if (r < 0) |
535 | log_unknown_owner(r, "group", group); | |
912541b0 KS |
536 | |
537 | /* grow buffer if needed */ | |
538 | if (rules->gids_cur+1 >= rules->gids_max) { | |
539 | struct uid_gid *gids; | |
14cb109d | 540 | unsigned add; |
912541b0 KS |
541 | |
542 | /* double the buffer size */ | |
543 | add = rules->gids_max; | |
544 | if (add < 1) | |
545 | add = 8; | |
546 | ||
62d74c78 | 547 | gids = reallocarray(rules->gids, rules->gids_max + add, sizeof(struct uid_gid)); |
912541b0 KS |
548 | if (gids == NULL) |
549 | return gid; | |
912541b0 KS |
550 | rules->gids = gids; |
551 | rules->gids_max += add; | |
552 | } | |
553 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 554 | off = rules_add_string(rules, group); |
912541b0 KS |
555 | if (off <= 0) |
556 | return gid; | |
557 | rules->gids[rules->gids_cur].name_off = off; | |
558 | rules->gids_cur++; | |
559 | return gid; | |
154a7b84 KS |
560 | } |
561 | ||
29b5eb5a | 562 | static int import_property_from_string(sd_device *dev, char *line) { |
912541b0 KS |
563 | char *key; |
564 | char *val; | |
565 | size_t len; | |
566 | ||
567 | /* find key */ | |
568 | key = line; | |
569 | while (isspace(key[0])) | |
570 | key++; | |
571 | ||
572 | /* comment or empty line */ | |
4c701096 | 573 | if (IN_SET(key[0], '#', '\0')) |
29b5eb5a | 574 | return 0; |
912541b0 KS |
575 | |
576 | /* split key/value */ | |
577 | val = strchr(key, '='); | |
29b5eb5a YW |
578 | if (!val) |
579 | return -EINVAL; | |
912541b0 KS |
580 | val[0] = '\0'; |
581 | val++; | |
582 | ||
583 | /* find value */ | |
584 | while (isspace(val[0])) | |
585 | val++; | |
586 | ||
587 | /* terminate key */ | |
588 | len = strlen(key); | |
589 | if (len == 0) | |
29b5eb5a | 590 | return -EINVAL; |
912541b0 KS |
591 | while (isspace(key[len-1])) |
592 | len--; | |
593 | key[len] = '\0'; | |
594 | ||
595 | /* terminate value */ | |
596 | len = strlen(val); | |
597 | if (len == 0) | |
29b5eb5a | 598 | return -EINVAL; |
912541b0 KS |
599 | while (isspace(val[len-1])) |
600 | len--; | |
601 | val[len] = '\0'; | |
602 | ||
603 | if (len == 0) | |
29b5eb5a | 604 | return -EINVAL; |
912541b0 KS |
605 | |
606 | /* unquote */ | |
4c701096 | 607 | if (IN_SET(val[0], '"', '\'')) { |
baaa35ad ZJS |
608 | if (len == 1 || val[len-1] != val[0]) |
609 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), | |
610 | "inconsistent quoting: '%s', skip", | |
611 | line); | |
912541b0 KS |
612 | val[len-1] = '\0'; |
613 | val++; | |
614 | } | |
615 | ||
29b5eb5a | 616 | return device_add_property(dev, key, val); |
be4bedd1 KS |
617 | } |
618 | ||
13c7b75f | 619 | static int import_file_into_properties(sd_device *dev, const char *filename) { |
fae0f8a0 LP |
620 | _cleanup_fclose_ FILE *f = NULL; |
621 | int r; | |
912541b0 | 622 | |
47ef94ac | 623 | f = fopen(filename, "re"); |
fae0f8a0 LP |
624 | if (!f) |
625 | return -errno; | |
626 | ||
627 | for (;;) { | |
628 | _cleanup_free_ char *line = NULL; | |
629 | ||
630 | r = read_line(f, LONG_LINE_MAX, &line); | |
631 | if (r < 0) | |
632 | return r; | |
633 | if (r == 0) | |
634 | break; | |
635 | ||
13c7b75f | 636 | (void) import_property_from_string(dev, line); |
fae0f8a0 LP |
637 | } |
638 | ||
912541b0 | 639 | return 0; |
bd0ed2ff KS |
640 | } |
641 | ||
dd5eddd2 KS |
642 | static int import_program_into_properties(struct udev_event *event, |
643 | usec_t timeout_usec, | |
8314de1d | 644 | const char *program) { |
912541b0 KS |
645 | char result[UTIL_LINE_SIZE]; |
646 | char *line; | |
647 | int err; | |
648 | ||
66f737b4 | 649 | err = udev_event_spawn(event, timeout_usec, true, program, result, sizeof(result)); |
912541b0 KS |
650 | if (err < 0) |
651 | return err; | |
652 | ||
653 | line = result; | |
654 | while (line != NULL) { | |
655 | char *pos; | |
656 | ||
657 | pos = strchr(line, '\n'); | |
658 | if (pos != NULL) { | |
659 | pos[0] = '\0'; | |
660 | pos = &pos[1]; | |
661 | } | |
cf28ad46 | 662 | (void) import_property_from_string(event->dev, line); |
912541b0 KS |
663 | line = pos; |
664 | } | |
665 | return 0; | |
319c6700 KS |
666 | } |
667 | ||
1ce7fecb YW |
668 | static int import_parent_into_properties(sd_device *dev, const char *filter) { |
669 | const char *key, *val; | |
670 | sd_device *parent; | |
671 | int r; | |
912541b0 | 672 | |
3b64e4d4 TG |
673 | assert(dev); |
674 | assert(filter); | |
675 | ||
1ce7fecb YW |
676 | r = sd_device_get_parent(dev, &parent); |
677 | if (r < 0) | |
678 | return r; | |
912541b0 | 679 | |
1ce7fecb | 680 | FOREACH_DEVICE_PROPERTY(parent, key, val) |
ece174c5 | 681 | if (fnmatch(filter, key, 0) == 0) |
1ce7fecb | 682 | device_add_property(dev, key, val); |
912541b0 | 683 | return 0; |
e2ecb34f KS |
684 | } |
685 | ||
f4850a1d ZJS |
686 | static void attr_subst_subdir(char *attr, size_t len) { |
687 | const char *pos, *tail, *path; | |
688 | _cleanup_closedir_ DIR *dir = NULL; | |
689 | struct dirent *dent; | |
690 | ||
691 | pos = strstr(attr, "/*/"); | |
692 | if (!pos) | |
693 | return; | |
694 | ||
695 | tail = pos + 2; | |
696 | path = strndupa(attr, pos - attr + 1); /* include slash at end */ | |
697 | dir = opendir(path); | |
698 | if (dir == NULL) | |
699 | return; | |
700 | ||
8fb3f009 | 701 | FOREACH_DIRENT_ALL(dent, dir, break) |
f4850a1d | 702 | if (dent->d_name[0] != '.') { |
916a8d43 | 703 | char n[strlen(dent->d_name) + strlen(tail) + 1]; |
f4850a1d | 704 | |
916a8d43 ZJS |
705 | strscpyl(n, sizeof n, dent->d_name, tail, NULL); |
706 | if (faccessat(dirfd(dir), n, F_OK, 0) == 0) { | |
f4850a1d ZJS |
707 | strscpyl(attr, len, path, n, NULL); |
708 | break; | |
912541b0 | 709 | } |
912541b0 | 710 | } |
0ea5e96e KS |
711 | } |
712 | ||
2024ed61 | 713 | static int get_key(char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
714 | char *linepos; |
715 | char *temp; | |
7e760b79 | 716 | unsigned i, j; |
912541b0 KS |
717 | |
718 | linepos = *line; | |
719 | if (linepos == NULL || linepos[0] == '\0') | |
720 | return -1; | |
721 | ||
722 | /* skip whitespace */ | |
723 | while (isspace(linepos[0]) || linepos[0] == ',') | |
724 | linepos++; | |
725 | ||
726 | /* get the key */ | |
727 | if (linepos[0] == '\0') | |
728 | return -1; | |
729 | *key = linepos; | |
730 | ||
731 | for (;;) { | |
732 | linepos++; | |
733 | if (linepos[0] == '\0') | |
734 | return -1; | |
735 | if (isspace(linepos[0])) | |
736 | break; | |
737 | if (linepos[0] == '=') | |
738 | break; | |
4c701096 | 739 | if (IN_SET(linepos[0], '+', '-', '!', ':')) |
912541b0 KS |
740 | if (linepos[1] == '=') |
741 | break; | |
742 | } | |
743 | ||
744 | /* remember end of key */ | |
745 | temp = linepos; | |
746 | ||
747 | /* skip whitespace after key */ | |
748 | while (isspace(linepos[0])) | |
749 | linepos++; | |
750 | if (linepos[0] == '\0') | |
751 | return -1; | |
752 | ||
753 | /* get operation type */ | |
754 | if (linepos[0] == '=' && linepos[1] == '=') { | |
755 | *op = OP_MATCH; | |
756 | linepos += 2; | |
757 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
758 | *op = OP_NOMATCH; | |
759 | linepos += 2; | |
760 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
761 | *op = OP_ADD; | |
762 | linepos += 2; | |
8e3ba377 DH |
763 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
764 | *op = OP_REMOVE; | |
765 | linepos += 2; | |
912541b0 KS |
766 | } else if (linepos[0] == '=') { |
767 | *op = OP_ASSIGN; | |
768 | linepos++; | |
769 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
770 | *op = OP_ASSIGN_FINAL; | |
771 | linepos += 2; | |
772 | } else | |
773 | return -1; | |
774 | ||
775 | /* terminate key */ | |
776 | temp[0] = '\0'; | |
777 | ||
778 | /* skip whitespace after operator */ | |
779 | while (isspace(linepos[0])) | |
780 | linepos++; | |
781 | if (linepos[0] == '\0') | |
782 | return -1; | |
783 | ||
784 | /* get the value */ | |
785 | if (linepos[0] == '"') | |
786 | linepos++; | |
787 | else | |
788 | return -1; | |
789 | *value = linepos; | |
790 | ||
791 | /* terminate */ | |
7e760b79 FB |
792 | for (i = 0, j = 0; ; i++, j++) { |
793 | ||
794 | if (linepos[i] == '"') | |
795 | break; | |
796 | ||
797 | if (linepos[i] == '\0') | |
798 | return -1; | |
799 | ||
800 | /* double quotes can be escaped */ | |
801 | if (linepos[i] == '\\') | |
802 | if (linepos[i+1] == '"') | |
803 | i++; | |
804 | ||
805 | linepos[j] = linepos[i]; | |
806 | } | |
807 | linepos[j] = '\0'; | |
912541b0 KS |
808 | |
809 | /* move line to next key */ | |
7e760b79 | 810 | *line = linepos + i + 1; |
912541b0 | 811 | return 0; |
6880b25d | 812 | } |
95776dc6 | 813 | |
6880b25d | 814 | /* extract possible KEY{attr} */ |
2024ed61 | 815 | static const char *get_key_attribute(char *str) { |
912541b0 KS |
816 | char *pos; |
817 | char *attr; | |
818 | ||
819 | attr = strchr(str, '{'); | |
820 | if (attr != NULL) { | |
821 | attr++; | |
822 | pos = strchr(attr, '}'); | |
823 | if (pos == NULL) { | |
25f027c5 | 824 | log_error("Missing closing brace for format"); |
912541b0 KS |
825 | return NULL; |
826 | } | |
827 | pos[0] = '\0'; | |
912541b0 KS |
828 | return attr; |
829 | } | |
830 | return NULL; | |
6880b25d | 831 | } |
95776dc6 | 832 | |
19a8e656 ZJS |
833 | static void rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
834 | enum operation_type op, | |
835 | const char *value, const void *data) { | |
836 | struct token *token = rule_tmp->token + rule_tmp->token_cur; | |
912541b0 KS |
837 | const char *attr = NULL; |
838 | ||
19a8e656 | 839 | assert(rule_tmp->token_cur < ELEMENTSOF(rule_tmp->token)); |
29804cc1 | 840 | memzero(token, sizeof(struct token)); |
912541b0 KS |
841 | |
842 | switch (type) { | |
843 | case TK_M_ACTION: | |
844 | case TK_M_DEVPATH: | |
845 | case TK_M_KERNEL: | |
846 | case TK_M_SUBSYSTEM: | |
847 | case TK_M_DRIVER: | |
848 | case TK_M_WAITFOR: | |
849 | case TK_M_DEVLINK: | |
850 | case TK_M_NAME: | |
851 | case TK_M_KERNELS: | |
852 | case TK_M_SUBSYSTEMS: | |
853 | case TK_M_DRIVERS: | |
854 | case TK_M_TAGS: | |
855 | case TK_M_PROGRAM: | |
856 | case TK_M_IMPORT_FILE: | |
857 | case TK_M_IMPORT_PROG: | |
858 | case TK_M_IMPORT_DB: | |
859 | case TK_M_IMPORT_CMDLINE: | |
860 | case TK_M_IMPORT_PARENT: | |
861 | case TK_M_RESULT: | |
862 | case TK_A_OWNER: | |
863 | case TK_A_GROUP: | |
864 | case TK_A_MODE: | |
8a173387 | 865 | case TK_A_DEVLINK: |
912541b0 KS |
866 | case TK_A_NAME: |
867 | case TK_A_GOTO: | |
868 | case TK_M_TAG: | |
869 | case TK_A_TAG: | |
d6f116a7 | 870 | case TK_A_STATIC_NODE: |
915bf0f6 | 871 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
872 | break; |
873 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 874 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
875 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
876 | break; | |
877 | case TK_M_ENV: | |
878 | case TK_M_ATTR: | |
f4cf2e5b | 879 | case TK_M_SYSCTL: |
912541b0 KS |
880 | case TK_M_ATTRS: |
881 | case TK_A_ATTR: | |
f4cf2e5b | 882 | case TK_A_SYSCTL: |
912541b0 | 883 | case TK_A_ENV: |
c26547d6 | 884 | case TK_A_SECLABEL: |
912541b0 | 885 | attr = data; |
915bf0f6 KS |
886 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
887 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 888 | break; |
912541b0 | 889 | case TK_M_TEST: |
915bf0f6 | 890 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
891 | if (data != NULL) |
892 | token->key.mode = *(mode_t *)data; | |
893 | break; | |
894 | case TK_A_STRING_ESCAPE_NONE: | |
895 | case TK_A_STRING_ESCAPE_REPLACE: | |
896 | case TK_A_DB_PERSIST: | |
897 | break; | |
83cd6b75 | 898 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 899 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 900 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 901 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
902 | break; |
903 | case TK_A_INOTIFY_WATCH: | |
904 | case TK_A_DEVLINK_PRIO: | |
905 | token->key.devlink_prio = *(int *)data; | |
906 | break; | |
907 | case TK_A_OWNER_ID: | |
908 | token->key.uid = *(uid_t *)data; | |
909 | break; | |
910 | case TK_A_GROUP_ID: | |
911 | token->key.gid = *(gid_t *)data; | |
912 | break; | |
913 | case TK_A_MODE_ID: | |
914 | token->key.mode = *(mode_t *)data; | |
915 | break; | |
912541b0 KS |
916 | case TK_RULE: |
917 | case TK_M_PARENTS_MIN: | |
918 | case TK_M_PARENTS_MAX: | |
919 | case TK_M_MAX: | |
920 | case TK_END: | |
921 | case TK_UNSET: | |
19a8e656 | 922 | assert_not_reached("wrong type"); |
912541b0 KS |
923 | } |
924 | ||
925 | if (value != NULL && type < TK_M_MAX) { | |
926 | /* check if we need to split or call fnmatch() while matching rules */ | |
927 | enum string_glob_type glob; | |
928 | int has_split; | |
929 | int has_glob; | |
930 | ||
931 | has_split = (strchr(value, '|') != NULL); | |
e3e0314b | 932 | has_glob = string_is_glob(value); |
912541b0 KS |
933 | if (has_split && has_glob) { |
934 | glob = GL_SPLIT_GLOB; | |
935 | } else if (has_split) { | |
936 | glob = GL_SPLIT; | |
937 | } else if (has_glob) { | |
33502ffe | 938 | if (streq(value, "?*")) |
912541b0 KS |
939 | glob = GL_SOMETHING; |
940 | else | |
941 | glob = GL_GLOB; | |
942 | } else { | |
943 | glob = GL_PLAIN; | |
944 | } | |
945 | token->key.glob = glob; | |
946 | } | |
947 | ||
948 | if (value != NULL && type > TK_M_MAX) { | |
949 | /* check if assigned value has substitution chars */ | |
950 | if (value[0] == '[') | |
951 | token->key.subst = SB_SUBSYS; | |
952 | else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) | |
953 | token->key.subst = SB_FORMAT; | |
954 | else | |
955 | token->key.subst = SB_NONE; | |
956 | } | |
957 | ||
958 | if (attr != NULL) { | |
d6f116a7 | 959 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
960 | if (attr[0] == '[') |
961 | token->key.attrsubst = SB_SUBSYS; | |
962 | else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) | |
963 | token->key.attrsubst = SB_FORMAT; | |
964 | else | |
965 | token->key.attrsubst = SB_NONE; | |
966 | } | |
967 | ||
968 | token->key.type = type; | |
969 | token->key.op = op; | |
970 | rule_tmp->token_cur++; | |
6880b25d | 971 | } |
e57e7bc1 | 972 | |
9ec6e95b | 973 | static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { |
14cb109d YW |
974 | unsigned i; |
975 | unsigned start = 0; | |
976 | unsigned end = rule_tmp->token_cur; | |
912541b0 KS |
977 | |
978 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
979 | enum token_type next_val = TK_UNSET; | |
14cb109d YW |
980 | unsigned next_idx = 0; |
981 | unsigned j; | |
912541b0 KS |
982 | |
983 | /* find smallest value */ | |
984 | for (j = start; j < end; j++) { | |
985 | if (rule_tmp->token[j].type == TK_UNSET) | |
986 | continue; | |
987 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
988 | next_val = rule_tmp->token[j].type; | |
989 | next_idx = j; | |
990 | } | |
991 | } | |
992 | ||
993 | /* add token and mark done */ | |
994 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
995 | return -1; | |
996 | rule_tmp->token[next_idx].type = TK_UNSET; | |
997 | ||
998 | /* shrink range */ | |
999 | if (next_idx == start) | |
1000 | start++; | |
1001 | if (next_idx+1 == end) | |
1002 | end--; | |
1003 | } | |
1004 | return 0; | |
724257d9 GKH |
1005 | } |
1006 | ||
19a8e656 ZJS |
1007 | #define LOG_RULE_ERROR(fmt, ...) log_error("Invalid rule %s:%u: " fmt, filename, lineno, ##__VA_ARGS__) |
1008 | #define LOG_RULE_WARNING(fmt, ...) log_warning("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1009 | #define LOG_RULE_DEBUG(fmt, ...) log_debug("%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) | |
1010 | #define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; } | |
1011 | ||
4fd6af76 | 1012 | static void add_rule(struct udev_rules *rules, char *line, |
14cb109d | 1013 | const char *filename, unsigned filename_off, unsigned lineno) { |
912541b0 | 1014 | char *linepos; |
04a9d3a0 | 1015 | const char *attr; |
84198c18 TG |
1016 | struct rule_tmp rule_tmp = { |
1017 | .rules = rules, | |
1018 | .rule.type = TK_RULE, | |
1019 | }; | |
912541b0 | 1020 | |
775f8b3c KS |
1021 | /* the offset in the rule is limited to unsigned short */ |
1022 | if (filename_off < USHRT_MAX) | |
1023 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1024 | rule_tmp.rule.rule.filename_line = lineno; |
1025 | ||
1026 | linepos = line; | |
1027 | for (;;) { | |
1028 | char *key; | |
1029 | char *value; | |
1030 | enum operation_type op; | |
1031 | ||
2024ed61 | 1032 | if (get_key(&linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1033 | /* Avoid erroring on trailing whitespace. This is probably rare |
1034 | * so save the work for the error case instead of always trying | |
1035 | * to strip the trailing whitespace with strstrip(). */ | |
1036 | while (isblank(*linepos)) | |
1037 | linepos++; | |
1038 | ||
e736cf35 DR |
1039 | /* If we aren't at the end of the line, this is a parsing error. |
1040 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1041 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1042 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1043 | _cleanup_free_ char *tmp; |
1044 | ||
1045 | tmp = cescape(buf); | |
ff49bc32 | 1046 | log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')", |
1291bc89 | 1047 | filename, lineno, linepos - line + 1, tmp); |
6501b52d | 1048 | if (*linepos == '#') |
75716dd8 | 1049 | log_error("hint: comments can only start at beginning of line"); |
1291bc89 | 1050 | } |
912541b0 | 1051 | break; |
e736cf35 | 1052 | } |
912541b0 | 1053 | |
19a8e656 ZJS |
1054 | if (rule_tmp.token_cur >= ELEMENTSOF(rule_tmp.token)) |
1055 | LOG_AND_RETURN("temporary rule array too small, aborting event processing with %u items", rule_tmp.token_cur); | |
1056 | ||
33502ffe | 1057 | if (streq(key, "ACTION")) { |
19a8e656 ZJS |
1058 | if (op > OP_MATCH_MAX) |
1059 | LOG_AND_RETURN("invalid %s operation", key); | |
1060 | ||
912541b0 | 1061 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); |
912541b0 | 1062 | |
99f16bb8 | 1063 | } else if (streq(key, "DEVPATH")) { |
19a8e656 ZJS |
1064 | if (op > OP_MATCH_MAX) |
1065 | LOG_AND_RETURN("invalid %s operation", key); | |
1066 | ||
912541b0 | 1067 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); |
912541b0 | 1068 | |
99f16bb8 | 1069 | } else if (streq(key, "KERNEL")) { |
19a8e656 ZJS |
1070 | if (op > OP_MATCH_MAX) |
1071 | LOG_AND_RETURN("invalid %s operation", key); | |
1072 | ||
912541b0 | 1073 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); |
912541b0 | 1074 | |
99f16bb8 | 1075 | } else if (streq(key, "SUBSYSTEM")) { |
19a8e656 ZJS |
1076 | if (op > OP_MATCH_MAX) |
1077 | LOG_AND_RETURN("invalid %s operation", key); | |
1078 | ||
912541b0 | 1079 | /* bus, class, subsystem events should all be the same */ |
99f16bb8 ZJS |
1080 | if (STR_IN_SET(value, "subsystem", "bus", "class")) { |
1081 | if (!streq(value, "subsystem")) | |
19a8e656 ZJS |
1082 | LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value); |
1083 | ||
912541b0 KS |
1084 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
1085 | } else | |
1086 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
912541b0 | 1087 | |
99f16bb8 | 1088 | } else if (streq(key, "DRIVER")) { |
19a8e656 ZJS |
1089 | if (op > OP_MATCH_MAX) |
1090 | LOG_AND_RETURN("invalid %s operation", key); | |
1091 | ||
912541b0 | 1092 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); |
912541b0 | 1093 | |
99f16bb8 | 1094 | } else if (startswith(key, "ATTR{")) { |
2024ed61 | 1095 | attr = get_key_attribute(key + STRLEN("ATTR")); |
19a8e656 ZJS |
1096 | if (attr == NULL) |
1097 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1098 | ||
1099 | if (op == OP_REMOVE) | |
1100 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1101 | ||
f4cf2e5b | 1102 | if (op < OP_MATCH_MAX) |
912541b0 | 1103 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1104 | else |
912541b0 | 1105 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b | 1106 | |
99f16bb8 | 1107 | } else if (startswith(key, "SYSCTL{")) { |
2024ed61 | 1108 | attr = get_key_attribute(key + STRLEN("SYSCTL")); |
19a8e656 ZJS |
1109 | if (attr == NULL) |
1110 | LOG_AND_RETURN("error parsing %s attribute", "ATTR"); | |
1111 | ||
1112 | if (op == OP_REMOVE) | |
1113 | LOG_AND_RETURN("invalid %s operation", "ATTR"); | |
1114 | ||
f4cf2e5b KS |
1115 | if (op < OP_MATCH_MAX) |
1116 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1117 | else | |
1118 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 | 1119 | |
99f16bb8 | 1120 | } else if (startswith(key, "SECLABEL{")) { |
2024ed61 | 1121 | attr = get_key_attribute(key + STRLEN("SECLABEL")); |
19a8e656 ZJS |
1122 | if (attr == NULL) |
1123 | LOG_AND_RETURN("error parsing %s attribute", "SECLABEL"); | |
1124 | ||
1125 | if (op == OP_REMOVE) | |
1126 | LOG_AND_RETURN("invalid %s operation", "SECLABEL"); | |
c26547d6 KS |
1127 | |
1128 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
c26547d6 | 1129 | |
99f16bb8 | 1130 | } else if (streq(key, "KERNELS")) { |
19a8e656 ZJS |
1131 | if (op > OP_MATCH_MAX) |
1132 | LOG_AND_RETURN("invalid %s operation", key); | |
1133 | ||
912541b0 | 1134 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); |
912541b0 | 1135 | |
99f16bb8 | 1136 | } else if (streq(key, "SUBSYSTEMS")) { |
19a8e656 ZJS |
1137 | if (op > OP_MATCH_MAX) |
1138 | LOG_AND_RETURN("invalid %s operation", key); | |
1139 | ||
912541b0 | 1140 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); |
912541b0 | 1141 | |
99f16bb8 | 1142 | } else if (streq(key, "DRIVERS")) { |
19a8e656 ZJS |
1143 | if (op > OP_MATCH_MAX) |
1144 | LOG_AND_RETURN("invalid %s operation", key); | |
1145 | ||
912541b0 | 1146 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); |
912541b0 | 1147 | |
99f16bb8 | 1148 | } else if (startswith(key, "ATTRS{")) { |
19a8e656 ZJS |
1149 | if (op > OP_MATCH_MAX) |
1150 | LOG_AND_RETURN("invalid %s operation", "ATTRS"); | |
1151 | ||
2024ed61 | 1152 | attr = get_key_attribute(key + STRLEN("ATTRS")); |
19a8e656 ZJS |
1153 | if (attr == NULL) |
1154 | LOG_AND_RETURN("error parsing %s attribute", "ATTRS"); | |
1155 | ||
33502ffe | 1156 | if (startswith(attr, "device/")) |
19a8e656 ZJS |
1157 | LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix"); |
1158 | if (strstr(attr, "../") != NULL) | |
1159 | LOG_RULE_WARNING("direct reference to parent sysfs directory, may break in future kernels; please fix"); | |
912541b0 | 1160 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); |
912541b0 | 1161 | |
99f16bb8 | 1162 | } else if (streq(key, "TAGS")) { |
19a8e656 ZJS |
1163 | if (op > OP_MATCH_MAX) |
1164 | LOG_AND_RETURN("invalid %s operation", key); | |
1165 | ||
912541b0 | 1166 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); |
912541b0 | 1167 | |
99f16bb8 | 1168 | } else if (startswith(key, "ENV{")) { |
2024ed61 | 1169 | attr = get_key_attribute(key + STRLEN("ENV")); |
19a8e656 ZJS |
1170 | if (attr == NULL) |
1171 | LOG_AND_RETURN("error parsing %s attribute", "ENV"); | |
1172 | ||
1173 | if (op == OP_REMOVE) | |
1174 | LOG_AND_RETURN("invalid %s operation", "ENV"); | |
1175 | ||
1176 | if (op < OP_MATCH_MAX) | |
1177 | rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr); | |
1178 | else { | |
99f16bb8 ZJS |
1179 | if (STR_IN_SET(attr, |
1180 | "ACTION", | |
1181 | "SUBSYSTEM", | |
1182 | "DEVTYPE", | |
1183 | "MAJOR", | |
1184 | "MINOR", | |
1185 | "DRIVER", | |
1186 | "IFINDEX", | |
1187 | "DEVNAME", | |
1188 | "DEVLINKS", | |
1189 | "DEVPATH", | |
19a8e656 ZJS |
1190 | "TAGS")) |
1191 | LOG_AND_RETURN("invalid ENV attribute, '%s' cannot be set", attr); | |
1192 | ||
1193 | rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr); | |
912541b0 | 1194 | } |
912541b0 | 1195 | |
99f16bb8 | 1196 | } else if (streq(key, "TAG")) { |
912541b0 KS |
1197 | if (op < OP_MATCH_MAX) |
1198 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1199 | else | |
1200 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
912541b0 | 1201 | |
99f16bb8 | 1202 | } else if (streq(key, "PROGRAM")) { |
19a8e656 ZJS |
1203 | if (op == OP_REMOVE) |
1204 | LOG_AND_RETURN("invalid %s operation", key); | |
1205 | ||
912541b0 | 1206 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
912541b0 | 1207 | |
99f16bb8 | 1208 | } else if (streq(key, "RESULT")) { |
19a8e656 ZJS |
1209 | if (op > OP_MATCH_MAX) |
1210 | LOG_AND_RETURN("invalid %s operation", key); | |
1211 | ||
912541b0 | 1212 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); |
912541b0 | 1213 | |
99f16bb8 | 1214 | } else if (startswith(key, "IMPORT")) { |
2024ed61 | 1215 | attr = get_key_attribute(key + STRLEN("IMPORT")); |
912541b0 | 1216 | if (attr == NULL) { |
19a8e656 | 1217 | LOG_RULE_WARNING("ignoring IMPORT{} with missing type"); |
912541b0 KS |
1218 | continue; |
1219 | } | |
19a8e656 ZJS |
1220 | if (op == OP_REMOVE) |
1221 | LOG_AND_RETURN("invalid %s operation", "IMPORT"); | |
1222 | ||
33502ffe | 1223 | if (streq(attr, "program")) { |
912541b0 KS |
1224 | /* find known built-in command */ |
1225 | if (value[0] != '/') { | |
19a8e656 | 1226 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1227 | |
c45b369d | 1228 | if (cmd >= 0) { |
19a8e656 | 1229 | LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value); |
912541b0 KS |
1230 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1231 | continue; | |
1232 | } | |
1233 | } | |
912541b0 | 1234 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1235 | } else if (streq(attr, "builtin")) { |
19a8e656 | 1236 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1237 | |
c45b369d | 1238 | if (cmd < 0) |
19a8e656 | 1239 | LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown", value); |
912541b0 | 1240 | else |
19a8e656 ZJS |
1241 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1242 | } else if (streq(attr, "file")) | |
912541b0 | 1243 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
19a8e656 | 1244 | else if (streq(attr, "db")) |
912541b0 | 1245 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
19a8e656 | 1246 | else if (streq(attr, "cmdline")) |
912541b0 | 1247 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
19a8e656 | 1248 | else if (streq(attr, "parent")) |
912541b0 | 1249 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
19a8e656 ZJS |
1250 | else |
1251 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "IMPORT", attr); | |
912541b0 | 1252 | |
99f16bb8 | 1253 | } else if (startswith(key, "TEST")) { |
912541b0 KS |
1254 | mode_t mode = 0; |
1255 | ||
19a8e656 ZJS |
1256 | if (op > OP_MATCH_MAX) |
1257 | LOG_AND_RETURN("invalid %s operation", "TEST"); | |
1258 | ||
2024ed61 | 1259 | attr = get_key_attribute(key + STRLEN("TEST")); |
912541b0 KS |
1260 | if (attr != NULL) { |
1261 | mode = strtol(attr, NULL, 8); | |
1262 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
99f16bb8 | 1263 | } else |
912541b0 | 1264 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); |
912541b0 | 1265 | |
99f16bb8 | 1266 | } else if (startswith(key, "RUN")) { |
2024ed61 | 1267 | attr = get_key_attribute(key + STRLEN("RUN")); |
83cd6b75 KS |
1268 | if (attr == NULL) |
1269 | attr = "program"; | |
19a8e656 ZJS |
1270 | if (op == OP_REMOVE) |
1271 | LOG_AND_RETURN("invalid %s operation", "RUN"); | |
83cd6b75 | 1272 | |
33502ffe | 1273 | if (streq(attr, "builtin")) { |
19a8e656 | 1274 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
83cd6b75 | 1275 | |
c45b369d | 1276 | if (cmd < 0) |
19a8e656 | 1277 | LOG_RULE_ERROR("RUN{builtin}: '%s' unknown", value); |
c45b369d YW |
1278 | else |
1279 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
33502ffe | 1280 | } else if (streq(attr, "program")) { |
c45b369d | 1281 | const enum udev_builtin_cmd cmd = _UDEV_BUILTIN_MAX; |
83cd6b75 | 1282 | |
83cd6b75 | 1283 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
99f16bb8 | 1284 | } else |
19a8e656 | 1285 | LOG_RULE_ERROR("ignoring unknown %s{} type '%s'", "RUN", attr); |
912541b0 | 1286 | |
99f16bb8 | 1287 | } else if (streq(key, "LABEL")) { |
19a8e656 ZJS |
1288 | if (op == OP_REMOVE) |
1289 | LOG_AND_RETURN("invalid %s operation", key); | |
1290 | ||
915bf0f6 | 1291 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 | 1292 | |
99f16bb8 | 1293 | } else if (streq(key, "GOTO")) { |
19a8e656 ZJS |
1294 | if (op == OP_REMOVE) |
1295 | LOG_AND_RETURN("invalid %s operation", key); | |
1296 | ||
912541b0 | 1297 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
912541b0 | 1298 | |
99f16bb8 | 1299 | } else if (startswith(key, "NAME")) { |
19a8e656 ZJS |
1300 | if (op == OP_REMOVE) |
1301 | LOG_AND_RETURN("invalid %s operation", key); | |
1302 | ||
1303 | if (op < OP_MATCH_MAX) | |
912541b0 | 1304 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); |
19a8e656 | 1305 | else { |
33502ffe | 1306 | if (streq(value, "%k")) { |
19a8e656 | 1307 | LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove"); |
912541b0 KS |
1308 | continue; |
1309 | } | |
19a8e656 ZJS |
1310 | if (isempty(value)) { |
1311 | LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove"); | |
912541b0 KS |
1312 | continue; |
1313 | } | |
1314 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1315 | } | |
1316 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1317 | |
99f16bb8 | 1318 | } else if (streq(key, "SYMLINK")) { |
19a8e656 ZJS |
1319 | if (op == OP_REMOVE) |
1320 | LOG_AND_RETURN("invalid %s operation", key); | |
1321 | ||
8a173387 | 1322 | if (op < OP_MATCH_MAX) |
912541b0 | 1323 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1324 | else |
1325 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 | 1326 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1327 | |
99f16bb8 | 1328 | } else if (streq(key, "OWNER")) { |
912541b0 KS |
1329 | uid_t uid; |
1330 | char *endptr; | |
1331 | ||
19a8e656 ZJS |
1332 | if (op == OP_REMOVE) |
1333 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1334 | |
912541b0 | 1335 | uid = strtoul(value, &endptr, 10); |
19a8e656 | 1336 | if (endptr[0] == '\0') |
912541b0 | 1337 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
c4d44cba | 1338 | else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1339 | uid = add_uid(rules, value); |
1340 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
c4d44cba | 1341 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
912541b0 | 1342 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1343 | |
912541b0 | 1344 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1345 | |
99f16bb8 | 1346 | } else if (streq(key, "GROUP")) { |
912541b0 KS |
1347 | gid_t gid; |
1348 | char *endptr; | |
1349 | ||
19a8e656 ZJS |
1350 | if (op == OP_REMOVE) |
1351 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1352 | |
912541b0 | 1353 | gid = strtoul(value, &endptr, 10); |
19a8e656 | 1354 | if (endptr[0] == '\0') |
912541b0 | 1355 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
c4d44cba | 1356 | else if ((rules->resolve_name_timing == RESOLVE_NAME_EARLY) && strchr("$%", value[0]) == NULL) { |
912541b0 KS |
1357 | gid = add_gid(rules, value); |
1358 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
c4d44cba | 1359 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
912541b0 | 1360 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1361 | |
912541b0 | 1362 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1363 | |
99f16bb8 | 1364 | } else if (streq(key, "MODE")) { |
912541b0 KS |
1365 | mode_t mode; |
1366 | char *endptr; | |
1367 | ||
19a8e656 ZJS |
1368 | if (op == OP_REMOVE) |
1369 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1370 | |
912541b0 KS |
1371 | mode = strtol(value, &endptr, 8); |
1372 | if (endptr[0] == '\0') | |
1373 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1374 | else | |
1375 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1376 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1377 | |
99f16bb8 | 1378 | } else if (streq(key, "OPTIONS")) { |
912541b0 KS |
1379 | const char *pos; |
1380 | ||
19a8e656 ZJS |
1381 | if (op == OP_REMOVE) |
1382 | LOG_AND_RETURN("invalid %s operation", key); | |
8e3ba377 | 1383 | |
912541b0 KS |
1384 | pos = strstr(value, "link_priority="); |
1385 | if (pos != NULL) { | |
fbd0b64f | 1386 | int prio = atoi(pos + STRLEN("link_priority=")); |
912541b0 KS |
1387 | |
1388 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1389 | } |
1390 | ||
9f20a8a3 | 1391 | pos = strstr(value, "string_escape="); |
912541b0 | 1392 | if (pos != NULL) { |
fbd0b64f | 1393 | pos += STRLEN("string_escape="); |
33502ffe | 1394 | if (startswith(pos, "none")) |
912541b0 | 1395 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1396 | else if (startswith(pos, "replace")) |
912541b0 KS |
1397 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1398 | } | |
1399 | ||
1400 | pos = strstr(value, "db_persist"); | |
1401 | if (pos != NULL) | |
1402 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); | |
1403 | ||
1404 | pos = strstr(value, "nowatch"); | |
b33fa02b LP |
1405 | if (pos) { |
1406 | static const int zero = 0; | |
1407 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &zero); | |
1408 | } else { | |
1409 | static const int one = 1; | |
912541b0 | 1410 | pos = strstr(value, "watch"); |
6d5e65f6 | 1411 | if (pos) |
b33fa02b | 1412 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &one); |
912541b0 KS |
1413 | } |
1414 | ||
1415 | pos = strstr(value, "static_node="); | |
1416 | if (pos != NULL) { | |
fbd0b64f | 1417 | pos += STRLEN("static_node="); |
19a8e656 | 1418 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL); |
912541b0 KS |
1419 | rule_tmp.rule.rule.has_static_node = true; |
1420 | } | |
1421 | ||
19a8e656 ZJS |
1422 | } else |
1423 | LOG_AND_RETURN("unknown key '%s'", key); | |
912541b0 KS |
1424 | } |
1425 | ||
19a8e656 | 1426 | /* add rule token and sort tokens */ |
912541b0 | 1427 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; |
19a8e656 ZJS |
1428 | if (add_token(rules, &rule_tmp.rule) != 0 || sort_token(rules, &rule_tmp) != 0) |
1429 | LOG_RULE_ERROR("failed to add rule token"); | |
c7521974 KS |
1430 | } |
1431 | ||
9ec6e95b | 1432 | static int parse_file(struct udev_rules *rules, const char *filename) { |
6c8aaf0c | 1433 | _cleanup_fclose_ FILE *f = NULL; |
14cb109d YW |
1434 | unsigned first_token; |
1435 | unsigned filename_off; | |
912541b0 KS |
1436 | char line[UTIL_LINE_SIZE]; |
1437 | int line_nr = 0; | |
14cb109d | 1438 | unsigned i; |
912541b0 | 1439 | |
ed88bcfb ZJS |
1440 | f = fopen(filename, "re"); |
1441 | if (!f) { | |
1442 | if (errno == ENOENT) | |
1443 | return 0; | |
fae0f8a0 LP |
1444 | |
1445 | return -errno; | |
775f8b3c | 1446 | } |
912541b0 | 1447 | |
ed88bcfb ZJS |
1448 | if (null_or_empty_fd(fileno(f))) { |
1449 | log_debug("Skipping empty file: %s", filename); | |
1450 | return 0; | |
1451 | } else | |
1452 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1453 | |
1454 | first_token = rules->token_cur; | |
915bf0f6 | 1455 | filename_off = rules_add_string(rules, filename); |
912541b0 KS |
1456 | |
1457 | while (fgets(line, sizeof(line), f) != NULL) { | |
1458 | char *key; | |
1459 | size_t len; | |
1460 | ||
1461 | /* skip whitespace */ | |
1462 | line_nr++; | |
1463 | key = line; | |
1464 | while (isspace(key[0])) | |
1465 | key++; | |
1466 | ||
1467 | /* comment */ | |
1468 | if (key[0] == '#') | |
1469 | continue; | |
1470 | ||
1471 | len = strlen(line); | |
1472 | if (len < 3) | |
1473 | continue; | |
1474 | ||
1475 | /* continue reading if backslash+newline is found */ | |
1476 | while (line[len-2] == '\\') { | |
1477 | if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) | |
1478 | break; | |
1479 | if (strlen(&line[len-2]) < 2) | |
1480 | break; | |
1481 | line_nr++; | |
1482 | len = strlen(line); | |
1483 | } | |
1484 | ||
1485 | if (len+1 >= sizeof(line)) { | |
9f6445e3 | 1486 | log_error("line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1487 | continue; |
1488 | } | |
1489 | add_rule(rules, key, filename, filename_off, line_nr); | |
1490 | } | |
912541b0 KS |
1491 | |
1492 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1493 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1494 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1495 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
14cb109d | 1496 | unsigned j; |
912541b0 KS |
1497 | |
1498 | for (j = i+1; j < rules->token_cur; j++) { | |
1499 | if (rules->tokens[j].type != TK_RULE) | |
1500 | continue; | |
1501 | if (rules->tokens[j].rule.label_off == 0) | |
1502 | continue; | |
915bf0f6 | 1503 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1504 | continue; |
1505 | rules->tokens[i].key.rule_goto = j; | |
1506 | break; | |
1507 | } | |
1508 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1509 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1510 | } |
1511 | } | |
1512 | return 0; | |
c7521974 KS |
1513 | } |
1514 | ||
c4d44cba | 1515 | struct udev_rules *udev_rules_new(ResolveNameTiming resolve_name_timing) { |
912541b0 | 1516 | struct udev_rules *rules; |
912541b0 | 1517 | struct token end_token; |
775f8b3c KS |
1518 | char **files, **f; |
1519 | int r; | |
912541b0 | 1520 | |
c4d44cba YW |
1521 | assert(resolve_name_timing >= 0 && resolve_name_timing < _RESOLVE_NAME_TIMING_MAX); |
1522 | ||
1017d66b YW |
1523 | rules = new(struct udev_rules, 1); |
1524 | if (!rules) | |
912541b0 | 1525 | return NULL; |
1017d66b YW |
1526 | |
1527 | *rules = (struct udev_rules) { | |
c4d44cba | 1528 | .resolve_name_timing = resolve_name_timing, |
1017d66b | 1529 | }; |
912541b0 KS |
1530 | |
1531 | /* init token array and string buffer */ | |
8419d457 | 1532 | rules->tokens = malloc_multiply(PREALLOC_TOKEN, sizeof(struct token)); |
0820a4f0 VP |
1533 | if (rules->tokens == NULL) |
1534 | return udev_rules_unref(rules); | |
912541b0 KS |
1535 | rules->token_max = PREALLOC_TOKEN; |
1536 | ||
915bf0f6 KS |
1537 | rules->strbuf = strbuf_new(); |
1538 | if (!rules->strbuf) | |
0820a4f0 VP |
1539 | return udev_rules_unref(rules); |
1540 | ||
3b8c1cb0 KS |
1541 | udev_rules_check_timestamp(rules); |
1542 | ||
b5084605 | 1543 | r = conf_files_list_strv(&files, ".rules", NULL, 0, rules_dirs); |
775f8b3c | 1544 | if (r < 0) { |
da927ba9 | 1545 | log_error_errno(r, "failed to enumerate rules files: %m"); |
0820a4f0 | 1546 | return udev_rules_unref(rules); |
912541b0 KS |
1547 | } |
1548 | ||
775f8b3c KS |
1549 | /* |
1550 | * The offset value in the rules strct is limited; add all | |
1551 | * rules file names to the beginning of the string buffer. | |
1552 | */ | |
1553 | STRV_FOREACH(f, files) | |
915bf0f6 | 1554 | rules_add_string(rules, *f); |
912541b0 | 1555 | |
775f8b3c KS |
1556 | STRV_FOREACH(f, files) |
1557 | parse_file(rules, *f); | |
1558 | ||
1559 | strv_free(files); | |
912541b0 | 1560 | |
29804cc1 | 1561 | memzero(&end_token, sizeof(struct token)); |
912541b0 KS |
1562 | end_token.type = TK_END; |
1563 | add_token(rules, &end_token); | |
9f6445e3 | 1564 | log_debug("rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1565 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1566 | |
915bf0f6 | 1567 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1568 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1569 | rules->strbuf->in_count, rules->strbuf->in_len, |
1570 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1571 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1572 | |
1573 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1574 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1575 | rules->uids_cur = 0; |
1576 | rules->uids_max = 0; | |
a1e58e8e | 1577 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1578 | rules->gids_cur = 0; |
1579 | rules->gids_max = 0; | |
1580 | ||
1581 | dump_rules(rules); | |
1582 | return rules; | |
c7521974 KS |
1583 | } |
1584 | ||
9ec6e95b | 1585 | struct udev_rules *udev_rules_unref(struct udev_rules *rules) { |
912541b0 KS |
1586 | if (rules == NULL) |
1587 | return NULL; | |
1588 | free(rules->tokens); | |
915bf0f6 | 1589 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1590 | free(rules->uids); |
1591 | free(rules->gids); | |
6b430fdb | 1592 | return mfree(rules); |
c7521974 | 1593 | } |
6880b25d | 1594 | |
9ec6e95b | 1595 | bool udev_rules_check_timestamp(struct udev_rules *rules) { |
5c11fbe3 KS |
1596 | if (!rules) |
1597 | return false; | |
1598 | ||
2ad8416d | 1599 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1600 | } |
1601 | ||
9ec6e95b | 1602 | static int match_key(struct udev_rules *rules, struct token *token, const char *val) { |
915bf0f6 | 1603 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1604 | char *pos; |
1605 | bool match = false; | |
1606 | ||
1607 | if (val == NULL) | |
1608 | val = ""; | |
1609 | ||
1610 | switch (token->key.glob) { | |
1611 | case GL_PLAIN: | |
33502ffe | 1612 | match = (streq(key_value, val)); |
912541b0 KS |
1613 | break; |
1614 | case GL_GLOB: | |
1615 | match = (fnmatch(key_value, val, 0) == 0); | |
1616 | break; | |
1617 | case GL_SPLIT: | |
1618 | { | |
33502ffe | 1619 | const char *s; |
912541b0 KS |
1620 | size_t len; |
1621 | ||
915bf0f6 | 1622 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1623 | len = strlen(val); |
1624 | for (;;) { | |
1625 | const char *next; | |
1626 | ||
33502ffe | 1627 | next = strchr(s, '|'); |
912541b0 | 1628 | if (next != NULL) { |
33502ffe | 1629 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1630 | |
641906e9 | 1631 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1632 | if (match) |
1633 | break; | |
1634 | } else { | |
33502ffe | 1635 | match = (streq(s, val)); |
912541b0 KS |
1636 | break; |
1637 | } | |
33502ffe | 1638 | s = &next[1]; |
912541b0 KS |
1639 | } |
1640 | break; | |
1641 | } | |
1642 | case GL_SPLIT_GLOB: | |
1643 | { | |
1644 | char value[UTIL_PATH_SIZE]; | |
1645 | ||
d5a89d7d | 1646 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 KS |
1647 | key_value = value; |
1648 | while (key_value != NULL) { | |
1649 | pos = strchr(key_value, '|'); | |
1650 | if (pos != NULL) { | |
1651 | pos[0] = '\0'; | |
1652 | pos = &pos[1]; | |
1653 | } | |
912541b0 KS |
1654 | match = (fnmatch(key_value, val, 0) == 0); |
1655 | if (match) | |
1656 | break; | |
1657 | key_value = pos; | |
1658 | } | |
1659 | break; | |
1660 | } | |
1661 | case GL_SOMETHING: | |
1662 | match = (val[0] != '\0'); | |
1663 | break; | |
1664 | case GL_UNSET: | |
1665 | return -1; | |
1666 | } | |
1667 | ||
baa30fbc | 1668 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1669 | return 0; |
baa30fbc | 1670 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1671 | return 0; |
912541b0 | 1672 | return -1; |
6880b25d KS |
1673 | } |
1674 | ||
5ba7e798 YW |
1675 | static int match_attr(struct udev_rules *rules, sd_device *dev, struct udev_event *event, struct token *cur) { |
1676 | char nbuf[UTIL_NAME_SIZE], vbuf[UTIL_NAME_SIZE]; | |
1677 | const char *name, *value; | |
912541b0 KS |
1678 | size_t len; |
1679 | ||
915bf0f6 | 1680 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1681 | switch (cur->key.attrsubst) { |
1682 | case SB_FORMAT: | |
e20a9171 | 1683 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false); |
912541b0 | 1684 | name = nbuf; |
4831981d | 1685 | _fallthrough_; |
912541b0 | 1686 | case SB_NONE: |
5ba7e798 | 1687 | if (sd_device_get_sysattr_value(dev, name, &value) < 0) |
912541b0 KS |
1688 | return -1; |
1689 | break; | |
1690 | case SB_SUBSYS: | |
3839535a | 1691 | if (util_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) != 0) |
912541b0 KS |
1692 | return -1; |
1693 | value = vbuf; | |
1694 | break; | |
1695 | default: | |
1696 | return -1; | |
1697 | } | |
1698 | ||
1699 | /* remove trailing whitespace, if not asked to match for it */ | |
1700 | len = strlen(value); | |
1701 | if (len > 0 && isspace(value[len-1])) { | |
1702 | const char *key_value; | |
1703 | size_t klen; | |
1704 | ||
915bf0f6 | 1705 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1706 | klen = strlen(key_value); |
1707 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1708 | if (value != vbuf) { | |
d5a89d7d | 1709 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1710 | value = vbuf; |
1711 | } | |
1712 | while (len > 0 && isspace(vbuf[--len])) | |
1713 | vbuf[len] = '\0'; | |
912541b0 KS |
1714 | } |
1715 | } | |
1716 | ||
1717 | return match_key(rules, cur, value); | |
6880b25d KS |
1718 | } |
1719 | ||
1720 | enum escape_type { | |
912541b0 KS |
1721 | ESCAPE_UNSET, |
1722 | ESCAPE_NONE, | |
1723 | ESCAPE_REPLACE, | |
6880b25d KS |
1724 | }; |
1725 | ||
d838e145 YW |
1726 | int udev_rules_apply_to_event( |
1727 | struct udev_rules *rules, | |
1728 | struct udev_event *event, | |
1729 | usec_t timeout_usec, | |
9b5150b6 | 1730 | Hashmap *properties_list) { |
cf28ad46 | 1731 | sd_device *dev = event->dev; |
912541b0 | 1732 | enum escape_type esc = ESCAPE_UNSET; |
cf697ec0 YW |
1733 | struct token *cur, *rule; |
1734 | const char *action, *val; | |
912541b0 | 1735 | bool can_set_name; |
88b013b2 | 1736 | int r; |
912541b0 | 1737 | |
d838e145 YW |
1738 | if (!rules->tokens) |
1739 | return 0; | |
912541b0 | 1740 | |
cf697ec0 YW |
1741 | r = sd_device_get_property_value(dev, "ACTION", &action); |
1742 | if (r < 0) | |
1743 | return r; | |
1744 | ||
1745 | can_set_name = (!streq(action, "remove") && | |
1746 | (sd_device_get_devnum(dev, NULL) >= 0 || | |
1747 | sd_device_get_ifindex(dev, NULL) >= 0)); | |
912541b0 KS |
1748 | |
1749 | /* loop through token list, match, run actions or forward to next rule */ | |
1750 | cur = &rules->tokens[0]; | |
1751 | rule = cur; | |
1752 | for (;;) { | |
1753 | dump_token(rules, cur); | |
1754 | switch (cur->type) { | |
1755 | case TK_RULE: | |
1756 | /* current rule */ | |
1757 | rule = cur; | |
1758 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1759 | if (!can_set_name && rule->rule.can_set_name) | |
1760 | goto nomatch; | |
1761 | esc = ESCAPE_UNSET; | |
1762 | break; | |
1763 | case TK_M_ACTION: | |
cf697ec0 | 1764 | if (match_key(rules, cur, action) != 0) |
912541b0 KS |
1765 | goto nomatch; |
1766 | break; | |
1767 | case TK_M_DEVPATH: | |
cf697ec0 YW |
1768 | if (sd_device_get_devpath(dev, &val) < 0) |
1769 | goto nomatch; | |
1770 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1771 | goto nomatch; |
1772 | break; | |
1773 | case TK_M_KERNEL: | |
cf697ec0 YW |
1774 | if (sd_device_get_sysname(dev, &val) < 0) |
1775 | goto nomatch; | |
1776 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1777 | goto nomatch; |
1778 | break; | |
1779 | case TK_M_DEVLINK: { | |
dbea7f24 | 1780 | const char *devlink; |
912541b0 KS |
1781 | bool match = false; |
1782 | ||
cf697ec0 | 1783 | FOREACH_DEVICE_DEVLINK(dev, devlink) |
dbea7f24 | 1784 | if (match_key(rules, cur, devlink + STRLEN("/dev/")) == 0) { |
912541b0 KS |
1785 | match = true; |
1786 | break; | |
1787 | } | |
dbea7f24 | 1788 | |
912541b0 KS |
1789 | if (!match) |
1790 | goto nomatch; | |
1791 | break; | |
1792 | } | |
1793 | case TK_M_NAME: | |
1794 | if (match_key(rules, cur, event->name) != 0) | |
1795 | goto nomatch; | |
1796 | break; | |
1797 | case TK_M_ENV: { | |
915bf0f6 | 1798 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 | 1799 | |
cf697ec0 YW |
1800 | if (sd_device_get_property_value(dev, key_name, &val) < 0) { |
1801 | /* check global properties */ | |
1802 | if (properties_list) | |
1803 | val = hashmap_get(properties_list, key_name); | |
1804 | else | |
1805 | val = NULL; | |
1806 | } | |
adeba500 | 1807 | |
cf697ec0 | 1808 | if (match_key(rules, cur, strempty(val))) |
912541b0 KS |
1809 | goto nomatch; |
1810 | break; | |
1811 | } | |
1812 | case TK_M_TAG: { | |
912541b0 | 1813 | bool match = false; |
dbea7f24 | 1814 | const char *tag; |
912541b0 | 1815 | |
cf697ec0 | 1816 | FOREACH_DEVICE_TAG(dev, tag) |
dbea7f24 | 1817 | if (streq(rules_str(rules, cur->key.value_off), tag)) { |
912541b0 KS |
1818 | match = true; |
1819 | break; | |
1820 | } | |
dbea7f24 | 1821 | |
4302857b FF |
1822 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1823 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1824 | goto nomatch; |
1825 | break; | |
1826 | } | |
1827 | case TK_M_SUBSYSTEM: | |
cf697ec0 YW |
1828 | if (sd_device_get_subsystem(dev, &val) < 0) |
1829 | goto nomatch; | |
1830 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1831 | goto nomatch; |
1832 | break; | |
1833 | case TK_M_DRIVER: | |
cf697ec0 YW |
1834 | if (sd_device_get_driver(dev, &val) < 0) |
1835 | goto nomatch; | |
1836 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1837 | goto nomatch; |
1838 | break; | |
912541b0 | 1839 | case TK_M_ATTR: |
cf697ec0 | 1840 | if (match_attr(rules, dev, event, cur) != 0) |
912541b0 KS |
1841 | goto nomatch; |
1842 | break; | |
f4cf2e5b KS |
1843 | case TK_M_SYSCTL: { |
1844 | char filename[UTIL_PATH_SIZE]; | |
1845 | _cleanup_free_ char *value = NULL; | |
1846 | size_t len; | |
1847 | ||
e20a9171 | 1848 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b KS |
1849 | sysctl_normalize(filename); |
1850 | if (sysctl_read(filename, &value) < 0) | |
1851 | goto nomatch; | |
1852 | ||
1853 | len = strlen(value); | |
1854 | while (len > 0 && isspace(value[--len])) | |
1855 | value[len] = '\0'; | |
1856 | if (match_key(rules, cur, value) != 0) | |
1857 | goto nomatch; | |
1858 | break; | |
1859 | } | |
912541b0 KS |
1860 | case TK_M_KERNELS: |
1861 | case TK_M_SUBSYSTEMS: | |
1862 | case TK_M_DRIVERS: | |
1863 | case TK_M_ATTRS: | |
1864 | case TK_M_TAGS: { | |
1865 | struct token *next; | |
1866 | ||
1867 | /* get whole sequence of parent matches */ | |
1868 | next = cur; | |
1869 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1870 | next++; | |
1871 | ||
1872 | /* loop over parents */ | |
cf697ec0 | 1873 | event->dev_parent = dev; |
912541b0 KS |
1874 | for (;;) { |
1875 | struct token *key; | |
1876 | ||
912541b0 KS |
1877 | /* loop over sequence of parent match keys */ |
1878 | for (key = cur; key < next; key++ ) { | |
1879 | dump_token(rules, key); | |
1880 | switch(key->type) { | |
1881 | case TK_M_KERNELS: | |
f3d241fe YW |
1882 | if (sd_device_get_sysname(event->dev_parent, &val) < 0) |
1883 | goto try_parent; | |
1884 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1885 | goto try_parent; |
1886 | break; | |
1887 | case TK_M_SUBSYSTEMS: | |
f3d241fe YW |
1888 | if (sd_device_get_subsystem(event->dev_parent, &val) < 0) |
1889 | goto try_parent; | |
1890 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1891 | goto try_parent; |
1892 | break; | |
1893 | case TK_M_DRIVERS: | |
f3d241fe YW |
1894 | if (sd_device_get_driver(event->dev_parent, &val) < 0) |
1895 | goto try_parent; | |
1896 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1897 | goto try_parent; |
1898 | break; | |
1899 | case TK_M_ATTRS: | |
f3d241fe | 1900 | if (match_attr(rules, event->dev_parent, event, key) != 0) |
912541b0 KS |
1901 | goto try_parent; |
1902 | break; | |
1903 | case TK_M_TAGS: { | |
f3d241fe | 1904 | bool match = sd_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1905 | |
1906 | if (match && key->key.op == OP_NOMATCH) | |
1907 | goto try_parent; | |
1908 | if (!match && key->key.op == OP_MATCH) | |
1909 | goto try_parent; | |
1910 | break; | |
1911 | } | |
1912 | default: | |
1913 | goto nomatch; | |
1914 | } | |
912541b0 | 1915 | } |
912541b0 KS |
1916 | break; |
1917 | ||
1918 | try_parent: | |
f3d241fe YW |
1919 | if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) { |
1920 | event->dev_parent = NULL; | |
912541b0 | 1921 | goto nomatch; |
f3d241fe | 1922 | } |
912541b0 KS |
1923 | } |
1924 | /* move behind our sequence of parent match keys */ | |
1925 | cur = next; | |
1926 | continue; | |
1927 | } | |
1928 | case TK_M_TEST: { | |
1929 | char filename[UTIL_PATH_SIZE]; | |
1930 | struct stat statbuf; | |
1931 | int match; | |
1932 | ||
e20a9171 | 1933 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename), false); |
3839535a | 1934 | if (util_resolve_subsys_kernel(filename, filename, sizeof(filename), false) != 0) { |
912541b0 KS |
1935 | if (filename[0] != '/') { |
1936 | char tmp[UTIL_PATH_SIZE]; | |
1937 | ||
cf697ec0 YW |
1938 | if (sd_device_get_syspath(dev, &val) < 0) |
1939 | goto nomatch; | |
1940 | ||
d5a89d7d | 1941 | strscpy(tmp, sizeof(tmp), filename); |
cf697ec0 | 1942 | strscpyl(filename, sizeof(filename), val, "/", tmp, NULL); |
912541b0 KS |
1943 | } |
1944 | } | |
1945 | attr_subst_subdir(filename, sizeof(filename)); | |
1946 | ||
1947 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 1948 | if (match && cur->key.mode > 0) |
912541b0 | 1949 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
1950 | if (match && cur->key.op == OP_NOMATCH) |
1951 | goto nomatch; | |
1952 | if (!match && cur->key.op == OP_MATCH) | |
1953 | goto nomatch; | |
1954 | break; | |
1955 | } | |
912541b0 | 1956 | case TK_M_PROGRAM: { |
cf697ec0 | 1957 | char program[UTIL_PATH_SIZE], result[UTIL_LINE_SIZE]; |
912541b0 | 1958 | |
a1e58e8e | 1959 | event->program_result = mfree(event->program_result); |
e20a9171 | 1960 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program), false); |
9f6445e3 | 1961 | log_debug("PROGRAM '%s' %s:%u", |
baa30fbc | 1962 | program, |
915bf0f6 | 1963 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 1964 | rule->rule.filename_line); |
912541b0 | 1965 | |
66f737b4 | 1966 | if (udev_event_spawn(event, timeout_usec, true, program, result, sizeof(result)) < 0) { |
912541b0 KS |
1967 | if (cur->key.op != OP_NOMATCH) |
1968 | goto nomatch; | |
1969 | } else { | |
1970 | int count; | |
1971 | ||
7546145e | 1972 | delete_trailing_chars(result, "\n"); |
4c701096 | 1973 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
1974 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); |
1975 | if (count > 0) | |
9f6445e3 | 1976 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
1977 | } |
1978 | event->program_result = strdup(result); | |
912541b0 KS |
1979 | if (cur->key.op == OP_NOMATCH) |
1980 | goto nomatch; | |
1981 | } | |
1982 | break; | |
1983 | } | |
1984 | case TK_M_IMPORT_FILE: { | |
1985 | char import[UTIL_PATH_SIZE]; | |
1986 | ||
e20a9171 | 1987 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
cf697ec0 | 1988 | if (import_file_into_properties(dev, import) != 0) |
912541b0 KS |
1989 | if (cur->key.op != OP_NOMATCH) |
1990 | goto nomatch; | |
1991 | break; | |
1992 | } | |
1993 | case TK_M_IMPORT_PROG: { | |
1994 | char import[UTIL_PATH_SIZE]; | |
1995 | ||
e20a9171 | 1996 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
9f6445e3 | 1997 | log_debug("IMPORT '%s' %s:%u", |
baa30fbc | 1998 | import, |
915bf0f6 | 1999 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2000 | rule->rule.filename_line); |
912541b0 | 2001 | |
66f737b4 | 2002 | if (import_program_into_properties(event, timeout_usec, import) != 0) |
912541b0 KS |
2003 | if (cur->key.op != OP_NOMATCH) |
2004 | goto nomatch; | |
2005 | break; | |
2006 | } | |
2007 | case TK_M_IMPORT_BUILTIN: { | |
2008 | char command[UTIL_PATH_SIZE]; | |
2009 | ||
2010 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2011 | /* check if we ran already */ | |
2012 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
9f6445e3 | 2013 | log_debug("IMPORT builtin skip '%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 | /* return the result from earlier run */ |
2018 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2019 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2020 | goto nomatch; |
2021 | break; | |
2022 | } | |
2023 | /* mark as ran */ | |
2024 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2025 | } | |
2026 | ||
e20a9171 | 2027 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command), false); |
9f6445e3 | 2028 | log_debug("IMPORT builtin '%s' %s:%u", |
baa30fbc | 2029 | udev_builtin_name(cur->key.builtin_cmd), |
915bf0f6 | 2030 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2031 | rule->rule.filename_line); |
912541b0 | 2032 | |
cf697ec0 | 2033 | r = udev_builtin_run(dev, cur->key.builtin_cmd, command, false); |
d354690e | 2034 | if (r < 0) { |
912541b0 | 2035 | /* remember failure */ |
d354690e YW |
2036 | log_debug_errno(r, "IMPORT builtin '%s' fails: %m", |
2037 | udev_builtin_name(cur->key.builtin_cmd)); | |
912541b0 KS |
2038 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2039 | if (cur->key.op != OP_NOMATCH) | |
2040 | goto nomatch; | |
2041 | } | |
2042 | break; | |
2043 | } | |
2044 | case TK_M_IMPORT_DB: { | |
cf697ec0 | 2045 | const char *key; |
912541b0 | 2046 | |
cf697ec0 | 2047 | key = rules_str(rules, cur->key.value_off); |
a6da77b7 YW |
2048 | if (event->dev_db_clone && |
2049 | sd_device_get_property_value(event->dev_db_clone, key, &val) >= 0) | |
cf697ec0 | 2050 | device_add_property(dev, key, val); |
480ecb7d YW |
2051 | else if (cur->key.op != OP_NOMATCH) |
2052 | goto nomatch; | |
912541b0 KS |
2053 | break; |
2054 | } | |
2055 | case TK_M_IMPORT_CMDLINE: { | |
88b013b2 | 2056 | _cleanup_free_ char *value = NULL; |
912541b0 | 2057 | bool imported = false; |
88b013b2 | 2058 | const char *key; |
912541b0 | 2059 | |
88b013b2 | 2060 | key = rules_str(rules, cur->key.value_off); |
88b013b2 LP |
2061 | r = proc_cmdline_get_key(key, PROC_CMDLINE_VALUE_OPTIONAL, &value); |
2062 | if (r < 0) | |
2063 | log_debug_errno(r, "Failed to read %s from /proc/cmdline, ignoring: %m", key); | |
2064 | else if (r > 0) { | |
2065 | imported = true; | |
2066 | ||
2067 | if (value) | |
cf697ec0 | 2068 | device_add_property(dev, key, value); |
88b013b2 LP |
2069 | else |
2070 | /* we import simple flags as 'FLAG=1' */ | |
cf697ec0 | 2071 | device_add_property(dev, key, "1"); |
912541b0 | 2072 | } |
88b013b2 | 2073 | |
912541b0 KS |
2074 | if (!imported && cur->key.op != OP_NOMATCH) |
2075 | goto nomatch; | |
2076 | break; | |
2077 | } | |
2078 | case TK_M_IMPORT_PARENT: { | |
2079 | char import[UTIL_PATH_SIZE]; | |
2080 | ||
e20a9171 | 2081 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
cf697ec0 | 2082 | if (import_parent_into_properties(dev, import) != 0) |
912541b0 KS |
2083 | if (cur->key.op != OP_NOMATCH) |
2084 | goto nomatch; | |
2085 | break; | |
2086 | } | |
2087 | case TK_M_RESULT: | |
2088 | if (match_key(rules, cur, event->program_result) != 0) | |
2089 | goto nomatch; | |
2090 | break; | |
2091 | case TK_A_STRING_ESCAPE_NONE: | |
2092 | esc = ESCAPE_NONE; | |
2093 | break; | |
2094 | case TK_A_STRING_ESCAPE_REPLACE: | |
2095 | esc = ESCAPE_REPLACE; | |
2096 | break; | |
2097 | case TK_A_DB_PERSIST: | |
cf697ec0 | 2098 | device_set_db_persist(dev); |
912541b0 KS |
2099 | break; |
2100 | case TK_A_INOTIFY_WATCH: | |
2101 | if (event->inotify_watch_final) | |
2102 | break; | |
2103 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2104 | event->inotify_watch_final = true; | |
2105 | event->inotify_watch = cur->key.watch; | |
2106 | break; | |
2107 | case TK_A_DEVLINK_PRIO: | |
cf697ec0 | 2108 | device_set_devlink_priority(dev, cur->key.devlink_prio); |
912541b0 KS |
2109 | break; |
2110 | case TK_A_OWNER: { | |
2111 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2112 | const char *ow = owner; |
912541b0 KS |
2113 | |
2114 | if (event->owner_final) | |
2115 | break; | |
2116 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2117 | event->owner_final = true; | |
e20a9171 | 2118 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner), false); |
1edefa4f | 2119 | event->owner_set = true; |
fafff8f1 | 2120 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2121 | if (r < 0) { |
2da03cbf | 2122 | log_unknown_owner(r, "user", owner); |
23bf8dd7 TG |
2123 | event->uid = 0; |
2124 | } | |
9f6445e3 | 2125 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2126 | event->uid, |
915bf0f6 | 2127 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2128 | rule->rule.filename_line); |
912541b0 KS |
2129 | break; |
2130 | } | |
2131 | case TK_A_GROUP: { | |
2132 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2133 | const char *gr = group; |
912541b0 KS |
2134 | |
2135 | if (event->group_final) | |
2136 | break; | |
2137 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2138 | event->group_final = true; | |
e20a9171 | 2139 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group), false); |
1edefa4f | 2140 | event->group_set = true; |
fafff8f1 | 2141 | r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2142 | if (r < 0) { |
2da03cbf | 2143 | log_unknown_owner(r, "group", group); |
23bf8dd7 TG |
2144 | event->gid = 0; |
2145 | } | |
9f6445e3 | 2146 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2147 | event->gid, |
915bf0f6 | 2148 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2149 | rule->rule.filename_line); |
912541b0 KS |
2150 | break; |
2151 | } | |
2152 | case TK_A_MODE: { | |
cf697ec0 | 2153 | char mode_str[UTIL_NAME_SIZE], *endptr; |
912541b0 | 2154 | mode_t mode; |
912541b0 KS |
2155 | |
2156 | if (event->mode_final) | |
2157 | break; | |
e20a9171 | 2158 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str), false); |
912541b0 KS |
2159 | mode = strtol(mode_str, &endptr, 8); |
2160 | if (endptr[0] != '\0') { | |
9f6445e3 | 2161 | log_error("ignoring invalid mode '%s'", mode_str); |
912541b0 KS |
2162 | break; |
2163 | } | |
2164 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2165 | event->mode_final = true; | |
2166 | event->mode_set = true; | |
2167 | event->mode = mode; | |
9f6445e3 | 2168 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2169 | event->mode, |
915bf0f6 | 2170 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2171 | rule->rule.filename_line); |
912541b0 KS |
2172 | break; |
2173 | } | |
2174 | case TK_A_OWNER_ID: | |
2175 | if (event->owner_final) | |
2176 | break; | |
2177 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2178 | event->owner_final = true; | |
1edefa4f | 2179 | event->owner_set = true; |
912541b0 | 2180 | event->uid = cur->key.uid; |
9f6445e3 | 2181 | log_debug("OWNER %u %s:%u", |
baa30fbc | 2182 | event->uid, |
915bf0f6 | 2183 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2184 | rule->rule.filename_line); |
912541b0 KS |
2185 | break; |
2186 | case TK_A_GROUP_ID: | |
2187 | if (event->group_final) | |
2188 | break; | |
2189 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2190 | event->group_final = true; | |
1edefa4f | 2191 | event->group_set = true; |
912541b0 | 2192 | event->gid = cur->key.gid; |
9f6445e3 | 2193 | log_debug("GROUP %u %s:%u", |
baa30fbc | 2194 | event->gid, |
915bf0f6 | 2195 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2196 | rule->rule.filename_line); |
912541b0 KS |
2197 | break; |
2198 | case TK_A_MODE_ID: | |
2199 | if (event->mode_final) | |
2200 | break; | |
2201 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2202 | event->mode_final = true; | |
2203 | event->mode_set = true; | |
2204 | event->mode = cur->key.mode; | |
9f6445e3 | 2205 | log_debug("MODE %#o %s:%u", |
baa30fbc | 2206 | event->mode, |
915bf0f6 | 2207 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2208 | rule->rule.filename_line); |
912541b0 | 2209 | break; |
c26547d6 | 2210 | case TK_A_SECLABEL: { |
d838e145 | 2211 | _cleanup_free_ char *name = NULL, *label = NULL; |
4f985bd8 | 2212 | char label_str[UTIL_LINE_SIZE] = {}; |
c26547d6 | 2213 | |
d838e145 YW |
2214 | name = strdup(rules_str(rules, cur->key.attr_off)); |
2215 | if (!name) | |
2216 | return log_oom(); | |
2217 | ||
e20a9171 | 2218 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), label_str, sizeof(label_str), false); |
d838e145 YW |
2219 | if (!isempty(label_str)) |
2220 | label = strdup(label_str); | |
4f985bd8 | 2221 | else |
d838e145 YW |
2222 | label = strdup(rules_str(rules, cur->key.value_off)); |
2223 | if (!label) | |
2224 | return log_oom(); | |
4f985bd8 | 2225 | |
4c701096 | 2226 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
d838e145 YW |
2227 | hashmap_clear_free_free(event->seclabel_list); |
2228 | ||
2229 | r = hashmap_ensure_allocated(&event->seclabel_list, NULL); | |
2230 | if (r < 0) | |
2231 | return log_oom(); | |
2232 | ||
2233 | r = hashmap_put(event->seclabel_list, name, label); | |
2234 | if (r < 0) | |
2235 | return log_oom(); | |
2236 | ||
2237 | name = label = NULL; | |
2238 | ||
9f6445e3 | 2239 | log_debug("SECLABEL{%s}='%s' %s:%u", |
c26547d6 KS |
2240 | name, label, |
2241 | rules_str(rules, rule->rule.filename_off), | |
2242 | rule->rule.filename_line); | |
2243 | break; | |
2244 | } | |
912541b0 | 2245 | case TK_A_ENV: { |
07845c14 | 2246 | char value_new[UTIL_NAME_SIZE]; |
cf697ec0 | 2247 | const char *name, *value_old; |
912541b0 | 2248 | |
cf697ec0 YW |
2249 | name = rules_str(rules, cur->key.attr_off); |
2250 | val = rules_str(rules, cur->key.value_off); | |
2251 | if (val[0] == '\0') { | |
07845c14 KS |
2252 | if (cur->key.op == OP_ADD) |
2253 | break; | |
cf697ec0 | 2254 | device_add_property(dev, name, NULL); |
07845c14 | 2255 | break; |
912541b0 | 2256 | } |
07845c14 | 2257 | |
cf697ec0 YW |
2258 | if (cur->key.op == OP_ADD && |
2259 | sd_device_get_property_value(dev, name, &value_old) >= 0) { | |
07845c14 KS |
2260 | char temp[UTIL_NAME_SIZE]; |
2261 | ||
2262 | /* append value separated by space */ | |
cf697ec0 | 2263 | udev_event_apply_format(event, val, temp, sizeof(temp), false); |
d5a89d7d | 2264 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 | 2265 | } else |
cf697ec0 | 2266 | udev_event_apply_format(event, val, value_new, sizeof(value_new), false); |
07845c14 | 2267 | |
cf697ec0 | 2268 | device_add_property(dev, name, value_new); |
912541b0 KS |
2269 | break; |
2270 | } | |
2271 | case TK_A_TAG: { | |
2272 | char tag[UTIL_PATH_SIZE]; | |
2273 | const char *p; | |
2274 | ||
e20a9171 | 2275 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag), false); |
4c701096 | 2276 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2277 | device_cleanup_tags(dev); |
912541b0 KS |
2278 | for (p = tag; *p != '\0'; p++) { |
2279 | if ((*p >= 'a' && *p <= 'z') || | |
2280 | (*p >= 'A' && *p <= 'Z') || | |
2281 | (*p >= '0' && *p <= '9') || | |
4c701096 | 2282 | IN_SET(*p, '-', '_')) |
912541b0 | 2283 | continue; |
9f6445e3 | 2284 | log_error("ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2285 | break; |
2286 | } | |
8e3ba377 | 2287 | if (cur->key.op == OP_REMOVE) |
cf697ec0 | 2288 | device_remove_tag(dev, tag); |
8e3ba377 | 2289 | else |
cf697ec0 | 2290 | device_add_tag(dev, tag); |
912541b0 KS |
2291 | break; |
2292 | } | |
2293 | case TK_A_NAME: { | |
912541b0 | 2294 | char name_str[UTIL_PATH_SIZE]; |
cf697ec0 | 2295 | const char *name; |
912541b0 KS |
2296 | int count; |
2297 | ||
cf697ec0 | 2298 | name = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2299 | if (event->name_final) |
2300 | break; | |
2301 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2302 | event->name_final = true; | |
e20a9171 | 2303 | udev_event_apply_format(event, name, name_str, sizeof(name_str), false); |
4c701096 | 2304 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
2305 | count = util_replace_chars(name_str, "/"); |
2306 | if (count > 0) | |
9f6445e3 | 2307 | log_debug("%i character(s) replaced", count); |
912541b0 | 2308 | } |
cf697ec0 YW |
2309 | if (sd_device_get_devnum(dev, NULL) >= 0 && |
2310 | (sd_device_get_devname(dev, &val) < 0 || | |
2311 | !streq(name_str, val + STRLEN("/dev/")))) { | |
99f16bb8 ZJS |
2312 | log_error("NAME=\"%s\" ignored, kernel device nodes cannot be renamed; please fix it in %s:%u\n", |
2313 | name, | |
2314 | rules_str(rules, rule->rule.filename_off), | |
2315 | rule->rule.filename_line); | |
6ada823a | 2316 | break; |
0ecfcbd4 | 2317 | } |
d838e145 YW |
2318 | if (free_and_strdup(&event->name, name_str) < 0) |
2319 | return log_oom(); | |
2320 | ||
9f6445e3 | 2321 | log_debug("NAME '%s' %s:%u", |
baa30fbc | 2322 | event->name, |
915bf0f6 | 2323 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2324 | rule->rule.filename_line); |
912541b0 KS |
2325 | break; |
2326 | } | |
2327 | case TK_A_DEVLINK: { | |
cf697ec0 | 2328 | char temp[UTIL_PATH_SIZE], filename[UTIL_PATH_SIZE], *pos, *next; |
912541b0 KS |
2329 | int count = 0; |
2330 | ||
2331 | if (event->devlink_final) | |
2332 | break; | |
cf697ec0 | 2333 | if (sd_device_get_devnum(dev, NULL) < 0) |
912541b0 KS |
2334 | break; |
2335 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2336 | event->devlink_final = true; | |
4c701096 | 2337 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2338 | device_cleanup_devlinks(dev); |
912541b0 KS |
2339 | |
2340 | /* allow multiple symlinks separated by spaces */ | |
0a10235e | 2341 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp), esc != ESCAPE_NONE); |
912541b0 KS |
2342 | if (esc == ESCAPE_UNSET) |
2343 | count = util_replace_chars(temp, "/ "); | |
2344 | else if (esc == ESCAPE_REPLACE) | |
2345 | count = util_replace_chars(temp, "/"); | |
2346 | if (count > 0) | |
9f6445e3 | 2347 | log_debug("%i character(s) replaced" , count); |
912541b0 KS |
2348 | pos = temp; |
2349 | while (isspace(pos[0])) | |
2350 | pos++; | |
2351 | next = strchr(pos, ' '); | |
cf697ec0 | 2352 | while (next) { |
912541b0 | 2353 | next[0] = '\0'; |
9f6445e3 | 2354 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2355 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2356 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2357 | device_add_devlink(dev, filename); |
912541b0 KS |
2358 | while (isspace(next[1])) |
2359 | next++; | |
2360 | pos = &next[1]; | |
2361 | next = strchr(pos, ' '); | |
2362 | } | |
2363 | if (pos[0] != '\0') { | |
9f6445e3 | 2364 | log_debug("LINK '%s' %s:%u", pos, |
915bf0f6 | 2365 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); |
d5a89d7d | 2366 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2367 | device_add_devlink(dev, filename); |
912541b0 KS |
2368 | } |
2369 | break; | |
2370 | } | |
2371 | case TK_A_ATTR: { | |
cf697ec0 | 2372 | char attr[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
fdd21be6 | 2373 | _cleanup_fclose_ FILE *f = NULL; |
cf697ec0 | 2374 | const char *key_name; |
912541b0 | 2375 | |
cf697ec0 | 2376 | key_name = rules_str(rules, cur->key.attr_off); |
3839535a | 2377 | if (util_resolve_subsys_kernel(key_name, attr, sizeof(attr), false) != 0 && |
cf697ec0 YW |
2378 | sd_device_get_syspath(dev, &val) >= 0) |
2379 | strscpyl(attr, sizeof(attr), val, "/", key_name, NULL); | |
912541b0 KS |
2380 | attr_subst_subdir(attr, sizeof(attr)); |
2381 | ||
e20a9171 | 2382 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
9f6445e3 | 2383 | log_debug("ATTR '%s' writing '%s' %s:%u", attr, value, |
915bf0f6 | 2384 | rules_str(rules, rule->rule.filename_off), |
baa30fbc | 2385 | rule->rule.filename_line); |
47ef94ac | 2386 | f = fopen(attr, "we"); |
fdd21be6 | 2387 | if (f == NULL) |
56f64d95 | 2388 | log_error_errno(errno, "error opening ATTR{%s} for writing: %m", attr); |
fdd21be6 ZJS |
2389 | else if (fprintf(f, "%s", value) <= 0) |
2390 | log_error_errno(errno, "error writing ATTR{%s}: %m", attr); | |
912541b0 KS |
2391 | break; |
2392 | } | |
f4cf2e5b | 2393 | case TK_A_SYSCTL: { |
cf697ec0 | 2394 | char filename[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
f4cf2e5b | 2395 | |
e20a9171 | 2396 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b | 2397 | sysctl_normalize(filename); |
e20a9171 | 2398 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
f4cf2e5b KS |
2399 | log_debug("SYSCTL '%s' writing '%s' %s:%u", filename, value, |
2400 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
2401 | r = sysctl_write(filename, value); | |
2402 | if (r < 0) | |
46b57b6e | 2403 | log_error_errno(r, "error writing SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2404 | break; |
2405 | } | |
83cd6b75 KS |
2406 | case TK_A_RUN_BUILTIN: |
2407 | case TK_A_RUN_PROGRAM: { | |
29448498 YW |
2408 | _cleanup_free_ char *cmd = NULL; |
2409 | ||
2410 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) { | |
2411 | void *p; | |
2412 | ||
2413 | while ((p = hashmap_steal_first_key(event->run_list))) | |
2414 | free(p); | |
2415 | } | |
2416 | ||
2417 | r = hashmap_ensure_allocated(&event->run_list, NULL); | |
2418 | if (r < 0) | |
2419 | return log_oom(); | |
2420 | ||
2421 | cmd = strdup(rules_str(rules, cur->key.value_off)); | |
2422 | if (!cmd) | |
2423 | return log_oom(); | |
2424 | ||
2425 | r = hashmap_put(event->run_list, cmd, INT_TO_PTR(cur->key.builtin_cmd)); | |
2426 | if (r < 0) | |
2427 | return log_oom(); | |
2428 | ||
2429 | cmd = NULL; | |
83cd6b75 | 2430 | |
9f6445e3 | 2431 | log_debug("RUN '%s' %s:%u", |
915bf0f6 KS |
2432 | rules_str(rules, cur->key.value_off), |
2433 | rules_str(rules, rule->rule.filename_off), | |
baa30fbc | 2434 | rule->rule.filename_line); |
912541b0 KS |
2435 | break; |
2436 | } | |
2437 | case TK_A_GOTO: | |
2438 | if (cur->key.rule_goto == 0) | |
2439 | break; | |
2440 | cur = &rules->tokens[cur->key.rule_goto]; | |
2441 | continue; | |
2442 | case TK_END: | |
d838e145 | 2443 | return 0; |
912541b0 KS |
2444 | |
2445 | case TK_M_PARENTS_MIN: | |
2446 | case TK_M_PARENTS_MAX: | |
2447 | case TK_M_MAX: | |
2448 | case TK_UNSET: | |
9f6445e3 | 2449 | log_error("wrong type %u", cur->type); |
912541b0 KS |
2450 | goto nomatch; |
2451 | } | |
2452 | ||
2453 | cur++; | |
2454 | continue; | |
2455 | nomatch: | |
2456 | /* fast-forward to next rule */ | |
2457 | cur = rule + rule->rule.token_count; | |
912541b0 | 2458 | } |
d838e145 YW |
2459 | |
2460 | return 0; | |
6880b25d | 2461 | } |
761dfddc | 2462 | |
9ec6e95b | 2463 | int udev_rules_apply_static_dev_perms(struct udev_rules *rules) { |
912541b0 KS |
2464 | struct token *cur; |
2465 | struct token *rule; | |
2466 | uid_t uid = 0; | |
2467 | gid_t gid = 0; | |
2468 | mode_t mode = 0; | |
84b6ad70 TG |
2469 | _cleanup_strv_free_ char **tags = NULL; |
2470 | char **t; | |
2471 | FILE *f = NULL; | |
2472 | _cleanup_free_ char *path = NULL; | |
fdd21be6 | 2473 | int r; |
912541b0 KS |
2474 | |
2475 | if (rules->tokens == NULL) | |
84b6ad70 | 2476 | return 0; |
912541b0 KS |
2477 | |
2478 | cur = &rules->tokens[0]; | |
2479 | rule = cur; | |
2480 | for (;;) { | |
2481 | switch (cur->type) { | |
2482 | case TK_RULE: | |
2483 | /* current rule */ | |
2484 | rule = cur; | |
2485 | ||
2486 | /* skip rules without a static_node tag */ | |
2487 | if (!rule->rule.has_static_node) | |
2488 | goto next; | |
2489 | ||
2490 | uid = 0; | |
2491 | gid = 0; | |
2492 | mode = 0; | |
97b11eed | 2493 | tags = strv_free(tags); |
912541b0 KS |
2494 | break; |
2495 | case TK_A_OWNER_ID: | |
2496 | uid = cur->key.uid; | |
2497 | break; | |
2498 | case TK_A_GROUP_ID: | |
2499 | gid = cur->key.gid; | |
2500 | break; | |
2501 | case TK_A_MODE_ID: | |
2502 | mode = cur->key.mode; | |
84b6ad70 TG |
2503 | break; |
2504 | case TK_A_TAG: | |
2505 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2506 | if (r < 0) | |
2507 | goto finish; | |
2508 | ||
912541b0 KS |
2509 | break; |
2510 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2511 | char device_node[UTIL_PATH_SIZE]; |
2512 | char tags_dir[UTIL_PATH_SIZE]; | |
2513 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2514 | struct stat stats; |
2515 | ||
2516 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2517 | |
84b6ad70 | 2518 | if (mode == 0 && uid == 0 && gid == 0 && tags == NULL) |
912541b0 | 2519 | goto next; |
d6f116a7 | 2520 | |
84b6ad70 | 2521 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2522 | if (stat(device_node, &stats) != 0) |
2523 | break; | |
2524 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2525 | break; | |
84b6ad70 | 2526 | |
d6f116a7 | 2527 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2528 | if (tags) { |
84b6ad70 TG |
2529 | STRV_FOREACH(t, tags) { |
2530 | _cleanup_free_ char *unescaped_filename = NULL; | |
2531 | ||
2532 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2533 | r = mkdir_p(tags_dir, 0755); | |
f647962d MS |
2534 | if (r < 0) |
2535 | return log_error_errno(r, "failed to create %s: %m", tags_dir); | |
84b6ad70 TG |
2536 | |
2537 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2538 | ||
2539 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2540 | r = symlink(device_node, tag_symlink); | |
4a62c710 MS |
2541 | if (r < 0 && errno != EEXIST) |
2542 | return log_error_errno(errno, "failed to create symlink %s -> %s: %m", | |
2543 | tag_symlink, device_node); | |
84b6ad70 TG |
2544 | } |
2545 | } | |
2546 | ||
15a72200 TG |
2547 | /* don't touch the permissions if only the tags were set */ |
2548 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2549 | break; |
2550 | ||
912541b0 KS |
2551 | if (mode == 0) { |
2552 | if (gid > 0) | |
2553 | mode = 0660; | |
2554 | else | |
2555 | mode = 0600; | |
2556 | } | |
2557 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 | 2558 | r = chmod(device_node, mode); |
25f027c5 ZJS |
2559 | if (r < 0) |
2560 | return log_error_errno(errno, "Failed to chmod '%s' %#o: %m", | |
2561 | device_node, mode); | |
2562 | else | |
9f6445e3 | 2563 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2564 | } |
2565 | ||
2566 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 | 2567 | r = chown(device_node, uid, gid); |
25f027c5 ZJS |
2568 | if (r < 0) |
2569 | return log_error_errno(errno, "Failed to chown '%s' %u %u: %m", | |
2570 | device_node, uid, gid); | |
2571 | else | |
9f6445e3 | 2572 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2573 | } |
2574 | ||
84b6ad70 | 2575 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2576 | break; |
2577 | } | |
2578 | case TK_END: | |
84b6ad70 | 2579 | goto finish; |
912541b0 KS |
2580 | } |
2581 | ||
2582 | cur++; | |
2583 | continue; | |
761dfddc | 2584 | next: |
912541b0 KS |
2585 | /* fast-forward to next rule */ |
2586 | cur = rule + rule->rule.token_count; | |
2587 | continue; | |
2588 | } | |
84b6ad70 TG |
2589 | |
2590 | finish: | |
2591 | if (f) { | |
2592 | fflush(f); | |
2593 | fchmod(fileno(f), 0644); | |
2594 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
fdd21be6 ZJS |
2595 | unlink_noerrno("/run/udev/static_node-tags"); |
2596 | unlink_noerrno(path); | |
2597 | return -errno; | |
84b6ad70 | 2598 | } |
84b6ad70 TG |
2599 | } |
2600 | ||
fdd21be6 | 2601 | return 0; |
761dfddc | 2602 | } |