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Commit | Line | Data |
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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" |
116b91e8 | 18 | #include "def.h" |
29b5eb5a | 19 | #include "device-private.h" |
480ecb7d | 20 | #include "device-util.h" |
8fb3f009 | 21 | #include "dirent-util.h" |
4f5dd394 | 22 | #include "escape.h" |
3ffd4af2 | 23 | #include "fd-util.h" |
fae0f8a0 | 24 | #include "fileio.h" |
fdd21be6 | 25 | #include "fs-util.h" |
7d50b32a | 26 | #include "glob-util.h" |
5ea78a39 YW |
27 | #include "libudev-util.h" |
28 | #include "mkdir.h" | |
b4ba2fe3 | 29 | #include "parse-util.h" |
4f5dd394 | 30 | #include "path-util.h" |
88b013b2 | 31 | #include "proc-cmdline.h" |
8fcde012 | 32 | #include "stat-util.h" |
f4850a1d | 33 | #include "stdio-util.h" |
915bf0f6 | 34 | #include "strbuf.h" |
07630cea | 35 | #include "string-util.h" |
84b6ad70 | 36 | #include "strv.h" |
5ea78a39 | 37 | #include "strxcpyx.h" |
f4cf2e5b | 38 | #include "sysctl-util.h" |
07a26e42 | 39 | #include "udev-builtin.h" |
4f5dd394 | 40 | #include "udev.h" |
b1d4f8e1 | 41 | #include "user-util.h" |
07630cea | 42 | #include "util.h" |
2232cac8 | 43 | |
a1525d17 | 44 | #define PREALLOC_TOKEN 2048 |
116b91e8 | 45 | #define RULES_DIRS (const char* const*) CONF_PATHS_STRV("udev/rules.d") |
c7521974 | 46 | |
4052400f | 47 | struct uid_gid { |
14cb109d | 48 | unsigned name_off; |
912541b0 | 49 | union { |
a1525d17 KS |
50 | uid_t uid; |
51 | gid_t gid; | |
912541b0 | 52 | }; |
4052400f KS |
53 | }; |
54 | ||
9a07157d | 55 | struct UdevRules { |
97f2d76d | 56 | usec_t dirs_ts_usec; |
c4d44cba | 57 | ResolveNameTiming resolve_name_timing; |
912541b0 KS |
58 | |
59 | /* every key in the rules file becomes a token */ | |
60 | struct token *tokens; | |
530727ae YW |
61 | size_t token_cur; |
62 | size_t token_max; | |
912541b0 | 63 | |
ab06eef8 | 64 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 65 | struct strbuf *strbuf; |
912541b0 KS |
66 | |
67 | /* during rule parsing, uid/gid lookup results are cached */ | |
68 | struct uid_gid *uids; | |
530727ae YW |
69 | size_t uids_cur; |
70 | size_t uids_max; | |
912541b0 | 71 | struct uid_gid *gids; |
530727ae YW |
72 | size_t gids_cur; |
73 | size_t gids_max; | |
4052400f KS |
74 | }; |
75 | ||
9a07157d | 76 | static char *rules_str(UdevRules *rules, unsigned off) { |
915bf0f6 KS |
77 | return rules->strbuf->buf + off; |
78 | } | |
79 | ||
9a07157d | 80 | static unsigned rules_add_string(UdevRules *rules, const char *s) { |
915bf0f6 KS |
81 | return strbuf_add_string(rules->strbuf, s, strlen(s)); |
82 | } | |
83 | ||
8e3ba377 | 84 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 85 | enum operation_type { |
912541b0 | 86 | OP_UNSET, |
b0f7409f | 87 | |
912541b0 KS |
88 | OP_MATCH, |
89 | OP_NOMATCH, | |
90 | OP_MATCH_MAX, | |
b0f7409f | 91 | |
912541b0 | 92 | OP_ADD, |
8e3ba377 | 93 | OP_REMOVE, |
912541b0 KS |
94 | OP_ASSIGN, |
95 | OP_ASSIGN_FINAL, | |
c7521974 KS |
96 | }; |
97 | ||
ac218d9c | 98 | enum string_glob_type { |
912541b0 | 99 | GL_UNSET, |
a1525d17 | 100 | GL_PLAIN, /* no special chars */ |
912541b0 | 101 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
102 | GL_SPLIT, /* multi-value A|B */ |
103 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
104 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
105 | }; |
106 | ||
32028733 | 107 | enum string_subst_type { |
912541b0 KS |
108 | SB_UNSET, |
109 | SB_NONE, | |
110 | SB_FORMAT, | |
111 | SB_SUBSYS, | |
32028733 KS |
112 | }; |
113 | ||
154a7b84 | 114 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 115 | enum token_type { |
912541b0 KS |
116 | TK_UNSET, |
117 | TK_RULE, | |
118 | ||
a1525d17 KS |
119 | TK_M_ACTION, /* val */ |
120 | TK_M_DEVPATH, /* val */ | |
121 | TK_M_KERNEL, /* val */ | |
122 | TK_M_DEVLINK, /* val */ | |
123 | TK_M_NAME, /* val */ | |
124 | TK_M_ENV, /* val, attr */ | |
125 | TK_M_TAG, /* val */ | |
126 | TK_M_SUBSYSTEM, /* val */ | |
127 | TK_M_DRIVER, /* val */ | |
128 | TK_M_WAITFOR, /* val */ | |
129 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 130 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
131 | |
132 | TK_M_PARENTS_MIN, | |
a1525d17 | 133 | TK_M_KERNELS, /* val */ |
912541b0 | 134 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
135 | TK_M_DRIVERS, /* val */ |
136 | TK_M_ATTRS, /* val, attr */ | |
137 | TK_M_TAGS, /* val */ | |
912541b0 KS |
138 | TK_M_PARENTS_MAX, |
139 | ||
a1525d17 | 140 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
141 | TK_M_PROGRAM, /* val */ |
142 | TK_M_IMPORT_FILE, /* val */ | |
143 | TK_M_IMPORT_PROG, /* val */ | |
144 | TK_M_IMPORT_BUILTIN, /* val */ | |
145 | TK_M_IMPORT_DB, /* val */ | |
146 | TK_M_IMPORT_CMDLINE, /* val */ | |
147 | TK_M_IMPORT_PARENT, /* val */ | |
148 | TK_M_RESULT, /* val */ | |
912541b0 KS |
149 | TK_M_MAX, |
150 | ||
151 | TK_A_STRING_ESCAPE_NONE, | |
152 | TK_A_STRING_ESCAPE_REPLACE, | |
153 | TK_A_DB_PERSIST, | |
a1525d17 KS |
154 | TK_A_INOTIFY_WATCH, /* int */ |
155 | TK_A_DEVLINK_PRIO, /* int */ | |
156 | TK_A_OWNER, /* val */ | |
157 | TK_A_GROUP, /* val */ | |
158 | TK_A_MODE, /* val */ | |
159 | TK_A_OWNER_ID, /* uid_t */ | |
160 | TK_A_GROUP_ID, /* gid_t */ | |
161 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 162 | TK_A_TAG, /* val */ |
a1525d17 | 163 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 164 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 165 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
166 | TK_A_NAME, /* val */ |
167 | TK_A_DEVLINK, /* val */ | |
168 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 169 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
170 | TK_A_RUN_BUILTIN, /* val, bool */ |
171 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 172 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
173 | |
174 | TK_END, | |
c7521974 KS |
175 | }; |
176 | ||
3f3aa9f5 | 177 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 178 | struct token { |
912541b0 KS |
179 | union { |
180 | unsigned char type; /* same in rule and key */ | |
181 | struct { | |
182 | enum token_type type:8; | |
183 | bool can_set_name:1; | |
184 | bool has_static_node:1; | |
14cb109d | 185 | unsigned unused:6; |
912541b0 | 186 | unsigned short token_count; |
14cb109d | 187 | unsigned label_off; |
912541b0 KS |
188 | unsigned short filename_off; |
189 | unsigned short filename_line; | |
190 | } rule; | |
191 | struct { | |
192 | enum token_type type:8; | |
193 | enum operation_type op:8; | |
194 | enum string_glob_type glob:8; | |
195 | enum string_subst_type subst:4; | |
196 | enum string_subst_type attrsubst:4; | |
14cb109d | 197 | unsigned value_off; |
912541b0 | 198 | union { |
14cb109d YW |
199 | unsigned attr_off; |
200 | unsigned rule_goto; | |
49c603bd | 201 | mode_t mode; |
912541b0 KS |
202 | uid_t uid; |
203 | gid_t gid; | |
204 | int devlink_prio; | |
912541b0 KS |
205 | int watch; |
206 | enum udev_builtin_cmd builtin_cmd; | |
207 | }; | |
208 | } key; | |
209 | }; | |
4052400f KS |
210 | }; |
211 | ||
912541b0 | 212 | #define MAX_TK 64 |
4052400f | 213 | struct rule_tmp { |
9a07157d | 214 | UdevRules *rules; |
912541b0 KS |
215 | struct token rule; |
216 | struct token token[MAX_TK]; | |
530727ae | 217 | size_t token_cur; |
4052400f KS |
218 | }; |
219 | ||
20e97dd3 | 220 | #if ENABLE_DEBUG_UDEV |
9ec6e95b | 221 | static const char *operation_str(enum operation_type type) { |
912541b0 | 222 | static const char *operation_strs[] = { |
a1525d17 KS |
223 | [OP_UNSET] = "UNSET", |
224 | [OP_MATCH] = "match", | |
225 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
226 | [OP_MATCH_MAX] = "MATCH_MAX", |
227 | ||
a1525d17 | 228 | [OP_ADD] = "add", |
8e3ba377 | 229 | [OP_REMOVE] = "remove", |
a1525d17 KS |
230 | [OP_ASSIGN] = "assign", |
231 | [OP_ASSIGN_FINAL] = "assign-final", | |
49c603bd | 232 | }; |
912541b0 KS |
233 | |
234 | return operation_strs[type]; | |
5d6a1fa6 | 235 | } |
4052400f | 236 | |
9ec6e95b | 237 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 238 | static const char *string_glob_strs[] = { |
a1525d17 KS |
239 | [GL_UNSET] = "UNSET", |
240 | [GL_PLAIN] = "plain", | |
241 | [GL_GLOB] = "glob", | |
242 | [GL_SPLIT] = "split", | |
243 | [GL_SPLIT_GLOB] = "split-glob", | |
244 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
245 | }; |
246 | ||
247 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
248 | } |
249 | ||
9ec6e95b | 250 | static const char *token_str(enum token_type type) { |
912541b0 | 251 | static const char *token_strs[] = { |
a1525d17 KS |
252 | [TK_UNSET] = "UNSET", |
253 | [TK_RULE] = "RULE", | |
912541b0 | 254 | |
a1525d17 | 255 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 256 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 257 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 258 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
259 | [TK_M_NAME] = "M NAME", |
260 | [TK_M_ENV] = "M ENV", | |
261 | [TK_M_TAG] = "M TAG", | |
262 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
263 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 264 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 265 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 266 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 267 | |
a1525d17 | 268 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 269 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 270 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 271 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
272 | [TK_M_ATTRS] = "M ATTRS", |
273 | [TK_M_TAGS] = "M TAGS", | |
274 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 275 | |
a1525d17 | 276 | [TK_M_TEST] = "M TEST", |
912541b0 | 277 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
278 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
279 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
280 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
281 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
282 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
283 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
284 | [TK_M_RESULT] = "M RESULT", | |
285 | [TK_M_MAX] = "M MAX", | |
286 | ||
287 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
288 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
289 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
290 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
291 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
292 | [TK_A_OWNER] = "A OWNER", | |
293 | [TK_A_GROUP] = "A GROUP", | |
294 | [TK_A_MODE] = "A MODE", | |
295 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
296 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
297 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 298 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 299 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
300 | [TK_A_ENV] = "A ENV", |
301 | [TK_A_TAG] = "A ENV", | |
302 | [TK_A_NAME] = "A NAME", | |
912541b0 | 303 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 304 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 305 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
306 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
307 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 308 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 309 | |
a1525d17 | 310 | [TK_END] = "END", |
912541b0 KS |
311 | }; |
312 | ||
313 | return token_strs[type]; | |
5d6a1fa6 | 314 | } |
c7521974 | 315 | |
9a07157d | 316 | static void dump_token(UdevRules *rules, struct token *token) { |
912541b0 KS |
317 | enum token_type type = token->type; |
318 | enum operation_type op = token->key.op; | |
319 | enum string_glob_type glob = token->key.glob; | |
fa394301 LR |
320 | const char *value = rules_str(rules, token->key.value_off); |
321 | const char *attr = &rules->strbuf->buf[token->key.attr_off]; | |
912541b0 KS |
322 | |
323 | switch (type) { | |
324 | case TK_RULE: | |
325 | { | |
326 | const char *tks_ptr = (char *)rules->tokens; | |
327 | const char *tk_ptr = (char *)token; | |
14cb109d | 328 | unsigned idx = (tk_ptr - tks_ptr) / sizeof(struct token); |
912541b0 | 329 | |
9f6445e3 | 330 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
fa394301 | 331 | &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line, |
baa30fbc | 332 | idx, token->rule.token_count, |
fa394301 | 333 | &rules->strbuf->buf[token->rule.label_off]); |
912541b0 KS |
334 | break; |
335 | } | |
336 | case TK_M_ACTION: | |
337 | case TK_M_DEVPATH: | |
338 | case TK_M_KERNEL: | |
339 | case TK_M_SUBSYSTEM: | |
340 | case TK_M_DRIVER: | |
341 | case TK_M_WAITFOR: | |
342 | case TK_M_DEVLINK: | |
343 | case TK_M_NAME: | |
344 | case TK_M_KERNELS: | |
345 | case TK_M_SUBSYSTEMS: | |
346 | case TK_M_DRIVERS: | |
347 | case TK_M_TAGS: | |
348 | case TK_M_PROGRAM: | |
349 | case TK_M_IMPORT_FILE: | |
350 | case TK_M_IMPORT_PROG: | |
351 | case TK_M_IMPORT_DB: | |
352 | case TK_M_IMPORT_CMDLINE: | |
353 | case TK_M_IMPORT_PARENT: | |
354 | case TK_M_RESULT: | |
355 | case TK_A_NAME: | |
356 | case TK_A_DEVLINK: | |
357 | case TK_A_OWNER: | |
358 | case TK_A_GROUP: | |
359 | case TK_A_MODE: | |
83cd6b75 KS |
360 | case TK_A_RUN_BUILTIN: |
361 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 362 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 363 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
364 | break; |
365 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 366 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
367 | break; |
368 | case TK_M_ATTR: | |
f4cf2e5b | 369 | case TK_M_SYSCTL: |
912541b0 KS |
370 | case TK_M_ATTRS: |
371 | case TK_M_ENV: | |
372 | case TK_A_ATTR: | |
f4cf2e5b | 373 | case TK_A_SYSCTL: |
912541b0 | 374 | case TK_A_ENV: |
9f6445e3 | 375 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 376 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
377 | break; |
378 | case TK_M_TAG: | |
379 | case TK_A_TAG: | |
9f6445e3 | 380 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
381 | break; |
382 | case TK_A_STRING_ESCAPE_NONE: | |
383 | case TK_A_STRING_ESCAPE_REPLACE: | |
384 | case TK_A_DB_PERSIST: | |
9f6445e3 | 385 | log_debug("%s", token_str(type)); |
912541b0 KS |
386 | break; |
387 | case TK_M_TEST: | |
9f6445e3 | 388 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 389 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
390 | break; |
391 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 392 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
393 | break; |
394 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 395 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
396 | break; |
397 | case TK_A_OWNER_ID: | |
9f6445e3 | 398 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
399 | break; |
400 | case TK_A_GROUP_ID: | |
9f6445e3 | 401 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
402 | break; |
403 | case TK_A_MODE_ID: | |
9f6445e3 | 404 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
405 | break; |
406 | case TK_A_STATIC_NODE: | |
9f6445e3 | 407 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 408 | break; |
c26547d6 | 409 | case TK_A_SECLABEL: |
9f6445e3 | 410 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 411 | break; |
912541b0 | 412 | case TK_A_GOTO: |
9f6445e3 | 413 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
414 | break; |
415 | case TK_END: | |
9f6445e3 | 416 | log_debug("* %s", token_str(type)); |
912541b0 KS |
417 | break; |
418 | case TK_M_PARENTS_MIN: | |
419 | case TK_M_PARENTS_MAX: | |
420 | case TK_M_MAX: | |
421 | case TK_UNSET: | |
8c19dc54 | 422 | log_debug("Unknown token type %u", type); |
912541b0 KS |
423 | break; |
424 | } | |
4052400f | 425 | } |
154a7b84 | 426 | |
9a07157d | 427 | static void dump_rules(UdevRules *rules) { |
530727ae | 428 | size_t i; |
912541b0 | 429 | |
530727ae | 430 | log_debug("Dumping %zu (%zu bytes) tokens, %zu (%zu bytes) strings", |
baa30fbc KS |
431 | rules->token_cur, |
432 | rules->token_cur * sizeof(struct token), | |
fa394301 LR |
433 | rules->strbuf->nodes_count, |
434 | rules->strbuf->len); | |
f168c273 | 435 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 436 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
437 | } |
438 | #else | |
a1e92eee TM |
439 | static void dump_token(UdevRules *rules, struct token *token) {} |
440 | static void dump_rules(UdevRules *rules) {} | |
20e97dd3 | 441 | #endif /* ENABLE_DEBUG_UDEV */ |
c7521974 | 442 | |
9a07157d | 443 | static int add_token(UdevRules *rules, struct token *token) { |
912541b0 | 444 | /* grow buffer if needed */ |
530727ae YW |
445 | if (!GREEDY_REALLOC(rules->tokens, rules->token_max, rules->token_cur + 1)) |
446 | return -ENOMEM; | |
447 | ||
912541b0 KS |
448 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); |
449 | rules->token_cur++; | |
450 | return 0; | |
c7521974 | 451 | } |
a27cd06c | 452 | |
b4ba2fe3 | 453 | static void log_unknown_owner(sd_device *dev, int error, const char *entity, const char *owner) { |
2da03cbf | 454 | if (IN_SET(abs(error), ENOENT, ESRCH)) |
b4ba2fe3 | 455 | log_device_error(dev, "Specified %s '%s' unknown", entity, owner); |
2da03cbf | 456 | else |
b4ba2fe3 | 457 | log_device_error_errno(dev, error, "Failed to resolve %s '%s': %m", entity, owner); |
2da03cbf ZJS |
458 | } |
459 | ||
9a07157d | 460 | static uid_t add_uid(UdevRules *rules, const char *owner) { |
23bf8dd7 | 461 | uid_t uid = 0; |
14cb109d | 462 | unsigned off; |
530727ae | 463 | size_t i; |
23bf8dd7 | 464 | int r; |
912541b0 KS |
465 | |
466 | /* lookup, if we know it already */ | |
467 | for (i = 0; i < rules->uids_cur; i++) { | |
468 | off = rules->uids[i].name_off; | |
1f362ff1 YW |
469 | if (streq(rules_str(rules, off), owner)) |
470 | return rules->uids[i].uid; | |
912541b0 | 471 | } |
fafff8f1 | 472 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
2da03cbf | 473 | if (r < 0) |
b4ba2fe3 | 474 | log_unknown_owner(NULL, r, "user", owner); |
912541b0 KS |
475 | |
476 | /* grow buffer if needed */ | |
530727ae YW |
477 | if (!GREEDY_REALLOC(rules->uids, rules->uids_max, rules->uids_cur + 1)) |
478 | return -ENOMEM; | |
479 | ||
912541b0 | 480 | rules->uids[rules->uids_cur].uid = uid; |
915bf0f6 | 481 | off = rules_add_string(rules, owner); |
912541b0 KS |
482 | if (off <= 0) |
483 | return uid; | |
484 | rules->uids[rules->uids_cur].name_off = off; | |
485 | rules->uids_cur++; | |
486 | return uid; | |
154a7b84 KS |
487 | } |
488 | ||
9a07157d | 489 | static gid_t add_gid(UdevRules *rules, const char *group) { |
23bf8dd7 | 490 | gid_t gid = 0; |
14cb109d | 491 | unsigned off; |
530727ae | 492 | size_t i; |
23bf8dd7 | 493 | int r; |
912541b0 KS |
494 | |
495 | /* lookup, if we know it already */ | |
496 | for (i = 0; i < rules->gids_cur; i++) { | |
497 | off = rules->gids[i].name_off; | |
1f362ff1 YW |
498 | if (streq(rules_str(rules, off), group)) |
499 | return rules->gids[i].gid; | |
912541b0 | 500 | } |
fafff8f1 | 501 | r = get_group_creds(&group, &gid, USER_CREDS_ALLOW_MISSING); |
2da03cbf | 502 | if (r < 0) |
b4ba2fe3 | 503 | log_unknown_owner(NULL, r, "group", group); |
912541b0 KS |
504 | |
505 | /* grow buffer if needed */ | |
530727ae YW |
506 | if (!GREEDY_REALLOC(rules->gids, rules->gids_max, rules->gids_cur + 1)) |
507 | return -ENOMEM; | |
508 | ||
912541b0 | 509 | rules->gids[rules->gids_cur].gid = gid; |
915bf0f6 | 510 | off = rules_add_string(rules, group); |
912541b0 KS |
511 | if (off <= 0) |
512 | return gid; | |
513 | rules->gids[rules->gids_cur].name_off = off; | |
514 | rules->gids_cur++; | |
515 | return gid; | |
154a7b84 KS |
516 | } |
517 | ||
29b5eb5a | 518 | static int import_property_from_string(sd_device *dev, char *line) { |
912541b0 KS |
519 | char *key; |
520 | char *val; | |
521 | size_t len; | |
522 | ||
523 | /* find key */ | |
524 | key = line; | |
525 | while (isspace(key[0])) | |
526 | key++; | |
527 | ||
528 | /* comment or empty line */ | |
4c701096 | 529 | if (IN_SET(key[0], '#', '\0')) |
29b5eb5a | 530 | return 0; |
912541b0 KS |
531 | |
532 | /* split key/value */ | |
533 | val = strchr(key, '='); | |
29b5eb5a YW |
534 | if (!val) |
535 | return -EINVAL; | |
912541b0 KS |
536 | val[0] = '\0'; |
537 | val++; | |
538 | ||
539 | /* find value */ | |
540 | while (isspace(val[0])) | |
541 | val++; | |
542 | ||
543 | /* terminate key */ | |
544 | len = strlen(key); | |
545 | if (len == 0) | |
29b5eb5a | 546 | return -EINVAL; |
912541b0 KS |
547 | while (isspace(key[len-1])) |
548 | len--; | |
549 | key[len] = '\0'; | |
550 | ||
551 | /* terminate value */ | |
552 | len = strlen(val); | |
553 | if (len == 0) | |
29b5eb5a | 554 | return -EINVAL; |
912541b0 KS |
555 | while (isspace(val[len-1])) |
556 | len--; | |
557 | val[len] = '\0'; | |
558 | ||
559 | if (len == 0) | |
29b5eb5a | 560 | return -EINVAL; |
912541b0 KS |
561 | |
562 | /* unquote */ | |
4c701096 | 563 | if (IN_SET(val[0], '"', '\'')) { |
baaa35ad ZJS |
564 | if (len == 1 || val[len-1] != val[0]) |
565 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), | |
8c19dc54 | 566 | "Inconsistent quoting: '%s', skip", |
baaa35ad | 567 | line); |
912541b0 KS |
568 | val[len-1] = '\0'; |
569 | val++; | |
570 | } | |
571 | ||
29b5eb5a | 572 | return device_add_property(dev, key, val); |
be4bedd1 KS |
573 | } |
574 | ||
13c7b75f | 575 | static int import_file_into_properties(sd_device *dev, const char *filename) { |
fae0f8a0 LP |
576 | _cleanup_fclose_ FILE *f = NULL; |
577 | int r; | |
912541b0 | 578 | |
47ef94ac | 579 | f = fopen(filename, "re"); |
fae0f8a0 LP |
580 | if (!f) |
581 | return -errno; | |
582 | ||
583 | for (;;) { | |
584 | _cleanup_free_ char *line = NULL; | |
585 | ||
586 | r = read_line(f, LONG_LINE_MAX, &line); | |
587 | if (r < 0) | |
588 | return r; | |
589 | if (r == 0) | |
590 | break; | |
591 | ||
13c7b75f | 592 | (void) import_property_from_string(dev, line); |
fae0f8a0 LP |
593 | } |
594 | ||
912541b0 | 595 | return 0; |
bd0ed2ff KS |
596 | } |
597 | ||
2e088715 | 598 | static int import_program_into_properties(UdevEvent *event, |
dd5eddd2 | 599 | usec_t timeout_usec, |
8314de1d | 600 | const char *program) { |
912541b0 KS |
601 | char result[UTIL_LINE_SIZE]; |
602 | char *line; | |
a7521142 | 603 | int r; |
912541b0 | 604 | |
3c37dadf | 605 | r = udev_event_spawn(event, timeout_usec, true, program, result, sizeof result); |
a7521142 ZJS |
606 | if (r < 0) |
607 | return r; | |
608 | if (r > 0) | |
609 | return -EIO; | |
912541b0 KS |
610 | |
611 | line = result; | |
67e4b385 | 612 | while (line) { |
912541b0 KS |
613 | char *pos; |
614 | ||
615 | pos = strchr(line, '\n'); | |
67e4b385 | 616 | if (pos) { |
912541b0 KS |
617 | pos[0] = '\0'; |
618 | pos = &pos[1]; | |
619 | } | |
cf28ad46 | 620 | (void) import_property_from_string(event->dev, line); |
912541b0 KS |
621 | line = pos; |
622 | } | |
623 | return 0; | |
319c6700 KS |
624 | } |
625 | ||
1ce7fecb YW |
626 | static int import_parent_into_properties(sd_device *dev, const char *filter) { |
627 | const char *key, *val; | |
628 | sd_device *parent; | |
629 | int r; | |
912541b0 | 630 | |
3b64e4d4 TG |
631 | assert(dev); |
632 | assert(filter); | |
633 | ||
1ce7fecb YW |
634 | r = sd_device_get_parent(dev, &parent); |
635 | if (r < 0) | |
636 | return r; | |
912541b0 | 637 | |
1ce7fecb | 638 | FOREACH_DEVICE_PROPERTY(parent, key, val) |
ece174c5 | 639 | if (fnmatch(filter, key, 0) == 0) |
1ce7fecb | 640 | device_add_property(dev, key, val); |
912541b0 | 641 | return 0; |
e2ecb34f KS |
642 | } |
643 | ||
f4850a1d ZJS |
644 | static void attr_subst_subdir(char *attr, size_t len) { |
645 | const char *pos, *tail, *path; | |
646 | _cleanup_closedir_ DIR *dir = NULL; | |
647 | struct dirent *dent; | |
648 | ||
649 | pos = strstr(attr, "/*/"); | |
650 | if (!pos) | |
651 | return; | |
652 | ||
653 | tail = pos + 2; | |
654 | path = strndupa(attr, pos - attr + 1); /* include slash at end */ | |
655 | dir = opendir(path); | |
67e4b385 | 656 | if (!dir) |
f4850a1d ZJS |
657 | return; |
658 | ||
8fb3f009 | 659 | FOREACH_DIRENT_ALL(dent, dir, break) |
f4850a1d | 660 | if (dent->d_name[0] != '.') { |
916a8d43 | 661 | char n[strlen(dent->d_name) + strlen(tail) + 1]; |
f4850a1d | 662 | |
916a8d43 ZJS |
663 | strscpyl(n, sizeof n, dent->d_name, tail, NULL); |
664 | if (faccessat(dirfd(dir), n, F_OK, 0) == 0) { | |
f4850a1d ZJS |
665 | strscpyl(attr, len, path, n, NULL); |
666 | break; | |
912541b0 | 667 | } |
912541b0 | 668 | } |
0ea5e96e KS |
669 | } |
670 | ||
2024ed61 | 671 | static int get_key(char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
672 | char *linepos; |
673 | char *temp; | |
759fb3a9 | 674 | size_t i, j; |
912541b0 KS |
675 | |
676 | linepos = *line; | |
67e4b385 | 677 | if (!linepos || linepos[0] == '\0') |
704dbfb2 | 678 | return -EINVAL; |
912541b0 KS |
679 | |
680 | /* skip whitespace */ | |
681 | while (isspace(linepos[0]) || linepos[0] == ',') | |
682 | linepos++; | |
683 | ||
684 | /* get the key */ | |
685 | if (linepos[0] == '\0') | |
704dbfb2 | 686 | return -EINVAL; |
912541b0 KS |
687 | *key = linepos; |
688 | ||
689 | for (;;) { | |
690 | linepos++; | |
691 | if (linepos[0] == '\0') | |
704dbfb2 | 692 | return -EINVAL; |
912541b0 KS |
693 | if (isspace(linepos[0])) |
694 | break; | |
695 | if (linepos[0] == '=') | |
696 | break; | |
4c701096 | 697 | if (IN_SET(linepos[0], '+', '-', '!', ':')) |
912541b0 KS |
698 | if (linepos[1] == '=') |
699 | break; | |
700 | } | |
701 | ||
702 | /* remember end of key */ | |
703 | temp = linepos; | |
704 | ||
705 | /* skip whitespace after key */ | |
706 | while (isspace(linepos[0])) | |
707 | linepos++; | |
708 | if (linepos[0] == '\0') | |
704dbfb2 | 709 | return -EINVAL; |
912541b0 KS |
710 | |
711 | /* get operation type */ | |
712 | if (linepos[0] == '=' && linepos[1] == '=') { | |
713 | *op = OP_MATCH; | |
714 | linepos += 2; | |
715 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
716 | *op = OP_NOMATCH; | |
717 | linepos += 2; | |
718 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
719 | *op = OP_ADD; | |
720 | linepos += 2; | |
8e3ba377 DH |
721 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
722 | *op = OP_REMOVE; | |
723 | linepos += 2; | |
912541b0 KS |
724 | } else if (linepos[0] == '=') { |
725 | *op = OP_ASSIGN; | |
726 | linepos++; | |
727 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
728 | *op = OP_ASSIGN_FINAL; | |
729 | linepos += 2; | |
730 | } else | |
704dbfb2 | 731 | return -EINVAL; |
912541b0 KS |
732 | |
733 | /* terminate key */ | |
734 | temp[0] = '\0'; | |
735 | ||
736 | /* skip whitespace after operator */ | |
737 | while (isspace(linepos[0])) | |
738 | linepos++; | |
739 | if (linepos[0] == '\0') | |
704dbfb2 | 740 | return -EINVAL; |
912541b0 KS |
741 | |
742 | /* get the value */ | |
743 | if (linepos[0] == '"') | |
744 | linepos++; | |
745 | else | |
704dbfb2 | 746 | return -EINVAL; |
912541b0 KS |
747 | *value = linepos; |
748 | ||
749 | /* terminate */ | |
7e760b79 FB |
750 | for (i = 0, j = 0; ; i++, j++) { |
751 | ||
752 | if (linepos[i] == '"') | |
753 | break; | |
754 | ||
755 | if (linepos[i] == '\0') | |
704dbfb2 | 756 | return -EINVAL; |
7e760b79 FB |
757 | |
758 | /* double quotes can be escaped */ | |
759 | if (linepos[i] == '\\') | |
760 | if (linepos[i+1] == '"') | |
761 | i++; | |
762 | ||
763 | linepos[j] = linepos[i]; | |
764 | } | |
765 | linepos[j] = '\0'; | |
912541b0 KS |
766 | |
767 | /* move line to next key */ | |
7e760b79 | 768 | *line = linepos + i + 1; |
912541b0 | 769 | return 0; |
6880b25d | 770 | } |
95776dc6 | 771 | |
6880b25d | 772 | /* extract possible KEY{attr} */ |
2024ed61 | 773 | static const char *get_key_attribute(char *str) { |
912541b0 KS |
774 | char *pos; |
775 | char *attr; | |
776 | ||
777 | attr = strchr(str, '{'); | |
67e4b385 | 778 | if (attr) { |
912541b0 KS |
779 | attr++; |
780 | pos = strchr(attr, '}'); | |
67e4b385 | 781 | if (!pos) { |
25f027c5 | 782 | log_error("Missing closing brace for format"); |
912541b0 KS |
783 | return NULL; |
784 | } | |
785 | pos[0] = '\0'; | |
912541b0 KS |
786 | return attr; |
787 | } | |
788 | return NULL; | |
6880b25d | 789 | } |
95776dc6 | 790 | |
6e2efb6c YW |
791 | static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
792 | enum operation_type op, | |
793 | const char *value, const void *data) { | |
19a8e656 | 794 | struct token *token = rule_tmp->token + rule_tmp->token_cur; |
912541b0 KS |
795 | const char *attr = NULL; |
796 | ||
6e2efb6c YW |
797 | if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token)) |
798 | return -E2BIG; | |
799 | ||
29804cc1 | 800 | memzero(token, sizeof(struct token)); |
912541b0 KS |
801 | |
802 | switch (type) { | |
803 | case TK_M_ACTION: | |
804 | case TK_M_DEVPATH: | |
805 | case TK_M_KERNEL: | |
806 | case TK_M_SUBSYSTEM: | |
807 | case TK_M_DRIVER: | |
808 | case TK_M_WAITFOR: | |
809 | case TK_M_DEVLINK: | |
810 | case TK_M_NAME: | |
811 | case TK_M_KERNELS: | |
812 | case TK_M_SUBSYSTEMS: | |
813 | case TK_M_DRIVERS: | |
814 | case TK_M_TAGS: | |
815 | case TK_M_PROGRAM: | |
816 | case TK_M_IMPORT_FILE: | |
817 | case TK_M_IMPORT_PROG: | |
818 | case TK_M_IMPORT_DB: | |
819 | case TK_M_IMPORT_CMDLINE: | |
820 | case TK_M_IMPORT_PARENT: | |
821 | case TK_M_RESULT: | |
822 | case TK_A_OWNER: | |
823 | case TK_A_GROUP: | |
824 | case TK_A_MODE: | |
8a173387 | 825 | case TK_A_DEVLINK: |
912541b0 KS |
826 | case TK_A_NAME: |
827 | case TK_A_GOTO: | |
828 | case TK_M_TAG: | |
829 | case TK_A_TAG: | |
d6f116a7 | 830 | case TK_A_STATIC_NODE: |
915bf0f6 | 831 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
832 | break; |
833 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 834 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
835 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
836 | break; | |
837 | case TK_M_ENV: | |
838 | case TK_M_ATTR: | |
f4cf2e5b | 839 | case TK_M_SYSCTL: |
912541b0 KS |
840 | case TK_M_ATTRS: |
841 | case TK_A_ATTR: | |
f4cf2e5b | 842 | case TK_A_SYSCTL: |
912541b0 | 843 | case TK_A_ENV: |
c26547d6 | 844 | case TK_A_SECLABEL: |
912541b0 | 845 | attr = data; |
915bf0f6 KS |
846 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
847 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 848 | break; |
912541b0 | 849 | case TK_M_TEST: |
915bf0f6 | 850 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
67e4b385 | 851 | if (data) |
912541b0 KS |
852 | token->key.mode = *(mode_t *)data; |
853 | break; | |
854 | case TK_A_STRING_ESCAPE_NONE: | |
855 | case TK_A_STRING_ESCAPE_REPLACE: | |
856 | case TK_A_DB_PERSIST: | |
857 | break; | |
83cd6b75 | 858 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 859 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 860 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 861 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
862 | break; |
863 | case TK_A_INOTIFY_WATCH: | |
864 | case TK_A_DEVLINK_PRIO: | |
865 | token->key.devlink_prio = *(int *)data; | |
866 | break; | |
867 | case TK_A_OWNER_ID: | |
868 | token->key.uid = *(uid_t *)data; | |
869 | break; | |
870 | case TK_A_GROUP_ID: | |
871 | token->key.gid = *(gid_t *)data; | |
872 | break; | |
873 | case TK_A_MODE_ID: | |
874 | token->key.mode = *(mode_t *)data; | |
875 | break; | |
912541b0 KS |
876 | case TK_RULE: |
877 | case TK_M_PARENTS_MIN: | |
878 | case TK_M_PARENTS_MAX: | |
879 | case TK_M_MAX: | |
880 | case TK_END: | |
881 | case TK_UNSET: | |
19a8e656 | 882 | assert_not_reached("wrong type"); |
912541b0 KS |
883 | } |
884 | ||
67e4b385 | 885 | if (value && type < TK_M_MAX) { |
912541b0 KS |
886 | /* check if we need to split or call fnmatch() while matching rules */ |
887 | enum string_glob_type glob; | |
67e4b385 | 888 | bool has_split, has_glob; |
912541b0 | 889 | |
67e4b385 | 890 | has_split = strchr(value, '|'); |
e3e0314b | 891 | has_glob = string_is_glob(value); |
67e4b385 | 892 | if (has_split && has_glob) |
912541b0 | 893 | glob = GL_SPLIT_GLOB; |
67e4b385 | 894 | else if (has_split) |
912541b0 | 895 | glob = GL_SPLIT; |
67e4b385 | 896 | else if (has_glob) { |
33502ffe | 897 | if (streq(value, "?*")) |
912541b0 KS |
898 | glob = GL_SOMETHING; |
899 | else | |
900 | glob = GL_GLOB; | |
67e4b385 | 901 | } else |
912541b0 | 902 | glob = GL_PLAIN; |
67e4b385 | 903 | |
912541b0 KS |
904 | token->key.glob = glob; |
905 | } | |
906 | ||
67e4b385 | 907 | if (value && type > TK_M_MAX) { |
912541b0 KS |
908 | /* check if assigned value has substitution chars */ |
909 | if (value[0] == '[') | |
910 | token->key.subst = SB_SUBSYS; | |
67e4b385 | 911 | else if (strchr(value, '%') || strchr(value, '$')) |
912541b0 KS |
912 | token->key.subst = SB_FORMAT; |
913 | else | |
914 | token->key.subst = SB_NONE; | |
915 | } | |
916 | ||
67e4b385 | 917 | if (attr) { |
d6f116a7 | 918 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
919 | if (attr[0] == '[') |
920 | token->key.attrsubst = SB_SUBSYS; | |
67e4b385 | 921 | else if (strchr(attr, '%') || strchr(attr, '$')) |
912541b0 KS |
922 | token->key.attrsubst = SB_FORMAT; |
923 | else | |
924 | token->key.attrsubst = SB_NONE; | |
925 | } | |
926 | ||
927 | token->key.type = type; | |
928 | token->key.op = op; | |
929 | rule_tmp->token_cur++; | |
6e2efb6c YW |
930 | |
931 | return 0; | |
6880b25d | 932 | } |
e57e7bc1 | 933 | |
9a07157d | 934 | static int sort_token(UdevRules *rules, struct rule_tmp *rule_tmp) { |
530727ae YW |
935 | size_t i; |
936 | size_t start = 0; | |
937 | size_t end = rule_tmp->token_cur; | |
ef660d07 | 938 | int r; |
912541b0 KS |
939 | |
940 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
941 | enum token_type next_val = TK_UNSET; | |
530727ae YW |
942 | size_t next_idx = 0; |
943 | size_t j; | |
912541b0 KS |
944 | |
945 | /* find smallest value */ | |
946 | for (j = start; j < end; j++) { | |
947 | if (rule_tmp->token[j].type == TK_UNSET) | |
948 | continue; | |
949 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
950 | next_val = rule_tmp->token[j].type; | |
951 | next_idx = j; | |
952 | } | |
953 | } | |
954 | ||
955 | /* add token and mark done */ | |
ef660d07 YW |
956 | r = add_token(rules, &rule_tmp->token[next_idx]); |
957 | if (r < 0) | |
958 | return r; | |
912541b0 KS |
959 | rule_tmp->token[next_idx].type = TK_UNSET; |
960 | ||
961 | /* shrink range */ | |
962 | if (next_idx == start) | |
963 | start++; | |
964 | if (next_idx+1 == end) | |
965 | end--; | |
966 | } | |
967 | return 0; | |
724257d9 GKH |
968 | } |
969 | ||
8c19dc54 YW |
970 | #define LOG_RULE_FULL(level, fmt, ...) log_full(level, "%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) |
971 | #define LOG_RULE_ERROR(fmt, ...) LOG_RULE_FULL(LOG_ERR, fmt, ##__VA_ARGS__) | |
972 | #define LOG_RULE_WARNING(fmt, ...) LOG_RULE_FULL(LOG_WARNING, fmt, ##__VA_ARGS__) | |
973 | #define LOG_RULE_DEBUG(fmt, ...) LOG_RULE_FULL(LOG_DEBUG, fmt, ##__VA_ARGS__) | |
19a8e656 | 974 | #define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; } |
530727ae | 975 | #define LOG_AND_RETURN_ADD_KEY LOG_AND_RETURN("Temporary rule array too small, aborting event processing with %zu items", rule_tmp.token_cur); |
19a8e656 | 976 | |
9a07157d | 977 | static void add_rule(UdevRules *rules, char *line, |
14cb109d | 978 | const char *filename, unsigned filename_off, unsigned lineno) { |
912541b0 | 979 | char *linepos; |
04a9d3a0 | 980 | const char *attr; |
84198c18 TG |
981 | struct rule_tmp rule_tmp = { |
982 | .rules = rules, | |
983 | .rule.type = TK_RULE, | |
984 | }; | |
6e2efb6c | 985 | int r; |
912541b0 | 986 | |
775f8b3c KS |
987 | /* the offset in the rule is limited to unsigned short */ |
988 | if (filename_off < USHRT_MAX) | |
989 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
990 | rule_tmp.rule.rule.filename_line = lineno; |
991 | ||
992 | linepos = line; | |
993 | for (;;) { | |
994 | char *key; | |
995 | char *value; | |
996 | enum operation_type op; | |
997 | ||
704dbfb2 | 998 | if (get_key(&linepos, &key, &op, &value) < 0) { |
3cf0f8f7 DR |
999 | /* Avoid erroring on trailing whitespace. This is probably rare |
1000 | * so save the work for the error case instead of always trying | |
1001 | * to strip the trailing whitespace with strstrip(). */ | |
1002 | while (isblank(*linepos)) | |
1003 | linepos++; | |
1004 | ||
e736cf35 DR |
1005 | /* If we aren't at the end of the line, this is a parsing error. |
1006 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1007 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1008 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1009 | _cleanup_free_ char *tmp; |
1010 | ||
1011 | tmp = cescape(buf); | |
8c19dc54 | 1012 | LOG_RULE_ERROR("Invalid key/value pair, starting at character %tu ('%s')", linepos - line + 1, tmp); |
6501b52d | 1013 | if (*linepos == '#') |
8c19dc54 | 1014 | LOG_RULE_ERROR("Hint: comments can only start at beginning of line"); |
1291bc89 | 1015 | } |
912541b0 | 1016 | break; |
e736cf35 | 1017 | } |
912541b0 | 1018 | |
33502ffe | 1019 | if (streq(key, "ACTION")) { |
19a8e656 | 1020 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1021 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1022 | |
6e2efb6c YW |
1023 | if (rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL) < 0) |
1024 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1025 | |
99f16bb8 | 1026 | } else if (streq(key, "DEVPATH")) { |
19a8e656 | 1027 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1028 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1029 | |
6e2efb6c YW |
1030 | if (rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL) < 0) |
1031 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1032 | |
99f16bb8 | 1033 | } else if (streq(key, "KERNEL")) { |
19a8e656 | 1034 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1035 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1036 | |
6e2efb6c YW |
1037 | if (rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL) < 0) |
1038 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1039 | |
99f16bb8 | 1040 | } else if (streq(key, "SUBSYSTEM")) { |
19a8e656 | 1041 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1042 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1043 | |
912541b0 | 1044 | /* bus, class, subsystem events should all be the same */ |
99f16bb8 ZJS |
1045 | if (STR_IN_SET(value, "subsystem", "bus", "class")) { |
1046 | if (!streq(value, "subsystem")) | |
19a8e656 ZJS |
1047 | LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value); |
1048 | ||
6e2efb6c | 1049 | r = rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
912541b0 | 1050 | } else |
6e2efb6c YW |
1051 | r = rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); |
1052 | if (r < 0) | |
1053 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1054 | |
99f16bb8 | 1055 | } else if (streq(key, "DRIVER")) { |
19a8e656 | 1056 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1057 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1058 | |
6e2efb6c YW |
1059 | if (rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL) < 0) |
1060 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1061 | |
99f16bb8 | 1062 | } else if (startswith(key, "ATTR{")) { |
2024ed61 | 1063 | attr = get_key_attribute(key + STRLEN("ATTR")); |
67e4b385 | 1064 | if (!attr) |
8c19dc54 | 1065 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTR"); |
19a8e656 ZJS |
1066 | |
1067 | if (op == OP_REMOVE) | |
8c19dc54 | 1068 | LOG_AND_RETURN("Invalid %s operation", "ATTR"); |
19a8e656 | 1069 | |
f4cf2e5b | 1070 | if (op < OP_MATCH_MAX) |
6e2efb6c | 1071 | r = rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1072 | else |
6e2efb6c YW |
1073 | r = rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
1074 | if (r < 0) | |
1075 | LOG_AND_RETURN_ADD_KEY; | |
f4cf2e5b | 1076 | |
99f16bb8 | 1077 | } else if (startswith(key, "SYSCTL{")) { |
2024ed61 | 1078 | attr = get_key_attribute(key + STRLEN("SYSCTL")); |
67e4b385 | 1079 | if (!attr) |
8c19dc54 | 1080 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTR"); |
19a8e656 ZJS |
1081 | |
1082 | if (op == OP_REMOVE) | |
8c19dc54 | 1083 | LOG_AND_RETURN("Invalid %s operation", "ATTR"); |
19a8e656 | 1084 | |
f4cf2e5b | 1085 | if (op < OP_MATCH_MAX) |
6e2efb6c | 1086 | r = rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); |
f4cf2e5b | 1087 | else |
6e2efb6c YW |
1088 | r = rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); |
1089 | if (r < 0) | |
1090 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1091 | |
99f16bb8 | 1092 | } else if (startswith(key, "SECLABEL{")) { |
2024ed61 | 1093 | attr = get_key_attribute(key + STRLEN("SECLABEL")); |
67e4b385 | 1094 | if (!attr) |
8c19dc54 | 1095 | LOG_AND_RETURN("Failed to parse %s attribute", "SECLABEL"); |
19a8e656 ZJS |
1096 | |
1097 | if (op == OP_REMOVE) | |
8c19dc54 | 1098 | LOG_AND_RETURN("Invalid %s operation", "SECLABEL"); |
c26547d6 | 1099 | |
6e2efb6c YW |
1100 | if (rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr) < 0) |
1101 | LOG_AND_RETURN_ADD_KEY; | |
c26547d6 | 1102 | |
99f16bb8 | 1103 | } else if (streq(key, "KERNELS")) { |
19a8e656 | 1104 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1105 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1106 | |
6e2efb6c YW |
1107 | if (rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL) < 0) |
1108 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1109 | |
99f16bb8 | 1110 | } else if (streq(key, "SUBSYSTEMS")) { |
19a8e656 | 1111 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1112 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1113 | |
6e2efb6c YW |
1114 | if (rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL) < 0) |
1115 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1116 | |
99f16bb8 | 1117 | } else if (streq(key, "DRIVERS")) { |
19a8e656 | 1118 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1119 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1120 | |
6e2efb6c YW |
1121 | if (rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL) < 0) |
1122 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1123 | |
99f16bb8 | 1124 | } else if (startswith(key, "ATTRS{")) { |
19a8e656 | 1125 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1126 | LOG_AND_RETURN("Invalid %s operation", "ATTRS"); |
19a8e656 | 1127 | |
2024ed61 | 1128 | attr = get_key_attribute(key + STRLEN("ATTRS")); |
67e4b385 | 1129 | if (!attr) |
8c19dc54 | 1130 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTRS"); |
19a8e656 | 1131 | |
33502ffe | 1132 | if (startswith(attr, "device/")) |
19a8e656 | 1133 | LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix"); |
67e4b385 | 1134 | if (strstr(attr, "../")) |
8c19dc54 | 1135 | LOG_RULE_WARNING("Direct reference to parent sysfs directory, may break in future kernels; please fix"); |
6e2efb6c YW |
1136 | if (rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr) < 0) |
1137 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1138 | |
99f16bb8 | 1139 | } else if (streq(key, "TAGS")) { |
19a8e656 | 1140 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1141 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1142 | |
6e2efb6c YW |
1143 | if (rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL) < 0) |
1144 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1145 | |
99f16bb8 | 1146 | } else if (startswith(key, "ENV{")) { |
2024ed61 | 1147 | attr = get_key_attribute(key + STRLEN("ENV")); |
67e4b385 | 1148 | if (!attr) |
8c19dc54 | 1149 | LOG_AND_RETURN("Failed to parse %s attribute", "ENV"); |
19a8e656 ZJS |
1150 | |
1151 | if (op == OP_REMOVE) | |
8c19dc54 | 1152 | LOG_AND_RETURN("Invalid %s operation", "ENV"); |
19a8e656 ZJS |
1153 | |
1154 | if (op < OP_MATCH_MAX) | |
6e2efb6c | 1155 | r = rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr); |
19a8e656 | 1156 | else { |
99f16bb8 ZJS |
1157 | if (STR_IN_SET(attr, |
1158 | "ACTION", | |
1159 | "SUBSYSTEM", | |
1160 | "DEVTYPE", | |
1161 | "MAJOR", | |
1162 | "MINOR", | |
1163 | "DRIVER", | |
1164 | "IFINDEX", | |
1165 | "DEVNAME", | |
1166 | "DEVLINKS", | |
1167 | "DEVPATH", | |
19a8e656 | 1168 | "TAGS")) |
8c19dc54 | 1169 | LOG_AND_RETURN("Invalid ENV attribute, '%s' cannot be set", attr); |
19a8e656 | 1170 | |
6e2efb6c | 1171 | r = rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr); |
912541b0 | 1172 | } |
6e2efb6c YW |
1173 | if (r < 0) |
1174 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1175 | |
99f16bb8 | 1176 | } else if (streq(key, "TAG")) { |
912541b0 | 1177 | if (op < OP_MATCH_MAX) |
6e2efb6c | 1178 | r = rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); |
912541b0 | 1179 | else |
6e2efb6c YW |
1180 | r = rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); |
1181 | if (r < 0) | |
1182 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1183 | |
99f16bb8 | 1184 | } else if (streq(key, "PROGRAM")) { |
19a8e656 | 1185 | if (op == OP_REMOVE) |
8c19dc54 | 1186 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1187 | |
6e2efb6c YW |
1188 | if (rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL) < 0) |
1189 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1190 | |
99f16bb8 | 1191 | } else if (streq(key, "RESULT")) { |
19a8e656 | 1192 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1193 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1194 | |
6e2efb6c YW |
1195 | if (rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL) < 0) |
1196 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1197 | |
99f16bb8 | 1198 | } else if (startswith(key, "IMPORT")) { |
2024ed61 | 1199 | attr = get_key_attribute(key + STRLEN("IMPORT")); |
67e4b385 | 1200 | if (!attr) { |
8c19dc54 | 1201 | LOG_RULE_WARNING("Ignoring IMPORT{} with missing type"); |
912541b0 KS |
1202 | continue; |
1203 | } | |
19a8e656 | 1204 | if (op == OP_REMOVE) |
8c19dc54 | 1205 | LOG_AND_RETURN("Invalid %s operation", "IMPORT"); |
19a8e656 | 1206 | |
33502ffe | 1207 | if (streq(attr, "program")) { |
912541b0 KS |
1208 | /* find known built-in command */ |
1209 | if (value[0] != '/') { | |
19a8e656 | 1210 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1211 | |
c45b369d | 1212 | if (cmd >= 0) { |
19a8e656 | 1213 | LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value); |
6e2efb6c YW |
1214 | if (rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd) < 0) |
1215 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1216 | continue; |
1217 | } | |
1218 | } | |
6e2efb6c | 1219 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1220 | } else if (streq(attr, "builtin")) { |
19a8e656 | 1221 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1222 | |
6e2efb6c YW |
1223 | if (cmd < 0) { |
1224 | LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown, ignoring", value); | |
1225 | continue; | |
1226 | } else | |
1227 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); | |
19a8e656 | 1228 | } else if (streq(attr, "file")) |
6e2efb6c | 1229 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
19a8e656 | 1230 | else if (streq(attr, "db")) |
6e2efb6c | 1231 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
19a8e656 | 1232 | else if (streq(attr, "cmdline")) |
6e2efb6c | 1233 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
19a8e656 | 1234 | else if (streq(attr, "parent")) |
6e2efb6c YW |
1235 | r = rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
1236 | else { | |
8c19dc54 | 1237 | LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "IMPORT", attr); |
6e2efb6c YW |
1238 | continue; |
1239 | } | |
1240 | if (r < 0) | |
1241 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1242 | |
99f16bb8 | 1243 | } else if (startswith(key, "TEST")) { |
912541b0 KS |
1244 | mode_t mode = 0; |
1245 | ||
19a8e656 | 1246 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1247 | LOG_AND_RETURN("Invalid %s operation", "TEST"); |
19a8e656 | 1248 | |
2024ed61 | 1249 | attr = get_key_attribute(key + STRLEN("TEST")); |
67e4b385 | 1250 | if (attr) { |
912541b0 | 1251 | mode = strtol(attr, NULL, 8); |
6e2efb6c | 1252 | r = rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); |
99f16bb8 | 1253 | } else |
6e2efb6c YW |
1254 | r = rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); |
1255 | if (r < 0) | |
1256 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1257 | |
99f16bb8 | 1258 | } else if (startswith(key, "RUN")) { |
2024ed61 | 1259 | attr = get_key_attribute(key + STRLEN("RUN")); |
67e4b385 | 1260 | if (!attr) |
83cd6b75 | 1261 | attr = "program"; |
19a8e656 | 1262 | if (op == OP_REMOVE) |
8c19dc54 | 1263 | LOG_AND_RETURN("Invalid %s operation", "RUN"); |
83cd6b75 | 1264 | |
33502ffe | 1265 | if (streq(attr, "builtin")) { |
19a8e656 | 1266 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
83cd6b75 | 1267 | |
6e2efb6c YW |
1268 | if (cmd < 0) { |
1269 | LOG_RULE_ERROR("RUN{builtin}: '%s' unknown, ignoring", value); | |
1270 | continue; | |
1271 | } else | |
1272 | r = rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
33502ffe | 1273 | } else if (streq(attr, "program")) { |
c45b369d | 1274 | const enum udev_builtin_cmd cmd = _UDEV_BUILTIN_MAX; |
83cd6b75 | 1275 | |
6e2efb6c YW |
1276 | r = rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
1277 | } else { | |
8c19dc54 | 1278 | LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "RUN", attr); |
6e2efb6c YW |
1279 | continue; |
1280 | } | |
1281 | if (r < 0) | |
1282 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1283 | |
99f16bb8 | 1284 | } else if (streq(key, "LABEL")) { |
19a8e656 | 1285 | if (op == OP_REMOVE) |
8c19dc54 | 1286 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1287 | |
915bf0f6 | 1288 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 | 1289 | |
99f16bb8 | 1290 | } else if (streq(key, "GOTO")) { |
19a8e656 | 1291 | if (op == OP_REMOVE) |
8c19dc54 | 1292 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1293 | |
6e2efb6c YW |
1294 | if (rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL) < 0) |
1295 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1296 | |
99f16bb8 | 1297 | } else if (startswith(key, "NAME")) { |
19a8e656 | 1298 | if (op == OP_REMOVE) |
8c19dc54 | 1299 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 ZJS |
1300 | |
1301 | if (op < OP_MATCH_MAX) | |
6e2efb6c | 1302 | r = rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); |
19a8e656 | 1303 | else { |
33502ffe | 1304 | if (streq(value, "%k")) { |
19a8e656 | 1305 | LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove"); |
912541b0 KS |
1306 | continue; |
1307 | } | |
19a8e656 ZJS |
1308 | if (isempty(value)) { |
1309 | LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove"); | |
912541b0 KS |
1310 | continue; |
1311 | } | |
6e2efb6c | 1312 | r = rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); |
912541b0 | 1313 | } |
6e2efb6c YW |
1314 | if (r < 0) |
1315 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1316 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1317 | |
99f16bb8 | 1318 | } else if (streq(key, "SYMLINK")) { |
19a8e656 | 1319 | if (op == OP_REMOVE) |
8c19dc54 | 1320 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1321 | |
8a173387 | 1322 | if (op < OP_MATCH_MAX) |
6e2efb6c | 1323 | r = rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 | 1324 | else |
6e2efb6c YW |
1325 | r = rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); |
1326 | if (r < 0) | |
1327 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 | 1328 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1329 | |
99f16bb8 | 1330 | } else if (streq(key, "OWNER")) { |
912541b0 | 1331 | uid_t uid; |
912541b0 | 1332 | |
19a8e656 | 1333 | if (op == OP_REMOVE) |
8c19dc54 | 1334 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1335 | |
72ca8f71 | 1336 | if (parse_uid(value, &uid) >= 0) |
6e2efb6c | 1337 | r = rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
67e4b385 | 1338 | else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY && !strchr("$%", value[0])) { |
912541b0 | 1339 | uid = add_uid(rules, value); |
6e2efb6c | 1340 | r = rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
c4d44cba | 1341 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
6e2efb6c YW |
1342 | r = rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1343 | else { | |
57f08d5c | 1344 | LOG_RULE_DEBUG("Resolving user name is disabled, ignoring %s=%s", key, value); |
6e2efb6c YW |
1345 | continue; |
1346 | } | |
1347 | if (r < 0) | |
1348 | LOG_AND_RETURN_ADD_KEY; | |
1f6b4113 | 1349 | |
912541b0 | 1350 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1351 | |
99f16bb8 | 1352 | } else if (streq(key, "GROUP")) { |
912541b0 | 1353 | gid_t gid; |
912541b0 | 1354 | |
19a8e656 | 1355 | if (op == OP_REMOVE) |
8c19dc54 | 1356 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1357 | |
72ca8f71 | 1358 | if (parse_gid(value, &gid) >= 0) |
6e2efb6c | 1359 | r = rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
67e4b385 | 1360 | else if ((rules->resolve_name_timing == RESOLVE_NAME_EARLY) && !strchr("$%", value[0])) { |
912541b0 | 1361 | gid = add_gid(rules, value); |
6e2efb6c | 1362 | r = rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
c4d44cba | 1363 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
6e2efb6c YW |
1364 | r = rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1365 | else { | |
57f08d5c | 1366 | LOG_RULE_DEBUG("Resolving group name is disabled, ignoring %s=%s", key, value); |
6e2efb6c YW |
1367 | continue; |
1368 | } | |
1369 | if (r < 0) | |
1370 | LOG_AND_RETURN_ADD_KEY; | |
1f6b4113 | 1371 | |
912541b0 | 1372 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1373 | |
99f16bb8 | 1374 | } else if (streq(key, "MODE")) { |
912541b0 KS |
1375 | mode_t mode; |
1376 | char *endptr; | |
1377 | ||
19a8e656 | 1378 | if (op == OP_REMOVE) |
8c19dc54 | 1379 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1380 | |
912541b0 KS |
1381 | mode = strtol(value, &endptr, 8); |
1382 | if (endptr[0] == '\0') | |
6e2efb6c | 1383 | r = rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); |
912541b0 | 1384 | else |
6e2efb6c YW |
1385 | r = rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); |
1386 | if (r < 0) | |
1387 | LOG_AND_RETURN_ADD_KEY; | |
1388 | ||
912541b0 | 1389 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1390 | |
99f16bb8 | 1391 | } else if (streq(key, "OPTIONS")) { |
912541b0 KS |
1392 | const char *pos; |
1393 | ||
19a8e656 | 1394 | if (op == OP_REMOVE) |
8c19dc54 | 1395 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1396 | |
912541b0 | 1397 | pos = strstr(value, "link_priority="); |
67e4b385 | 1398 | if (pos) { |
fbd0b64f | 1399 | int prio = atoi(pos + STRLEN("link_priority=")); |
912541b0 | 1400 | |
6e2efb6c YW |
1401 | if (rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio) < 0) |
1402 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1403 | } |
1404 | ||
9f20a8a3 | 1405 | pos = strstr(value, "string_escape="); |
67e4b385 | 1406 | if (pos) { |
fbd0b64f | 1407 | pos += STRLEN("string_escape="); |
33502ffe | 1408 | if (startswith(pos, "none")) |
6e2efb6c | 1409 | r = rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1410 | else if (startswith(pos, "replace")) |
6e2efb6c YW |
1411 | r = rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1412 | else { | |
1413 | LOG_RULE_ERROR("OPTIONS: unknown string_escape mode '%s', ignoring", pos); | |
1414 | r = 0; | |
1415 | } | |
1416 | if (r < 0) | |
1417 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1418 | } |
1419 | ||
1420 | pos = strstr(value, "db_persist"); | |
67e4b385 | 1421 | if (pos) |
6e2efb6c YW |
1422 | if (rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL) < 0) |
1423 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1424 | |
1425 | pos = strstr(value, "nowatch"); | |
b33fa02b LP |
1426 | if (pos) { |
1427 | static const int zero = 0; | |
6e2efb6c YW |
1428 | if (rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &zero) < 0) |
1429 | LOG_AND_RETURN_ADD_KEY; | |
b33fa02b LP |
1430 | } else { |
1431 | static const int one = 1; | |
912541b0 | 1432 | pos = strstr(value, "watch"); |
6d5e65f6 | 1433 | if (pos) |
6e2efb6c YW |
1434 | if (rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &one) < 0) |
1435 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1436 | } |
1437 | ||
1438 | pos = strstr(value, "static_node="); | |
67e4b385 | 1439 | if (pos) { |
fbd0b64f | 1440 | pos += STRLEN("static_node="); |
6e2efb6c YW |
1441 | if (rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL) < 0) |
1442 | LOG_AND_RETURN_ADD_KEY; | |
912541b0 KS |
1443 | rule_tmp.rule.rule.has_static_node = true; |
1444 | } | |
1445 | ||
19a8e656 | 1446 | } else |
8c19dc54 | 1447 | LOG_AND_RETURN("Unknown key '%s'", key); |
912541b0 KS |
1448 | } |
1449 | ||
19a8e656 | 1450 | /* add rule token and sort tokens */ |
912541b0 | 1451 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; |
ef660d07 | 1452 | if (add_token(rules, &rule_tmp.rule) < 0 || sort_token(rules, &rule_tmp) < 0) |
8c19dc54 | 1453 | LOG_RULE_ERROR("Failed to add rule token"); |
c7521974 KS |
1454 | } |
1455 | ||
9a07157d | 1456 | static int parse_file(UdevRules *rules, const char *filename) { |
f10aa08e | 1457 | _cleanup_free_ char *continuation = NULL; |
6c8aaf0c | 1458 | _cleanup_fclose_ FILE *f = NULL; |
f10aa08e | 1459 | bool ignore_line = false; |
530727ae | 1460 | size_t first_token, i; |
14cb109d | 1461 | unsigned filename_off; |
f10aa08e | 1462 | int line_nr = 0, r; |
912541b0 | 1463 | |
ed88bcfb ZJS |
1464 | f = fopen(filename, "re"); |
1465 | if (!f) { | |
1466 | if (errno == ENOENT) | |
1467 | return 0; | |
fae0f8a0 LP |
1468 | |
1469 | return -errno; | |
775f8b3c | 1470 | } |
912541b0 | 1471 | |
ed88bcfb ZJS |
1472 | if (null_or_empty_fd(fileno(f))) { |
1473 | log_debug("Skipping empty file: %s", filename); | |
1474 | return 0; | |
1475 | } else | |
1476 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1477 | |
1478 | first_token = rules->token_cur; | |
915bf0f6 | 1479 | filename_off = rules_add_string(rules, filename); |
912541b0 | 1480 | |
f10aa08e YW |
1481 | for (;;) { |
1482 | _cleanup_free_ char *buf = NULL; | |
912541b0 | 1483 | size_t len; |
f10aa08e YW |
1484 | char *line; |
1485 | ||
1486 | r = read_line(f, UTIL_LINE_SIZE, &buf); | |
1487 | if (r < 0) | |
1488 | return r; | |
1489 | if (r == 0) | |
1490 | break; | |
912541b0 | 1491 | |
912541b0 | 1492 | line_nr++; |
f10aa08e | 1493 | line = buf + strspn(buf, WHITESPACE); |
912541b0 | 1494 | |
f10aa08e | 1495 | if (line[0] == '#') |
912541b0 KS |
1496 | continue; |
1497 | ||
1498 | len = strlen(line); | |
912541b0 | 1499 | |
f10aa08e YW |
1500 | if (continuation && !ignore_line) { |
1501 | if (strlen(continuation) + len >= UTIL_LINE_SIZE) | |
1502 | ignore_line = true; | |
1503 | ||
1504 | if (!strextend(&continuation, line, NULL)) | |
1505 | return log_oom(); | |
1506 | ||
1507 | if (!ignore_line) { | |
1508 | line = continuation; | |
1509 | len = strlen(line); | |
1510 | } | |
912541b0 KS |
1511 | } |
1512 | ||
e8b2737f | 1513 | if (len > 0 && line[len - 1] == '\\') { |
f10aa08e YW |
1514 | if (ignore_line) |
1515 | continue; | |
1516 | ||
1517 | line[len - 1] = '\0'; | |
1518 | if (!continuation) { | |
1519 | continuation = strdup(line); | |
1520 | if (!continuation) | |
1521 | return log_oom(); | |
1522 | } | |
1523 | ||
912541b0 KS |
1524 | continue; |
1525 | } | |
f10aa08e YW |
1526 | |
1527 | if (ignore_line) | |
1528 | log_error("Line too long '%s':%u, ignored", filename, line_nr); | |
e8b2737f | 1529 | else if (len > 0) |
f10aa08e YW |
1530 | add_rule(rules, line, filename, filename_off, line_nr); |
1531 | ||
1532 | continuation = mfree(continuation); | |
1533 | ignore_line = false; | |
912541b0 | 1534 | } |
912541b0 KS |
1535 | |
1536 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1537 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1538 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1539 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
530727ae | 1540 | size_t j; |
912541b0 KS |
1541 | |
1542 | for (j = i+1; j < rules->token_cur; j++) { | |
1543 | if (rules->tokens[j].type != TK_RULE) | |
1544 | continue; | |
1545 | if (rules->tokens[j].rule.label_off == 0) | |
1546 | continue; | |
915bf0f6 | 1547 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1548 | continue; |
1549 | rules->tokens[i].key.rule_goto = j; | |
1550 | break; | |
1551 | } | |
1552 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1553 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1554 | } |
1555 | } | |
1556 | return 0; | |
c7521974 KS |
1557 | } |
1558 | ||
9a07157d ZJS |
1559 | int udev_rules_new(UdevRules **ret_rules, ResolveNameTiming resolve_name_timing) { |
1560 | _cleanup_(udev_rules_freep) UdevRules *rules = NULL; | |
1d791281 ZJS |
1561 | _cleanup_strv_free_ char **files = NULL; |
1562 | char **f; | |
775f8b3c | 1563 | int r; |
912541b0 | 1564 | |
c4d44cba YW |
1565 | assert(resolve_name_timing >= 0 && resolve_name_timing < _RESOLVE_NAME_TIMING_MAX); |
1566 | ||
9a07157d | 1567 | rules = new(UdevRules, 1); |
1017d66b | 1568 | if (!rules) |
1d791281 | 1569 | return -ENOMEM; |
1017d66b | 1570 | |
9a07157d | 1571 | *rules = (UdevRules) { |
c4d44cba | 1572 | .resolve_name_timing = resolve_name_timing, |
1017d66b | 1573 | }; |
912541b0 KS |
1574 | |
1575 | /* init token array and string buffer */ | |
145e020a | 1576 | rules->tokens = new(struct token, PREALLOC_TOKEN); |
67e4b385 | 1577 | if (!rules->tokens) |
1d791281 | 1578 | return -ENOMEM; |
912541b0 KS |
1579 | rules->token_max = PREALLOC_TOKEN; |
1580 | ||
915bf0f6 KS |
1581 | rules->strbuf = strbuf_new(); |
1582 | if (!rules->strbuf) | |
1d791281 | 1583 | return -ENOMEM; |
0820a4f0 | 1584 | |
3b8c1cb0 KS |
1585 | udev_rules_check_timestamp(rules); |
1586 | ||
116b91e8 | 1587 | r = conf_files_list_strv(&files, ".rules", NULL, 0, RULES_DIRS); |
1d791281 ZJS |
1588 | if (r < 0) |
1589 | return log_error_errno(r, "Failed to enumerate rules files: %m"); | |
912541b0 | 1590 | |
775f8b3c KS |
1591 | /* |
1592 | * The offset value in the rules strct is limited; add all | |
1593 | * rules file names to the beginning of the string buffer. | |
1594 | */ | |
1595 | STRV_FOREACH(f, files) | |
915bf0f6 | 1596 | rules_add_string(rules, *f); |
912541b0 | 1597 | |
775f8b3c KS |
1598 | STRV_FOREACH(f, files) |
1599 | parse_file(rules, *f); | |
1600 | ||
1d791281 | 1601 | struct token end_token = { .type = TK_END }; |
912541b0 | 1602 | add_token(rules, &end_token); |
530727ae | 1603 | log_debug("Rules contain %zu bytes tokens (%zu * %zu bytes), %zu bytes strings", |
915bf0f6 | 1604 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1605 | |
915bf0f6 | 1606 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1607 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1608 | rules->strbuf->in_count, rules->strbuf->in_len, |
1609 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1610 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1611 | |
1612 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1613 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1614 | rules->uids_cur = 0; |
1615 | rules->uids_max = 0; | |
a1e58e8e | 1616 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1617 | rules->gids_cur = 0; |
1618 | rules->gids_max = 0; | |
1619 | ||
1620 | dump_rules(rules); | |
1d791281 ZJS |
1621 | *ret_rules = TAKE_PTR(rules); |
1622 | return 0; | |
c7521974 KS |
1623 | } |
1624 | ||
9a07157d | 1625 | UdevRules *udev_rules_free(UdevRules *rules) { |
67e4b385 | 1626 | if (!rules) |
912541b0 KS |
1627 | return NULL; |
1628 | free(rules->tokens); | |
915bf0f6 | 1629 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1630 | free(rules->uids); |
1631 | free(rules->gids); | |
6b430fdb | 1632 | return mfree(rules); |
c7521974 | 1633 | } |
6880b25d | 1634 | |
9a07157d | 1635 | bool udev_rules_check_timestamp(UdevRules *rules) { |
5c11fbe3 KS |
1636 | if (!rules) |
1637 | return false; | |
1638 | ||
116b91e8 | 1639 | return paths_check_timestamp(RULES_DIRS, &rules->dirs_ts_usec, true); |
6ada823a KS |
1640 | } |
1641 | ||
605aa52f | 1642 | static bool match_key(UdevRules *rules, struct token *token, const char *val) { |
915bf0f6 | 1643 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1644 | char *pos; |
1645 | bool match = false; | |
1646 | ||
67e4b385 | 1647 | if (!val) |
912541b0 KS |
1648 | val = ""; |
1649 | ||
1650 | switch (token->key.glob) { | |
1651 | case GL_PLAIN: | |
bb175a03 | 1652 | match = streq(key_value, val); |
912541b0 KS |
1653 | break; |
1654 | case GL_GLOB: | |
1655 | match = (fnmatch(key_value, val, 0) == 0); | |
1656 | break; | |
1657 | case GL_SPLIT: | |
1658 | { | |
33502ffe | 1659 | const char *s; |
912541b0 KS |
1660 | size_t len; |
1661 | ||
915bf0f6 | 1662 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1663 | len = strlen(val); |
1664 | for (;;) { | |
1665 | const char *next; | |
1666 | ||
33502ffe | 1667 | next = strchr(s, '|'); |
67e4b385 | 1668 | if (next) { |
33502ffe | 1669 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1670 | |
641906e9 | 1671 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1672 | if (match) |
1673 | break; | |
1674 | } else { | |
bb175a03 | 1675 | match = streq(s, val); |
912541b0 KS |
1676 | break; |
1677 | } | |
33502ffe | 1678 | s = &next[1]; |
912541b0 KS |
1679 | } |
1680 | break; | |
1681 | } | |
1682 | case GL_SPLIT_GLOB: | |
1683 | { | |
1684 | char value[UTIL_PATH_SIZE]; | |
1685 | ||
d5a89d7d | 1686 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 | 1687 | key_value = value; |
67e4b385 | 1688 | while (key_value) { |
912541b0 | 1689 | pos = strchr(key_value, '|'); |
67e4b385 | 1690 | if (pos) { |
912541b0 KS |
1691 | pos[0] = '\0'; |
1692 | pos = &pos[1]; | |
1693 | } | |
912541b0 KS |
1694 | match = (fnmatch(key_value, val, 0) == 0); |
1695 | if (match) | |
1696 | break; | |
1697 | key_value = pos; | |
1698 | } | |
1699 | break; | |
1700 | } | |
1701 | case GL_SOMETHING: | |
1702 | match = (val[0] != '\0'); | |
1703 | break; | |
1704 | case GL_UNSET: | |
605aa52f | 1705 | return false; |
912541b0 KS |
1706 | } |
1707 | ||
605aa52f | 1708 | return token->key.op == (match ? OP_MATCH : OP_NOMATCH); |
6880b25d KS |
1709 | } |
1710 | ||
605aa52f | 1711 | static bool match_attr(UdevRules *rules, sd_device *dev, UdevEvent *event, struct token *cur) { |
5ba7e798 YW |
1712 | char nbuf[UTIL_NAME_SIZE], vbuf[UTIL_NAME_SIZE]; |
1713 | const char *name, *value; | |
912541b0 KS |
1714 | size_t len; |
1715 | ||
915bf0f6 | 1716 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1717 | switch (cur->key.attrsubst) { |
1718 | case SB_FORMAT: | |
e20a9171 | 1719 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false); |
912541b0 | 1720 | name = nbuf; |
4831981d | 1721 | _fallthrough_; |
912541b0 | 1722 | case SB_NONE: |
5ba7e798 | 1723 | if (sd_device_get_sysattr_value(dev, name, &value) < 0) |
605aa52f | 1724 | return false; |
912541b0 KS |
1725 | break; |
1726 | case SB_SUBSYS: | |
76b9bdd9 | 1727 | if (util_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) < 0) |
605aa52f | 1728 | return false; |
912541b0 KS |
1729 | value = vbuf; |
1730 | break; | |
1731 | default: | |
605aa52f | 1732 | return false; |
912541b0 KS |
1733 | } |
1734 | ||
1735 | /* remove trailing whitespace, if not asked to match for it */ | |
1736 | len = strlen(value); | |
1737 | if (len > 0 && isspace(value[len-1])) { | |
1738 | const char *key_value; | |
1739 | size_t klen; | |
1740 | ||
915bf0f6 | 1741 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1742 | klen = strlen(key_value); |
1743 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1744 | if (value != vbuf) { | |
d5a89d7d | 1745 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1746 | value = vbuf; |
1747 | } | |
1748 | while (len > 0 && isspace(vbuf[--len])) | |
1749 | vbuf[len] = '\0'; | |
912541b0 KS |
1750 | } |
1751 | } | |
1752 | ||
1753 | return match_key(rules, cur, value); | |
6880b25d KS |
1754 | } |
1755 | ||
1756 | enum escape_type { | |
912541b0 KS |
1757 | ESCAPE_UNSET, |
1758 | ESCAPE_NONE, | |
1759 | ESCAPE_REPLACE, | |
6880b25d KS |
1760 | }; |
1761 | ||
d838e145 | 1762 | int udev_rules_apply_to_event( |
9a07157d | 1763 | UdevRules *rules, |
2e088715 | 1764 | UdevEvent *event, |
d838e145 | 1765 | usec_t timeout_usec, |
9b5150b6 | 1766 | Hashmap *properties_list) { |
cf28ad46 | 1767 | sd_device *dev = event->dev; |
912541b0 | 1768 | enum escape_type esc = ESCAPE_UNSET; |
cf697ec0 YW |
1769 | struct token *cur, *rule; |
1770 | const char *action, *val; | |
912541b0 | 1771 | bool can_set_name; |
88b013b2 | 1772 | int r; |
912541b0 | 1773 | |
d838e145 YW |
1774 | if (!rules->tokens) |
1775 | return 0; | |
912541b0 | 1776 | |
cf697ec0 YW |
1777 | r = sd_device_get_property_value(dev, "ACTION", &action); |
1778 | if (r < 0) | |
1779 | return r; | |
1780 | ||
1781 | can_set_name = (!streq(action, "remove") && | |
1782 | (sd_device_get_devnum(dev, NULL) >= 0 || | |
1783 | sd_device_get_ifindex(dev, NULL) >= 0)); | |
912541b0 KS |
1784 | |
1785 | /* loop through token list, match, run actions or forward to next rule */ | |
1786 | cur = &rules->tokens[0]; | |
1787 | rule = cur; | |
1788 | for (;;) { | |
1789 | dump_token(rules, cur); | |
1790 | switch (cur->type) { | |
1791 | case TK_RULE: | |
1792 | /* current rule */ | |
1793 | rule = cur; | |
1794 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1795 | if (!can_set_name && rule->rule.can_set_name) | |
1796 | goto nomatch; | |
1797 | esc = ESCAPE_UNSET; | |
1798 | break; | |
1799 | case TK_M_ACTION: | |
605aa52f | 1800 | if (!match_key(rules, cur, action)) |
912541b0 KS |
1801 | goto nomatch; |
1802 | break; | |
1803 | case TK_M_DEVPATH: | |
cf697ec0 YW |
1804 | if (sd_device_get_devpath(dev, &val) < 0) |
1805 | goto nomatch; | |
605aa52f | 1806 | if (!match_key(rules, cur, val)) |
912541b0 KS |
1807 | goto nomatch; |
1808 | break; | |
1809 | case TK_M_KERNEL: | |
cf697ec0 YW |
1810 | if (sd_device_get_sysname(dev, &val) < 0) |
1811 | goto nomatch; | |
605aa52f | 1812 | if (!match_key(rules, cur, val)) |
912541b0 KS |
1813 | goto nomatch; |
1814 | break; | |
1815 | case TK_M_DEVLINK: { | |
dbea7f24 | 1816 | const char *devlink; |
912541b0 KS |
1817 | bool match = false; |
1818 | ||
cf697ec0 | 1819 | FOREACH_DEVICE_DEVLINK(dev, devlink) |
605aa52f | 1820 | if (match_key(rules, cur, devlink + STRLEN("/dev/"))) { |
912541b0 KS |
1821 | match = true; |
1822 | break; | |
1823 | } | |
dbea7f24 | 1824 | |
912541b0 KS |
1825 | if (!match) |
1826 | goto nomatch; | |
1827 | break; | |
1828 | } | |
1829 | case TK_M_NAME: | |
605aa52f | 1830 | if (!match_key(rules, cur, event->name)) |
912541b0 KS |
1831 | goto nomatch; |
1832 | break; | |
1833 | case TK_M_ENV: { | |
915bf0f6 | 1834 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 | 1835 | |
cf697ec0 YW |
1836 | if (sd_device_get_property_value(dev, key_name, &val) < 0) { |
1837 | /* check global properties */ | |
1838 | if (properties_list) | |
1839 | val = hashmap_get(properties_list, key_name); | |
1840 | else | |
1841 | val = NULL; | |
1842 | } | |
adeba500 | 1843 | |
605aa52f | 1844 | if (!match_key(rules, cur, strempty(val))) |
912541b0 KS |
1845 | goto nomatch; |
1846 | break; | |
1847 | } | |
1848 | case TK_M_TAG: { | |
912541b0 | 1849 | bool match = false; |
dbea7f24 | 1850 | const char *tag; |
912541b0 | 1851 | |
cf697ec0 | 1852 | FOREACH_DEVICE_TAG(dev, tag) |
dbea7f24 | 1853 | if (streq(rules_str(rules, cur->key.value_off), tag)) { |
912541b0 KS |
1854 | match = true; |
1855 | break; | |
1856 | } | |
dbea7f24 | 1857 | |
4302857b FF |
1858 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1859 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1860 | goto nomatch; |
1861 | break; | |
1862 | } | |
1863 | case TK_M_SUBSYSTEM: | |
cf697ec0 YW |
1864 | if (sd_device_get_subsystem(dev, &val) < 0) |
1865 | goto nomatch; | |
605aa52f | 1866 | if (!match_key(rules, cur, val)) |
912541b0 KS |
1867 | goto nomatch; |
1868 | break; | |
1869 | case TK_M_DRIVER: | |
cf697ec0 YW |
1870 | if (sd_device_get_driver(dev, &val) < 0) |
1871 | goto nomatch; | |
605aa52f | 1872 | if (!match_key(rules, cur, val)) |
912541b0 KS |
1873 | goto nomatch; |
1874 | break; | |
912541b0 | 1875 | case TK_M_ATTR: |
605aa52f | 1876 | if (!match_attr(rules, dev, event, cur)) |
912541b0 KS |
1877 | goto nomatch; |
1878 | break; | |
f4cf2e5b KS |
1879 | case TK_M_SYSCTL: { |
1880 | char filename[UTIL_PATH_SIZE]; | |
1881 | _cleanup_free_ char *value = NULL; | |
1882 | size_t len; | |
1883 | ||
e20a9171 | 1884 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b KS |
1885 | sysctl_normalize(filename); |
1886 | if (sysctl_read(filename, &value) < 0) | |
1887 | goto nomatch; | |
1888 | ||
1889 | len = strlen(value); | |
1890 | while (len > 0 && isspace(value[--len])) | |
1891 | value[len] = '\0'; | |
605aa52f | 1892 | if (!match_key(rules, cur, value)) |
f4cf2e5b KS |
1893 | goto nomatch; |
1894 | break; | |
1895 | } | |
912541b0 KS |
1896 | case TK_M_KERNELS: |
1897 | case TK_M_SUBSYSTEMS: | |
1898 | case TK_M_DRIVERS: | |
1899 | case TK_M_ATTRS: | |
1900 | case TK_M_TAGS: { | |
1901 | struct token *next; | |
1902 | ||
1903 | /* get whole sequence of parent matches */ | |
1904 | next = cur; | |
1905 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1906 | next++; | |
1907 | ||
1908 | /* loop over parents */ | |
cf697ec0 | 1909 | event->dev_parent = dev; |
912541b0 KS |
1910 | for (;;) { |
1911 | struct token *key; | |
1912 | ||
912541b0 KS |
1913 | /* loop over sequence of parent match keys */ |
1914 | for (key = cur; key < next; key++ ) { | |
1915 | dump_token(rules, key); | |
1916 | switch(key->type) { | |
1917 | case TK_M_KERNELS: | |
f3d241fe YW |
1918 | if (sd_device_get_sysname(event->dev_parent, &val) < 0) |
1919 | goto try_parent; | |
605aa52f | 1920 | if (!match_key(rules, key, val)) |
912541b0 KS |
1921 | goto try_parent; |
1922 | break; | |
1923 | case TK_M_SUBSYSTEMS: | |
f3d241fe YW |
1924 | if (sd_device_get_subsystem(event->dev_parent, &val) < 0) |
1925 | goto try_parent; | |
605aa52f | 1926 | if (!match_key(rules, key, val)) |
912541b0 KS |
1927 | goto try_parent; |
1928 | break; | |
1929 | case TK_M_DRIVERS: | |
f3d241fe YW |
1930 | if (sd_device_get_driver(event->dev_parent, &val) < 0) |
1931 | goto try_parent; | |
605aa52f | 1932 | if (!match_key(rules, key, val)) |
912541b0 KS |
1933 | goto try_parent; |
1934 | break; | |
1935 | case TK_M_ATTRS: | |
605aa52f | 1936 | if (!match_attr(rules, event->dev_parent, event, key)) |
912541b0 KS |
1937 | goto try_parent; |
1938 | break; | |
1939 | case TK_M_TAGS: { | |
f3d241fe | 1940 | bool match = sd_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1941 | |
1942 | if (match && key->key.op == OP_NOMATCH) | |
1943 | goto try_parent; | |
1944 | if (!match && key->key.op == OP_MATCH) | |
1945 | goto try_parent; | |
1946 | break; | |
1947 | } | |
1948 | default: | |
1949 | goto nomatch; | |
1950 | } | |
912541b0 | 1951 | } |
912541b0 KS |
1952 | break; |
1953 | ||
1954 | try_parent: | |
f3d241fe YW |
1955 | if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) { |
1956 | event->dev_parent = NULL; | |
912541b0 | 1957 | goto nomatch; |
f3d241fe | 1958 | } |
912541b0 KS |
1959 | } |
1960 | /* move behind our sequence of parent match keys */ | |
1961 | cur = next; | |
1962 | continue; | |
1963 | } | |
1964 | case TK_M_TEST: { | |
1965 | char filename[UTIL_PATH_SIZE]; | |
1966 | struct stat statbuf; | |
1967 | int match; | |
1968 | ||
e20a9171 | 1969 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename), false); |
76b9bdd9 | 1970 | if (util_resolve_subsys_kernel(filename, filename, sizeof(filename), false) < 0) { |
912541b0 KS |
1971 | if (filename[0] != '/') { |
1972 | char tmp[UTIL_PATH_SIZE]; | |
1973 | ||
cf697ec0 YW |
1974 | if (sd_device_get_syspath(dev, &val) < 0) |
1975 | goto nomatch; | |
1976 | ||
d5a89d7d | 1977 | strscpy(tmp, sizeof(tmp), filename); |
cf697ec0 | 1978 | strscpyl(filename, sizeof(filename), val, "/", tmp, NULL); |
912541b0 KS |
1979 | } |
1980 | } | |
1981 | attr_subst_subdir(filename, sizeof(filename)); | |
1982 | ||
1983 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 1984 | if (match && cur->key.mode > 0) |
912541b0 | 1985 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
1986 | if (match && cur->key.op == OP_NOMATCH) |
1987 | goto nomatch; | |
1988 | if (!match && cur->key.op == OP_MATCH) | |
1989 | goto nomatch; | |
1990 | break; | |
1991 | } | |
912541b0 | 1992 | case TK_M_PROGRAM: { |
cf697ec0 | 1993 | char program[UTIL_PATH_SIZE], result[UTIL_LINE_SIZE]; |
912541b0 | 1994 | |
a1e58e8e | 1995 | event->program_result = mfree(event->program_result); |
e20a9171 | 1996 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program), false); |
b4ba2fe3 YW |
1997 | log_device_debug(dev, "PROGRAM '%s' %s:%u", |
1998 | program, | |
1999 | rules_str(rules, rule->rule.filename_off), | |
2000 | rule->rule.filename_line); | |
912541b0 | 2001 | |
a7521142 | 2002 | if (udev_event_spawn(event, timeout_usec, true, program, result, sizeof(result)) != 0) { |
912541b0 KS |
2003 | if (cur->key.op != OP_NOMATCH) |
2004 | goto nomatch; | |
2005 | } else { | |
2006 | int count; | |
2007 | ||
7546145e | 2008 | delete_trailing_chars(result, "\n"); |
4c701096 | 2009 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
2010 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); |
2011 | if (count > 0) | |
b4ba2fe3 | 2012 | log_device_debug(dev, "Replaced %i character(s) from result of '%s'" , count, program); |
912541b0 KS |
2013 | } |
2014 | event->program_result = strdup(result); | |
912541b0 KS |
2015 | if (cur->key.op == OP_NOMATCH) |
2016 | goto nomatch; | |
2017 | } | |
2018 | break; | |
2019 | } | |
2020 | case TK_M_IMPORT_FILE: { | |
2021 | char import[UTIL_PATH_SIZE]; | |
2022 | ||
e20a9171 | 2023 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
76b9bdd9 | 2024 | if (import_file_into_properties(dev, import) < 0) |
912541b0 KS |
2025 | if (cur->key.op != OP_NOMATCH) |
2026 | goto nomatch; | |
2027 | break; | |
2028 | } | |
2029 | case TK_M_IMPORT_PROG: { | |
2030 | char import[UTIL_PATH_SIZE]; | |
2031 | ||
e20a9171 | 2032 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
b4ba2fe3 YW |
2033 | log_device_debug(dev, "IMPORT '%s' %s:%u", |
2034 | import, | |
2035 | rules_str(rules, rule->rule.filename_off), | |
2036 | rule->rule.filename_line); | |
912541b0 | 2037 | |
76b9bdd9 | 2038 | if (import_program_into_properties(event, timeout_usec, import) < 0) |
912541b0 KS |
2039 | if (cur->key.op != OP_NOMATCH) |
2040 | goto nomatch; | |
2041 | break; | |
2042 | } | |
2043 | case TK_M_IMPORT_BUILTIN: { | |
2044 | char command[UTIL_PATH_SIZE]; | |
2045 | ||
2046 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2047 | /* check if we ran already */ | |
2048 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
b4ba2fe3 YW |
2049 | log_device_debug(dev, "IMPORT builtin skip '%s' %s:%u", |
2050 | udev_builtin_name(cur->key.builtin_cmd), | |
2051 | rules_str(rules, rule->rule.filename_off), | |
2052 | rule->rule.filename_line); | |
912541b0 KS |
2053 | /* return the result from earlier run */ |
2054 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2055 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2056 | goto nomatch; |
2057 | break; | |
2058 | } | |
2059 | /* mark as ran */ | |
2060 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2061 | } | |
2062 | ||
e20a9171 | 2063 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command), false); |
b4ba2fe3 YW |
2064 | log_device_debug(dev, "IMPORT builtin '%s' %s:%u", |
2065 | udev_builtin_name(cur->key.builtin_cmd), | |
2066 | rules_str(rules, rule->rule.filename_off), | |
2067 | rule->rule.filename_line); | |
912541b0 | 2068 | |
cf697ec0 | 2069 | r = udev_builtin_run(dev, cur->key.builtin_cmd, command, false); |
d354690e | 2070 | if (r < 0) { |
912541b0 | 2071 | /* remember failure */ |
b4ba2fe3 YW |
2072 | log_device_debug_errno(dev, r, "IMPORT builtin '%s' fails: %m", |
2073 | udev_builtin_name(cur->key.builtin_cmd)); | |
912541b0 KS |
2074 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2075 | if (cur->key.op != OP_NOMATCH) | |
2076 | goto nomatch; | |
2077 | } | |
2078 | break; | |
2079 | } | |
2080 | case TK_M_IMPORT_DB: { | |
cf697ec0 | 2081 | const char *key; |
912541b0 | 2082 | |
cf697ec0 | 2083 | key = rules_str(rules, cur->key.value_off); |
a6da77b7 YW |
2084 | if (event->dev_db_clone && |
2085 | sd_device_get_property_value(event->dev_db_clone, key, &val) >= 0) | |
cf697ec0 | 2086 | device_add_property(dev, key, val); |
480ecb7d YW |
2087 | else if (cur->key.op != OP_NOMATCH) |
2088 | goto nomatch; | |
912541b0 KS |
2089 | break; |
2090 | } | |
2091 | case TK_M_IMPORT_CMDLINE: { | |
88b013b2 | 2092 | _cleanup_free_ char *value = NULL; |
912541b0 | 2093 | bool imported = false; |
88b013b2 | 2094 | const char *key; |
912541b0 | 2095 | |
88b013b2 | 2096 | key = rules_str(rules, cur->key.value_off); |
88b013b2 LP |
2097 | r = proc_cmdline_get_key(key, PROC_CMDLINE_VALUE_OPTIONAL, &value); |
2098 | if (r < 0) | |
b4ba2fe3 | 2099 | log_device_debug_errno(dev, r, "Failed to read %s from /proc/cmdline, ignoring: %m", key); |
88b013b2 LP |
2100 | else if (r > 0) { |
2101 | imported = true; | |
2102 | ||
2103 | if (value) | |
cf697ec0 | 2104 | device_add_property(dev, key, value); |
88b013b2 LP |
2105 | else |
2106 | /* we import simple flags as 'FLAG=1' */ | |
cf697ec0 | 2107 | device_add_property(dev, key, "1"); |
912541b0 | 2108 | } |
88b013b2 | 2109 | |
912541b0 KS |
2110 | if (!imported && cur->key.op != OP_NOMATCH) |
2111 | goto nomatch; | |
2112 | break; | |
2113 | } | |
2114 | case TK_M_IMPORT_PARENT: { | |
2115 | char import[UTIL_PATH_SIZE]; | |
2116 | ||
e20a9171 | 2117 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
76b9bdd9 | 2118 | if (import_parent_into_properties(dev, import) < 0) |
912541b0 KS |
2119 | if (cur->key.op != OP_NOMATCH) |
2120 | goto nomatch; | |
2121 | break; | |
2122 | } | |
2123 | case TK_M_RESULT: | |
605aa52f | 2124 | if (!match_key(rules, cur, event->program_result)) |
912541b0 KS |
2125 | goto nomatch; |
2126 | break; | |
2127 | case TK_A_STRING_ESCAPE_NONE: | |
2128 | esc = ESCAPE_NONE; | |
2129 | break; | |
2130 | case TK_A_STRING_ESCAPE_REPLACE: | |
2131 | esc = ESCAPE_REPLACE; | |
2132 | break; | |
2133 | case TK_A_DB_PERSIST: | |
cf697ec0 | 2134 | device_set_db_persist(dev); |
912541b0 KS |
2135 | break; |
2136 | case TK_A_INOTIFY_WATCH: | |
2137 | if (event->inotify_watch_final) | |
2138 | break; | |
2139 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2140 | event->inotify_watch_final = true; | |
2141 | event->inotify_watch = cur->key.watch; | |
2142 | break; | |
2143 | case TK_A_DEVLINK_PRIO: | |
cf697ec0 | 2144 | device_set_devlink_priority(dev, cur->key.devlink_prio); |
912541b0 KS |
2145 | break; |
2146 | case TK_A_OWNER: { | |
2147 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2148 | const char *ow = owner; |
912541b0 KS |
2149 | |
2150 | if (event->owner_final) | |
2151 | break; | |
2152 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2153 | event->owner_final = true; | |
e20a9171 | 2154 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner), false); |
1edefa4f | 2155 | event->owner_set = true; |
fafff8f1 | 2156 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2157 | if (r < 0) { |
b4ba2fe3 | 2158 | log_unknown_owner(dev, r, "user", owner); |
23bf8dd7 TG |
2159 | event->uid = 0; |
2160 | } | |
b4ba2fe3 YW |
2161 | log_device_debug(dev, "OWNER %u %s:%u", |
2162 | event->uid, | |
2163 | rules_str(rules, rule->rule.filename_off), | |
2164 | rule->rule.filename_line); | |
912541b0 KS |
2165 | break; |
2166 | } | |
2167 | case TK_A_GROUP: { | |
2168 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2169 | const char *gr = group; |
912541b0 KS |
2170 | |
2171 | if (event->group_final) | |
2172 | break; | |
2173 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2174 | event->group_final = true; | |
e20a9171 | 2175 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group), false); |
1edefa4f | 2176 | event->group_set = true; |
fafff8f1 | 2177 | r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2178 | if (r < 0) { |
b4ba2fe3 | 2179 | log_unknown_owner(dev, r, "group", group); |
23bf8dd7 TG |
2180 | event->gid = 0; |
2181 | } | |
b4ba2fe3 YW |
2182 | log_device_debug(dev, "GROUP %u %s:%u", |
2183 | event->gid, | |
2184 | rules_str(rules, rule->rule.filename_off), | |
2185 | rule->rule.filename_line); | |
912541b0 KS |
2186 | break; |
2187 | } | |
2188 | case TK_A_MODE: { | |
b4ba2fe3 | 2189 | char mode_str[UTIL_NAME_SIZE]; |
912541b0 | 2190 | mode_t mode; |
912541b0 KS |
2191 | |
2192 | if (event->mode_final) | |
2193 | break; | |
e20a9171 | 2194 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str), false); |
b4ba2fe3 YW |
2195 | r = parse_mode(mode_str, &mode); |
2196 | if (r < 0) { | |
2197 | log_device_error_errno(dev, r, "Failed to parse mode '%s': %m", mode_str); | |
912541b0 KS |
2198 | break; |
2199 | } | |
2200 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2201 | event->mode_final = true; | |
2202 | event->mode_set = true; | |
2203 | event->mode = mode; | |
b4ba2fe3 YW |
2204 | log_device_debug(dev, "MODE %#o %s:%u", |
2205 | event->mode, | |
2206 | rules_str(rules, rule->rule.filename_off), | |
2207 | rule->rule.filename_line); | |
912541b0 KS |
2208 | break; |
2209 | } | |
2210 | case TK_A_OWNER_ID: | |
2211 | if (event->owner_final) | |
2212 | break; | |
2213 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2214 | event->owner_final = true; | |
1edefa4f | 2215 | event->owner_set = true; |
912541b0 | 2216 | event->uid = cur->key.uid; |
b4ba2fe3 YW |
2217 | log_device_debug(dev, "OWNER %u %s:%u", |
2218 | event->uid, | |
2219 | rules_str(rules, rule->rule.filename_off), | |
2220 | rule->rule.filename_line); | |
912541b0 KS |
2221 | break; |
2222 | case TK_A_GROUP_ID: | |
2223 | if (event->group_final) | |
2224 | break; | |
2225 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2226 | event->group_final = true; | |
1edefa4f | 2227 | event->group_set = true; |
912541b0 | 2228 | event->gid = cur->key.gid; |
b4ba2fe3 YW |
2229 | log_device_debug(dev, "GROUP %u %s:%u", |
2230 | event->gid, | |
2231 | rules_str(rules, rule->rule.filename_off), | |
2232 | rule->rule.filename_line); | |
912541b0 KS |
2233 | break; |
2234 | case TK_A_MODE_ID: | |
2235 | if (event->mode_final) | |
2236 | break; | |
2237 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2238 | event->mode_final = true; | |
2239 | event->mode_set = true; | |
2240 | event->mode = cur->key.mode; | |
b4ba2fe3 YW |
2241 | log_device_debug(dev, "MODE %#o %s:%u", |
2242 | event->mode, | |
2243 | rules_str(rules, rule->rule.filename_off), | |
2244 | rule->rule.filename_line); | |
912541b0 | 2245 | break; |
c26547d6 | 2246 | case TK_A_SECLABEL: { |
d838e145 | 2247 | _cleanup_free_ char *name = NULL, *label = NULL; |
4f985bd8 | 2248 | char label_str[UTIL_LINE_SIZE] = {}; |
c26547d6 | 2249 | |
d838e145 YW |
2250 | name = strdup(rules_str(rules, cur->key.attr_off)); |
2251 | if (!name) | |
2252 | return log_oom(); | |
2253 | ||
e20a9171 | 2254 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), label_str, sizeof(label_str), false); |
d838e145 YW |
2255 | if (!isempty(label_str)) |
2256 | label = strdup(label_str); | |
4f985bd8 | 2257 | else |
d838e145 YW |
2258 | label = strdup(rules_str(rules, cur->key.value_off)); |
2259 | if (!label) | |
2260 | return log_oom(); | |
4f985bd8 | 2261 | |
4c701096 | 2262 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
39a15c8a | 2263 | ordered_hashmap_clear_free_free(event->seclabel_list); |
d838e145 | 2264 | |
39a15c8a | 2265 | r = ordered_hashmap_ensure_allocated(&event->seclabel_list, NULL); |
d838e145 YW |
2266 | if (r < 0) |
2267 | return log_oom(); | |
2268 | ||
39a15c8a | 2269 | r = ordered_hashmap_put(event->seclabel_list, name, label); |
d838e145 YW |
2270 | if (r < 0) |
2271 | return log_oom(); | |
b4ba2fe3 YW |
2272 | log_device_debug(dev, "SECLABEL{%s}='%s' %s:%u", |
2273 | name, label, | |
2274 | rules_str(rules, rule->rule.filename_off), | |
2275 | rule->rule.filename_line); | |
a6ca3c19 ZJS |
2276 | name = label = NULL; |
2277 | ||
c26547d6 KS |
2278 | break; |
2279 | } | |
912541b0 | 2280 | case TK_A_ENV: { |
07845c14 | 2281 | char value_new[UTIL_NAME_SIZE]; |
cf697ec0 | 2282 | const char *name, *value_old; |
912541b0 | 2283 | |
cf697ec0 YW |
2284 | name = rules_str(rules, cur->key.attr_off); |
2285 | val = rules_str(rules, cur->key.value_off); | |
2286 | if (val[0] == '\0') { | |
07845c14 KS |
2287 | if (cur->key.op == OP_ADD) |
2288 | break; | |
cf697ec0 | 2289 | device_add_property(dev, name, NULL); |
07845c14 | 2290 | break; |
912541b0 | 2291 | } |
07845c14 | 2292 | |
cf697ec0 YW |
2293 | if (cur->key.op == OP_ADD && |
2294 | sd_device_get_property_value(dev, name, &value_old) >= 0) { | |
07845c14 KS |
2295 | char temp[UTIL_NAME_SIZE]; |
2296 | ||
2297 | /* append value separated by space */ | |
cf697ec0 | 2298 | udev_event_apply_format(event, val, temp, sizeof(temp), false); |
d5a89d7d | 2299 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 | 2300 | } else |
cf697ec0 | 2301 | udev_event_apply_format(event, val, value_new, sizeof(value_new), false); |
07845c14 | 2302 | |
cf697ec0 | 2303 | device_add_property(dev, name, value_new); |
912541b0 KS |
2304 | break; |
2305 | } | |
2306 | case TK_A_TAG: { | |
2307 | char tag[UTIL_PATH_SIZE]; | |
2308 | const char *p; | |
2309 | ||
e20a9171 | 2310 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag), false); |
4c701096 | 2311 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2312 | device_cleanup_tags(dev); |
912541b0 KS |
2313 | for (p = tag; *p != '\0'; p++) { |
2314 | if ((*p >= 'a' && *p <= 'z') || | |
2315 | (*p >= 'A' && *p <= 'Z') || | |
2316 | (*p >= '0' && *p <= '9') || | |
4c701096 | 2317 | IN_SET(*p, '-', '_')) |
912541b0 | 2318 | continue; |
b4ba2fe3 | 2319 | log_device_error(dev, "Ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2320 | break; |
2321 | } | |
8e3ba377 | 2322 | if (cur->key.op == OP_REMOVE) |
cf697ec0 | 2323 | device_remove_tag(dev, tag); |
8e3ba377 | 2324 | else |
cf697ec0 | 2325 | device_add_tag(dev, tag); |
912541b0 KS |
2326 | break; |
2327 | } | |
2328 | case TK_A_NAME: { | |
912541b0 | 2329 | char name_str[UTIL_PATH_SIZE]; |
cf697ec0 | 2330 | const char *name; |
912541b0 KS |
2331 | int count; |
2332 | ||
cf697ec0 | 2333 | name = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2334 | if (event->name_final) |
2335 | break; | |
2336 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2337 | event->name_final = true; | |
e20a9171 | 2338 | udev_event_apply_format(event, name, name_str, sizeof(name_str), false); |
4c701096 | 2339 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
2340 | count = util_replace_chars(name_str, "/"); |
2341 | if (count > 0) | |
b4ba2fe3 | 2342 | log_device_debug(dev, "Replaced %i character(s) from result of NAME=\"%s\"", count, name); |
912541b0 | 2343 | } |
cf697ec0 YW |
2344 | if (sd_device_get_devnum(dev, NULL) >= 0 && |
2345 | (sd_device_get_devname(dev, &val) < 0 || | |
2346 | !streq(name_str, val + STRLEN("/dev/")))) { | |
b4ba2fe3 YW |
2347 | log_device_error(dev, "Kernel device nodes cannot be renamed, ignoring NAME=\"%s\"; please fix it in %s:%u\n", |
2348 | name, | |
2349 | rules_str(rules, rule->rule.filename_off), | |
2350 | rule->rule.filename_line); | |
6ada823a | 2351 | break; |
0ecfcbd4 | 2352 | } |
d838e145 YW |
2353 | if (free_and_strdup(&event->name, name_str) < 0) |
2354 | return log_oom(); | |
2355 | ||
b4ba2fe3 YW |
2356 | log_device_debug(dev, "NAME '%s' %s:%u", |
2357 | event->name, | |
2358 | rules_str(rules, rule->rule.filename_off), | |
2359 | rule->rule.filename_line); | |
912541b0 KS |
2360 | break; |
2361 | } | |
2362 | case TK_A_DEVLINK: { | |
cf697ec0 | 2363 | char temp[UTIL_PATH_SIZE], filename[UTIL_PATH_SIZE], *pos, *next; |
912541b0 KS |
2364 | int count = 0; |
2365 | ||
2366 | if (event->devlink_final) | |
2367 | break; | |
cf697ec0 | 2368 | if (sd_device_get_devnum(dev, NULL) < 0) |
912541b0 KS |
2369 | break; |
2370 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2371 | event->devlink_final = true; | |
4c701096 | 2372 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2373 | device_cleanup_devlinks(dev); |
912541b0 KS |
2374 | |
2375 | /* allow multiple symlinks separated by spaces */ | |
0a10235e | 2376 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp), esc != ESCAPE_NONE); |
912541b0 KS |
2377 | if (esc == ESCAPE_UNSET) |
2378 | count = util_replace_chars(temp, "/ "); | |
2379 | else if (esc == ESCAPE_REPLACE) | |
2380 | count = util_replace_chars(temp, "/"); | |
2381 | if (count > 0) | |
b4ba2fe3 | 2382 | log_device_debug(dev, "Replaced %i character(s) from result of LINK" , count); |
912541b0 KS |
2383 | pos = temp; |
2384 | while (isspace(pos[0])) | |
2385 | pos++; | |
2386 | next = strchr(pos, ' '); | |
cf697ec0 | 2387 | while (next) { |
912541b0 | 2388 | next[0] = '\0'; |
b4ba2fe3 YW |
2389 | log_device_debug(dev, "LINK '%s' %s:%u", pos, |
2390 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
d5a89d7d | 2391 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2392 | device_add_devlink(dev, filename); |
912541b0 KS |
2393 | while (isspace(next[1])) |
2394 | next++; | |
2395 | pos = &next[1]; | |
2396 | next = strchr(pos, ' '); | |
2397 | } | |
2398 | if (pos[0] != '\0') { | |
b4ba2fe3 YW |
2399 | log_device_debug(dev, "LINK '%s' %s:%u", pos, |
2400 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
d5a89d7d | 2401 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2402 | device_add_devlink(dev, filename); |
912541b0 KS |
2403 | } |
2404 | break; | |
2405 | } | |
2406 | case TK_A_ATTR: { | |
cf697ec0 | 2407 | char attr[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
fdd21be6 | 2408 | _cleanup_fclose_ FILE *f = NULL; |
cf697ec0 | 2409 | const char *key_name; |
912541b0 | 2410 | |
cf697ec0 | 2411 | key_name = rules_str(rules, cur->key.attr_off); |
76b9bdd9 | 2412 | if (util_resolve_subsys_kernel(key_name, attr, sizeof(attr), false) < 0 && |
cf697ec0 YW |
2413 | sd_device_get_syspath(dev, &val) >= 0) |
2414 | strscpyl(attr, sizeof(attr), val, "/", key_name, NULL); | |
912541b0 KS |
2415 | attr_subst_subdir(attr, sizeof(attr)); |
2416 | ||
e20a9171 | 2417 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
b4ba2fe3 YW |
2418 | log_device_debug(dev, "ATTR '%s' writing '%s' %s:%u", attr, value, |
2419 | rules_str(rules, rule->rule.filename_off), | |
2420 | rule->rule.filename_line); | |
47ef94ac | 2421 | f = fopen(attr, "we"); |
67e4b385 | 2422 | if (!f) |
b4ba2fe3 | 2423 | log_device_error_errno(dev, errno, "Failed to open ATTR{%s} for writing: %m", attr); |
fdd21be6 | 2424 | else if (fprintf(f, "%s", value) <= 0) |
b4ba2fe3 | 2425 | log_device_error_errno(dev, errno, "Failed to write ATTR{%s}: %m", attr); |
912541b0 KS |
2426 | break; |
2427 | } | |
f4cf2e5b | 2428 | case TK_A_SYSCTL: { |
cf697ec0 | 2429 | char filename[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
f4cf2e5b | 2430 | |
e20a9171 | 2431 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b | 2432 | sysctl_normalize(filename); |
e20a9171 | 2433 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
b4ba2fe3 YW |
2434 | log_device_debug(dev, "SYSCTL '%s' writing '%s' %s:%u", filename, value, |
2435 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
f4cf2e5b KS |
2436 | r = sysctl_write(filename, value); |
2437 | if (r < 0) | |
b4ba2fe3 | 2438 | log_device_error_errno(dev, r, "Failed to write SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2439 | break; |
2440 | } | |
83cd6b75 KS |
2441 | case TK_A_RUN_BUILTIN: |
2442 | case TK_A_RUN_PROGRAM: { | |
29448498 YW |
2443 | _cleanup_free_ char *cmd = NULL; |
2444 | ||
e924c60f | 2445 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
39a15c8a | 2446 | ordered_hashmap_clear_free_key(event->run_list); |
29448498 | 2447 | |
39a15c8a | 2448 | r = ordered_hashmap_ensure_allocated(&event->run_list, NULL); |
29448498 YW |
2449 | if (r < 0) |
2450 | return log_oom(); | |
2451 | ||
2452 | cmd = strdup(rules_str(rules, cur->key.value_off)); | |
2453 | if (!cmd) | |
2454 | return log_oom(); | |
2455 | ||
39a15c8a | 2456 | r = ordered_hashmap_put(event->run_list, cmd, INT_TO_PTR(cur->key.builtin_cmd)); |
29448498 YW |
2457 | if (r < 0) |
2458 | return log_oom(); | |
2459 | ||
2460 | cmd = NULL; | |
83cd6b75 | 2461 | |
b4ba2fe3 YW |
2462 | log_device_debug(dev, "RUN '%s' %s:%u", |
2463 | rules_str(rules, cur->key.value_off), | |
2464 | rules_str(rules, rule->rule.filename_off), | |
2465 | rule->rule.filename_line); | |
912541b0 KS |
2466 | break; |
2467 | } | |
2468 | case TK_A_GOTO: | |
2469 | if (cur->key.rule_goto == 0) | |
2470 | break; | |
2471 | cur = &rules->tokens[cur->key.rule_goto]; | |
2472 | continue; | |
2473 | case TK_END: | |
d838e145 | 2474 | return 0; |
912541b0 KS |
2475 | |
2476 | case TK_M_PARENTS_MIN: | |
2477 | case TK_M_PARENTS_MAX: | |
2478 | case TK_M_MAX: | |
2479 | case TK_UNSET: | |
b4ba2fe3 | 2480 | log_device_error(dev, "Wrong type %u", cur->type); |
912541b0 KS |
2481 | goto nomatch; |
2482 | } | |
2483 | ||
2484 | cur++; | |
2485 | continue; | |
2486 | nomatch: | |
2487 | /* fast-forward to next rule */ | |
2488 | cur = rule + rule->rule.token_count; | |
912541b0 | 2489 | } |
d838e145 YW |
2490 | |
2491 | return 0; | |
6880b25d | 2492 | } |
761dfddc | 2493 | |
9a07157d | 2494 | int udev_rules_apply_static_dev_perms(UdevRules *rules) { |
912541b0 KS |
2495 | struct token *cur; |
2496 | struct token *rule; | |
2497 | uid_t uid = 0; | |
2498 | gid_t gid = 0; | |
2499 | mode_t mode = 0; | |
84b6ad70 TG |
2500 | _cleanup_strv_free_ char **tags = NULL; |
2501 | char **t; | |
2502 | FILE *f = NULL; | |
2503 | _cleanup_free_ char *path = NULL; | |
fdd21be6 | 2504 | int r; |
912541b0 | 2505 | |
67e4b385 | 2506 | if (!rules->tokens) |
84b6ad70 | 2507 | return 0; |
912541b0 KS |
2508 | |
2509 | cur = &rules->tokens[0]; | |
2510 | rule = cur; | |
2511 | for (;;) { | |
2512 | switch (cur->type) { | |
2513 | case TK_RULE: | |
2514 | /* current rule */ | |
2515 | rule = cur; | |
2516 | ||
2517 | /* skip rules without a static_node tag */ | |
2518 | if (!rule->rule.has_static_node) | |
2519 | goto next; | |
2520 | ||
2521 | uid = 0; | |
2522 | gid = 0; | |
2523 | mode = 0; | |
97b11eed | 2524 | tags = strv_free(tags); |
912541b0 KS |
2525 | break; |
2526 | case TK_A_OWNER_ID: | |
2527 | uid = cur->key.uid; | |
2528 | break; | |
2529 | case TK_A_GROUP_ID: | |
2530 | gid = cur->key.gid; | |
2531 | break; | |
2532 | case TK_A_MODE_ID: | |
2533 | mode = cur->key.mode; | |
84b6ad70 TG |
2534 | break; |
2535 | case TK_A_TAG: | |
2536 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2537 | if (r < 0) | |
2538 | goto finish; | |
2539 | ||
912541b0 KS |
2540 | break; |
2541 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2542 | char device_node[UTIL_PATH_SIZE]; |
2543 | char tags_dir[UTIL_PATH_SIZE]; | |
2544 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2545 | struct stat stats; |
2546 | ||
2547 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2548 | |
67e4b385 | 2549 | if (mode == 0 && uid == 0 && gid == 0 && !tags) |
912541b0 | 2550 | goto next; |
d6f116a7 | 2551 | |
84b6ad70 | 2552 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
76b9bdd9 | 2553 | if (stat(device_node, &stats) < 0) |
ca2bb160 KS |
2554 | break; |
2555 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2556 | break; | |
84b6ad70 | 2557 | |
d6f116a7 | 2558 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2559 | if (tags) { |
84b6ad70 TG |
2560 | STRV_FOREACH(t, tags) { |
2561 | _cleanup_free_ char *unescaped_filename = NULL; | |
2562 | ||
2563 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2564 | r = mkdir_p(tags_dir, 0755); | |
f647962d | 2565 | if (r < 0) |
8c19dc54 | 2566 | return log_error_errno(r, "Failed to create %s: %m", tags_dir); |
84b6ad70 TG |
2567 | |
2568 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2569 | ||
2570 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2571 | r = symlink(device_node, tag_symlink); | |
4a62c710 | 2572 | if (r < 0 && errno != EEXIST) |
8c19dc54 | 2573 | return log_error_errno(errno, "Failed to create symlink %s -> %s: %m", |
4a62c710 | 2574 | tag_symlink, device_node); |
84b6ad70 TG |
2575 | } |
2576 | } | |
2577 | ||
15a72200 TG |
2578 | /* don't touch the permissions if only the tags were set */ |
2579 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2580 | break; |
2581 | ||
912541b0 KS |
2582 | if (mode == 0) { |
2583 | if (gid > 0) | |
2584 | mode = 0660; | |
2585 | else | |
2586 | mode = 0600; | |
2587 | } | |
2588 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 | 2589 | r = chmod(device_node, mode); |
25f027c5 ZJS |
2590 | if (r < 0) |
2591 | return log_error_errno(errno, "Failed to chmod '%s' %#o: %m", | |
2592 | device_node, mode); | |
2593 | else | |
9f6445e3 | 2594 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2595 | } |
2596 | ||
2597 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 | 2598 | r = chown(device_node, uid, gid); |
25f027c5 ZJS |
2599 | if (r < 0) |
2600 | return log_error_errno(errno, "Failed to chown '%s' %u %u: %m", | |
2601 | device_node, uid, gid); | |
2602 | else | |
9f6445e3 | 2603 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2604 | } |
2605 | ||
84b6ad70 | 2606 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2607 | break; |
2608 | } | |
2609 | case TK_END: | |
84b6ad70 | 2610 | goto finish; |
912541b0 KS |
2611 | } |
2612 | ||
2613 | cur++; | |
2614 | continue; | |
761dfddc | 2615 | next: |
912541b0 KS |
2616 | /* fast-forward to next rule */ |
2617 | cur = rule + rule->rule.token_count; | |
2618 | continue; | |
2619 | } | |
84b6ad70 TG |
2620 | |
2621 | finish: | |
2622 | if (f) { | |
2623 | fflush(f); | |
2624 | fchmod(fileno(f), 0644); | |
2625 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
fdd21be6 ZJS |
2626 | unlink_noerrno("/run/udev/static_node-tags"); |
2627 | unlink_noerrno(path); | |
2628 | return -errno; | |
84b6ad70 | 2629 | } |
84b6ad70 TG |
2630 | } |
2631 | ||
fdd21be6 | 2632 | return 0; |
761dfddc | 2633 | } |