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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" |
29b5eb5a | 18 | #include "device-private.h" |
480ecb7d | 19 | #include "device-util.h" |
8fb3f009 | 20 | #include "dirent-util.h" |
4f5dd394 | 21 | #include "escape.h" |
3ffd4af2 | 22 | #include "fd-util.h" |
fae0f8a0 | 23 | #include "fileio.h" |
fdd21be6 | 24 | #include "fs-util.h" |
7d50b32a | 25 | #include "glob-util.h" |
5ea78a39 YW |
26 | #include "libudev-util.h" |
27 | #include "mkdir.h" | |
b4ba2fe3 | 28 | #include "parse-util.h" |
4f5dd394 | 29 | #include "path-util.h" |
88b013b2 | 30 | #include "proc-cmdline.h" |
8fcde012 | 31 | #include "stat-util.h" |
f4850a1d | 32 | #include "stdio-util.h" |
915bf0f6 | 33 | #include "strbuf.h" |
07630cea | 34 | #include "string-util.h" |
84b6ad70 | 35 | #include "strv.h" |
5ea78a39 | 36 | #include "strxcpyx.h" |
f4cf2e5b | 37 | #include "sysctl-util.h" |
07a26e42 | 38 | #include "udev-builtin.h" |
4f5dd394 | 39 | #include "udev.h" |
b1d4f8e1 | 40 | #include "user-util.h" |
07630cea | 41 | #include "util.h" |
2232cac8 | 42 | |
a1525d17 | 43 | #define PREALLOC_TOKEN 2048 |
c7521974 | 44 | |
4052400f | 45 | struct uid_gid { |
14cb109d | 46 | unsigned name_off; |
912541b0 | 47 | union { |
a1525d17 KS |
48 | uid_t uid; |
49 | gid_t gid; | |
912541b0 | 50 | }; |
4052400f KS |
51 | }; |
52 | ||
2ad8416d ZJS |
53 | static const char* const rules_dirs[] = { |
54 | "/etc/udev/rules.d", | |
55 | "/run/udev/rules.d", | |
56 | UDEVLIBEXECDIR "/rules.d", | |
4f5dd394 LP |
57 | NULL |
58 | }; | |
2ad8416d | 59 | |
9a07157d | 60 | struct UdevRules { |
97f2d76d | 61 | usec_t dirs_ts_usec; |
c4d44cba | 62 | ResolveNameTiming resolve_name_timing; |
912541b0 KS |
63 | |
64 | /* every key in the rules file becomes a token */ | |
65 | struct token *tokens; | |
14cb109d YW |
66 | unsigned token_cur; |
67 | unsigned token_max; | |
912541b0 | 68 | |
ab06eef8 | 69 | /* all key strings are copied and de-duplicated in a single continuous string buffer */ |
915bf0f6 | 70 | struct strbuf *strbuf; |
912541b0 KS |
71 | |
72 | /* during rule parsing, uid/gid lookup results are cached */ | |
73 | struct uid_gid *uids; | |
14cb109d YW |
74 | unsigned uids_cur; |
75 | unsigned uids_max; | |
912541b0 | 76 | struct uid_gid *gids; |
14cb109d YW |
77 | unsigned gids_cur; |
78 | unsigned gids_max; | |
4052400f KS |
79 | }; |
80 | ||
9a07157d | 81 | static char *rules_str(UdevRules *rules, unsigned off) { |
915bf0f6 KS |
82 | return rules->strbuf->buf + off; |
83 | } | |
84 | ||
9a07157d | 85 | static unsigned rules_add_string(UdevRules *rules, const char *s) { |
915bf0f6 KS |
86 | return strbuf_add_string(rules->strbuf, s, strlen(s)); |
87 | } | |
88 | ||
8e3ba377 | 89 | /* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */ |
b0f7409f | 90 | enum operation_type { |
912541b0 | 91 | OP_UNSET, |
b0f7409f | 92 | |
912541b0 KS |
93 | OP_MATCH, |
94 | OP_NOMATCH, | |
95 | OP_MATCH_MAX, | |
b0f7409f | 96 | |
912541b0 | 97 | OP_ADD, |
8e3ba377 | 98 | OP_REMOVE, |
912541b0 KS |
99 | OP_ASSIGN, |
100 | OP_ASSIGN_FINAL, | |
c7521974 KS |
101 | }; |
102 | ||
ac218d9c | 103 | enum string_glob_type { |
912541b0 | 104 | GL_UNSET, |
a1525d17 | 105 | GL_PLAIN, /* no special chars */ |
912541b0 | 106 | GL_GLOB, /* shell globs ?,*,[] */ |
a1525d17 KS |
107 | GL_SPLIT, /* multi-value A|B */ |
108 | GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ | |
109 | GL_SOMETHING, /* commonly used "?*" */ | |
ac218d9c KS |
110 | }; |
111 | ||
32028733 | 112 | enum string_subst_type { |
912541b0 KS |
113 | SB_UNSET, |
114 | SB_NONE, | |
115 | SB_FORMAT, | |
116 | SB_SUBSYS, | |
32028733 KS |
117 | }; |
118 | ||
154a7b84 | 119 | /* tokens of a rule are sorted/handled in this order */ |
6880b25d | 120 | enum token_type { |
912541b0 KS |
121 | TK_UNSET, |
122 | TK_RULE, | |
123 | ||
a1525d17 KS |
124 | TK_M_ACTION, /* val */ |
125 | TK_M_DEVPATH, /* val */ | |
126 | TK_M_KERNEL, /* val */ | |
127 | TK_M_DEVLINK, /* val */ | |
128 | TK_M_NAME, /* val */ | |
129 | TK_M_ENV, /* val, attr */ | |
130 | TK_M_TAG, /* val */ | |
131 | TK_M_SUBSYSTEM, /* val */ | |
132 | TK_M_DRIVER, /* val */ | |
133 | TK_M_WAITFOR, /* val */ | |
134 | TK_M_ATTR, /* val, attr */ | |
f4cf2e5b | 135 | TK_M_SYSCTL, /* val, attr */ |
912541b0 KS |
136 | |
137 | TK_M_PARENTS_MIN, | |
a1525d17 | 138 | TK_M_KERNELS, /* val */ |
912541b0 | 139 | TK_M_SUBSYSTEMS, /* val */ |
a1525d17 KS |
140 | TK_M_DRIVERS, /* val */ |
141 | TK_M_ATTRS, /* val, attr */ | |
142 | TK_M_TAGS, /* val */ | |
912541b0 KS |
143 | TK_M_PARENTS_MAX, |
144 | ||
a1525d17 | 145 | TK_M_TEST, /* val, mode_t */ |
a1525d17 KS |
146 | TK_M_PROGRAM, /* val */ |
147 | TK_M_IMPORT_FILE, /* val */ | |
148 | TK_M_IMPORT_PROG, /* val */ | |
149 | TK_M_IMPORT_BUILTIN, /* val */ | |
150 | TK_M_IMPORT_DB, /* val */ | |
151 | TK_M_IMPORT_CMDLINE, /* val */ | |
152 | TK_M_IMPORT_PARENT, /* val */ | |
153 | TK_M_RESULT, /* val */ | |
912541b0 KS |
154 | TK_M_MAX, |
155 | ||
156 | TK_A_STRING_ESCAPE_NONE, | |
157 | TK_A_STRING_ESCAPE_REPLACE, | |
158 | TK_A_DB_PERSIST, | |
a1525d17 KS |
159 | TK_A_INOTIFY_WATCH, /* int */ |
160 | TK_A_DEVLINK_PRIO, /* int */ | |
161 | TK_A_OWNER, /* val */ | |
162 | TK_A_GROUP, /* val */ | |
163 | TK_A_MODE, /* val */ | |
164 | TK_A_OWNER_ID, /* uid_t */ | |
165 | TK_A_GROUP_ID, /* gid_t */ | |
166 | TK_A_MODE_ID, /* mode_t */ | |
84b6ad70 | 167 | TK_A_TAG, /* val */ |
a1525d17 | 168 | TK_A_STATIC_NODE, /* val */ |
c26547d6 | 169 | TK_A_SECLABEL, /* val, attr */ |
a1525d17 | 170 | TK_A_ENV, /* val, attr */ |
a1525d17 KS |
171 | TK_A_NAME, /* val */ |
172 | TK_A_DEVLINK, /* val */ | |
173 | TK_A_ATTR, /* val, attr */ | |
f4cf2e5b | 174 | TK_A_SYSCTL, /* val, attr */ |
83cd6b75 KS |
175 | TK_A_RUN_BUILTIN, /* val, bool */ |
176 | TK_A_RUN_PROGRAM, /* val, bool */ | |
a1525d17 | 177 | TK_A_GOTO, /* size_t */ |
912541b0 KS |
178 | |
179 | TK_END, | |
c7521974 KS |
180 | }; |
181 | ||
3f3aa9f5 | 182 | /* we try to pack stuff in a way that we take only 12 bytes per token */ |
4052400f | 183 | struct token { |
912541b0 KS |
184 | union { |
185 | unsigned char type; /* same in rule and key */ | |
186 | struct { | |
187 | enum token_type type:8; | |
188 | bool can_set_name:1; | |
189 | bool has_static_node:1; | |
14cb109d | 190 | unsigned unused:6; |
912541b0 | 191 | unsigned short token_count; |
14cb109d | 192 | unsigned label_off; |
912541b0 KS |
193 | unsigned short filename_off; |
194 | unsigned short filename_line; | |
195 | } rule; | |
196 | struct { | |
197 | enum token_type type:8; | |
198 | enum operation_type op:8; | |
199 | enum string_glob_type glob:8; | |
200 | enum string_subst_type subst:4; | |
201 | enum string_subst_type attrsubst:4; | |
14cb109d | 202 | unsigned value_off; |
912541b0 | 203 | union { |
14cb109d YW |
204 | unsigned attr_off; |
205 | unsigned rule_goto; | |
49c603bd | 206 | mode_t mode; |
912541b0 KS |
207 | uid_t uid; |
208 | gid_t gid; | |
209 | int devlink_prio; | |
912541b0 KS |
210 | int watch; |
211 | enum udev_builtin_cmd builtin_cmd; | |
212 | }; | |
213 | } key; | |
214 | }; | |
4052400f KS |
215 | }; |
216 | ||
912541b0 | 217 | #define MAX_TK 64 |
4052400f | 218 | struct rule_tmp { |
9a07157d | 219 | UdevRules *rules; |
912541b0 KS |
220 | struct token rule; |
221 | struct token token[MAX_TK]; | |
14cb109d | 222 | unsigned token_cur; |
4052400f KS |
223 | }; |
224 | ||
20e97dd3 | 225 | #if ENABLE_DEBUG_UDEV |
9ec6e95b | 226 | static const char *operation_str(enum operation_type type) { |
912541b0 | 227 | static const char *operation_strs[] = { |
a1525d17 KS |
228 | [OP_UNSET] = "UNSET", |
229 | [OP_MATCH] = "match", | |
230 | [OP_NOMATCH] = "nomatch", | |
912541b0 KS |
231 | [OP_MATCH_MAX] = "MATCH_MAX", |
232 | ||
a1525d17 | 233 | [OP_ADD] = "add", |
8e3ba377 | 234 | [OP_REMOVE] = "remove", |
a1525d17 KS |
235 | [OP_ASSIGN] = "assign", |
236 | [OP_ASSIGN_FINAL] = "assign-final", | |
49c603bd | 237 | }; |
912541b0 KS |
238 | |
239 | return operation_strs[type]; | |
5d6a1fa6 | 240 | } |
4052400f | 241 | |
9ec6e95b | 242 | static const char *string_glob_str(enum string_glob_type type) { |
912541b0 | 243 | static const char *string_glob_strs[] = { |
a1525d17 KS |
244 | [GL_UNSET] = "UNSET", |
245 | [GL_PLAIN] = "plain", | |
246 | [GL_GLOB] = "glob", | |
247 | [GL_SPLIT] = "split", | |
248 | [GL_SPLIT_GLOB] = "split-glob", | |
249 | [GL_SOMETHING] = "split-glob", | |
912541b0 KS |
250 | }; |
251 | ||
252 | return string_glob_strs[type]; | |
5d6a1fa6 KS |
253 | } |
254 | ||
9ec6e95b | 255 | static const char *token_str(enum token_type type) { |
912541b0 | 256 | static const char *token_strs[] = { |
a1525d17 KS |
257 | [TK_UNSET] = "UNSET", |
258 | [TK_RULE] = "RULE", | |
912541b0 | 259 | |
a1525d17 | 260 | [TK_M_ACTION] = "M ACTION", |
912541b0 | 261 | [TK_M_DEVPATH] = "M DEVPATH", |
a1525d17 | 262 | [TK_M_KERNEL] = "M KERNEL", |
912541b0 | 263 | [TK_M_DEVLINK] = "M DEVLINK", |
a1525d17 KS |
264 | [TK_M_NAME] = "M NAME", |
265 | [TK_M_ENV] = "M ENV", | |
266 | [TK_M_TAG] = "M TAG", | |
267 | [TK_M_SUBSYSTEM] = "M SUBSYSTEM", | |
268 | [TK_M_DRIVER] = "M DRIVER", | |
912541b0 | 269 | [TK_M_WAITFOR] = "M WAITFOR", |
a1525d17 | 270 | [TK_M_ATTR] = "M ATTR", |
f4cf2e5b | 271 | [TK_M_SYSCTL] = "M SYSCTL", |
912541b0 | 272 | |
a1525d17 | 273 | [TK_M_PARENTS_MIN] = "M PARENTS_MIN", |
912541b0 | 274 | [TK_M_KERNELS] = "M KERNELS", |
a1525d17 | 275 | [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", |
912541b0 | 276 | [TK_M_DRIVERS] = "M DRIVERS", |
a1525d17 KS |
277 | [TK_M_ATTRS] = "M ATTRS", |
278 | [TK_M_TAGS] = "M TAGS", | |
279 | [TK_M_PARENTS_MAX] = "M PARENTS_MAX", | |
912541b0 | 280 | |
a1525d17 | 281 | [TK_M_TEST] = "M TEST", |
912541b0 | 282 | [TK_M_PROGRAM] = "M PROGRAM", |
a1525d17 KS |
283 | [TK_M_IMPORT_FILE] = "M IMPORT_FILE", |
284 | [TK_M_IMPORT_PROG] = "M IMPORT_PROG", | |
285 | [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN", | |
286 | [TK_M_IMPORT_DB] = "M IMPORT_DB", | |
287 | [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", | |
288 | [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", | |
289 | [TK_M_RESULT] = "M RESULT", | |
290 | [TK_M_MAX] = "M MAX", | |
291 | ||
292 | [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", | |
293 | [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", | |
294 | [TK_A_DB_PERSIST] = "A DB_PERSIST", | |
295 | [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", | |
296 | [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", | |
297 | [TK_A_OWNER] = "A OWNER", | |
298 | [TK_A_GROUP] = "A GROUP", | |
299 | [TK_A_MODE] = "A MODE", | |
300 | [TK_A_OWNER_ID] = "A OWNER_ID", | |
301 | [TK_A_GROUP_ID] = "A GROUP_ID", | |
302 | [TK_A_STATIC_NODE] = "A STATIC_NODE", | |
c26547d6 | 303 | [TK_A_SECLABEL] = "A SECLABEL", |
912541b0 | 304 | [TK_A_MODE_ID] = "A MODE_ID", |
a1525d17 KS |
305 | [TK_A_ENV] = "A ENV", |
306 | [TK_A_TAG] = "A ENV", | |
307 | [TK_A_NAME] = "A NAME", | |
912541b0 | 308 | [TK_A_DEVLINK] = "A DEVLINK", |
a1525d17 | 309 | [TK_A_ATTR] = "A ATTR", |
f4cf2e5b | 310 | [TK_A_SYSCTL] = "A SYSCTL", |
83cd6b75 KS |
311 | [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN", |
312 | [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM", | |
a1525d17 | 313 | [TK_A_GOTO] = "A GOTO", |
912541b0 | 314 | |
a1525d17 | 315 | [TK_END] = "END", |
912541b0 KS |
316 | }; |
317 | ||
318 | return token_strs[type]; | |
5d6a1fa6 | 319 | } |
c7521974 | 320 | |
9a07157d | 321 | static void dump_token(UdevRules *rules, struct token *token) { |
912541b0 KS |
322 | enum token_type type = token->type; |
323 | enum operation_type op = token->key.op; | |
324 | enum string_glob_type glob = token->key.glob; | |
fa394301 LR |
325 | const char *value = rules_str(rules, token->key.value_off); |
326 | const char *attr = &rules->strbuf->buf[token->key.attr_off]; | |
912541b0 KS |
327 | |
328 | switch (type) { | |
329 | case TK_RULE: | |
330 | { | |
331 | const char *tks_ptr = (char *)rules->tokens; | |
332 | const char *tk_ptr = (char *)token; | |
14cb109d | 333 | unsigned idx = (tk_ptr - tks_ptr) / sizeof(struct token); |
912541b0 | 334 | |
9f6445e3 | 335 | log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'", |
fa394301 | 336 | &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line, |
baa30fbc | 337 | idx, token->rule.token_count, |
fa394301 | 338 | &rules->strbuf->buf[token->rule.label_off]); |
912541b0 KS |
339 | break; |
340 | } | |
341 | case TK_M_ACTION: | |
342 | case TK_M_DEVPATH: | |
343 | case TK_M_KERNEL: | |
344 | case TK_M_SUBSYSTEM: | |
345 | case TK_M_DRIVER: | |
346 | case TK_M_WAITFOR: | |
347 | case TK_M_DEVLINK: | |
348 | case TK_M_NAME: | |
349 | case TK_M_KERNELS: | |
350 | case TK_M_SUBSYSTEMS: | |
351 | case TK_M_DRIVERS: | |
352 | case TK_M_TAGS: | |
353 | case TK_M_PROGRAM: | |
354 | case TK_M_IMPORT_FILE: | |
355 | case TK_M_IMPORT_PROG: | |
356 | case TK_M_IMPORT_DB: | |
357 | case TK_M_IMPORT_CMDLINE: | |
358 | case TK_M_IMPORT_PARENT: | |
359 | case TK_M_RESULT: | |
360 | case TK_A_NAME: | |
361 | case TK_A_DEVLINK: | |
362 | case TK_A_OWNER: | |
363 | case TK_A_GROUP: | |
364 | case TK_A_MODE: | |
83cd6b75 KS |
365 | case TK_A_RUN_BUILTIN: |
366 | case TK_A_RUN_PROGRAM: | |
9f6445e3 | 367 | log_debug("%s %s '%s'(%s)", |
baa30fbc | 368 | token_str(type), operation_str(op), value, string_glob_str(glob)); |
912541b0 KS |
369 | break; |
370 | case TK_M_IMPORT_BUILTIN: | |
9f6445e3 | 371 | log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value); |
912541b0 KS |
372 | break; |
373 | case TK_M_ATTR: | |
f4cf2e5b | 374 | case TK_M_SYSCTL: |
912541b0 KS |
375 | case TK_M_ATTRS: |
376 | case TK_M_ENV: | |
377 | case TK_A_ATTR: | |
f4cf2e5b | 378 | case TK_A_SYSCTL: |
912541b0 | 379 | case TK_A_ENV: |
9f6445e3 | 380 | log_debug("%s %s '%s' '%s'(%s)", |
baa30fbc | 381 | token_str(type), operation_str(op), attr, value, string_glob_str(glob)); |
912541b0 KS |
382 | break; |
383 | case TK_M_TAG: | |
384 | case TK_A_TAG: | |
9f6445e3 | 385 | log_debug("%s %s '%s'", token_str(type), operation_str(op), value); |
912541b0 KS |
386 | break; |
387 | case TK_A_STRING_ESCAPE_NONE: | |
388 | case TK_A_STRING_ESCAPE_REPLACE: | |
389 | case TK_A_DB_PERSIST: | |
9f6445e3 | 390 | log_debug("%s", token_str(type)); |
912541b0 KS |
391 | break; |
392 | case TK_M_TEST: | |
9f6445e3 | 393 | log_debug("%s %s '%s'(%s) %#o", |
baa30fbc | 394 | token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); |
912541b0 KS |
395 | break; |
396 | case TK_A_INOTIFY_WATCH: | |
9f6445e3 | 397 | log_debug("%s %u", token_str(type), token->key.watch); |
912541b0 KS |
398 | break; |
399 | case TK_A_DEVLINK_PRIO: | |
9f6445e3 | 400 | log_debug("%s %u", token_str(type), token->key.devlink_prio); |
912541b0 KS |
401 | break; |
402 | case TK_A_OWNER_ID: | |
9f6445e3 | 403 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid); |
912541b0 KS |
404 | break; |
405 | case TK_A_GROUP_ID: | |
9f6445e3 | 406 | log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid); |
912541b0 KS |
407 | break; |
408 | case TK_A_MODE_ID: | |
9f6445e3 | 409 | log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode); |
912541b0 KS |
410 | break; |
411 | case TK_A_STATIC_NODE: | |
9f6445e3 | 412 | log_debug("%s '%s'", token_str(type), value); |
912541b0 | 413 | break; |
c26547d6 | 414 | case TK_A_SECLABEL: |
9f6445e3 | 415 | log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value); |
c26547d6 | 416 | break; |
912541b0 | 417 | case TK_A_GOTO: |
9f6445e3 | 418 | log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto); |
912541b0 KS |
419 | break; |
420 | case TK_END: | |
9f6445e3 | 421 | log_debug("* %s", token_str(type)); |
912541b0 KS |
422 | break; |
423 | case TK_M_PARENTS_MIN: | |
424 | case TK_M_PARENTS_MAX: | |
425 | case TK_M_MAX: | |
426 | case TK_UNSET: | |
8c19dc54 | 427 | log_debug("Unknown token type %u", type); |
912541b0 KS |
428 | break; |
429 | } | |
4052400f | 430 | } |
154a7b84 | 431 | |
9a07157d | 432 | static void dump_rules(UdevRules *rules) { |
14cb109d | 433 | unsigned i; |
912541b0 | 434 | |
8c19dc54 | 435 | log_debug("Dumping %u (%zu bytes) tokens, %zu (%zu bytes) strings", |
baa30fbc KS |
436 | rules->token_cur, |
437 | rules->token_cur * sizeof(struct token), | |
fa394301 LR |
438 | rules->strbuf->nodes_count, |
439 | rules->strbuf->len); | |
f168c273 | 440 | for (i = 0; i < rules->token_cur; i++) |
912541b0 | 441 | dump_token(rules, &rules->tokens[i]); |
4052400f KS |
442 | } |
443 | #else | |
a1e92eee TM |
444 | static void dump_token(UdevRules *rules, struct token *token) {} |
445 | static void dump_rules(UdevRules *rules) {} | |
20e97dd3 | 446 | #endif /* ENABLE_DEBUG_UDEV */ |
c7521974 | 447 | |
9a07157d | 448 | static int add_token(UdevRules *rules, struct token *token) { |
912541b0 KS |
449 | /* grow buffer if needed */ |
450 | if (rules->token_cur+1 >= rules->token_max) { | |
451 | struct token *tokens; | |
14cb109d | 452 | unsigned add; |
912541b0 KS |
453 | |
454 | /* double the buffer size */ | |
455 | add = rules->token_max; | |
456 | if (add < 8) | |
457 | add = 8; | |
458 | ||
62d74c78 | 459 | tokens = reallocarray(rules->tokens, rules->token_max + add, sizeof(struct token)); |
67e4b385 | 460 | if (!tokens) |
912541b0 | 461 | return -1; |
912541b0 KS |
462 | rules->tokens = tokens; |
463 | rules->token_max += add; | |
464 | } | |
465 | memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token)); | |
466 | rules->token_cur++; | |
467 | return 0; | |
c7521974 | 468 | } |
a27cd06c | 469 | |
b4ba2fe3 | 470 | static void log_unknown_owner(sd_device *dev, int error, const char *entity, const char *owner) { |
2da03cbf | 471 | if (IN_SET(abs(error), ENOENT, ESRCH)) |
b4ba2fe3 | 472 | log_device_error(dev, "Specified %s '%s' unknown", entity, owner); |
2da03cbf | 473 | else |
b4ba2fe3 | 474 | log_device_error_errno(dev, error, "Failed to resolve %s '%s': %m", entity, owner); |
2da03cbf ZJS |
475 | } |
476 | ||
9a07157d | 477 | static uid_t add_uid(UdevRules *rules, const char *owner) { |
14cb109d | 478 | unsigned i; |
23bf8dd7 | 479 | uid_t uid = 0; |
14cb109d | 480 | unsigned off; |
23bf8dd7 | 481 | int r; |
912541b0 KS |
482 | |
483 | /* lookup, if we know it already */ | |
484 | for (i = 0; i < rules->uids_cur; i++) { | |
485 | off = rules->uids[i].name_off; | |
915bf0f6 | 486 | if (streq(rules_str(rules, off), owner)) { |
912541b0 | 487 | uid = rules->uids[i].uid; |
912541b0 KS |
488 | return uid; |
489 | } | |
490 | } | |
fafff8f1 | 491 | r = get_user_creds(&owner, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
2da03cbf | 492 | if (r < 0) |
b4ba2fe3 | 493 | log_unknown_owner(NULL, r, "user", owner); |
912541b0 KS |
494 | |
495 | /* grow buffer if needed */ | |
496 | if (rules->uids_cur+1 >= rules->uids_max) { | |
497 | struct uid_gid *uids; | |
14cb109d | 498 | unsigned add; |
912541b0 KS |
499 | |
500 | /* double the buffer size */ | |
501 | add = rules->uids_max; | |
502 | if (add < 1) | |
503 | add = 8; | |
504 | ||
62d74c78 | 505 | uids = reallocarray(rules->uids, rules->uids_max + add, sizeof(struct uid_gid)); |
67e4b385 | 506 | if (!uids) |
912541b0 | 507 | return uid; |
912541b0 KS |
508 | rules->uids = uids; |
509 | rules->uids_max += add; | |
510 | } | |
511 | rules->uids[rules->uids_cur].uid = uid; | |
915bf0f6 | 512 | off = rules_add_string(rules, owner); |
912541b0 KS |
513 | if (off <= 0) |
514 | return uid; | |
515 | rules->uids[rules->uids_cur].name_off = off; | |
516 | rules->uids_cur++; | |
517 | return uid; | |
154a7b84 KS |
518 | } |
519 | ||
9a07157d | 520 | static gid_t add_gid(UdevRules *rules, const char *group) { |
14cb109d | 521 | unsigned i; |
23bf8dd7 | 522 | gid_t gid = 0; |
14cb109d | 523 | unsigned off; |
23bf8dd7 | 524 | int r; |
912541b0 KS |
525 | |
526 | /* lookup, if we know it already */ | |
527 | for (i = 0; i < rules->gids_cur; i++) { | |
528 | off = rules->gids[i].name_off; | |
915bf0f6 | 529 | if (streq(rules_str(rules, off), group)) { |
912541b0 | 530 | gid = rules->gids[i].gid; |
912541b0 KS |
531 | return gid; |
532 | } | |
533 | } | |
fafff8f1 | 534 | r = get_group_creds(&group, &gid, USER_CREDS_ALLOW_MISSING); |
2da03cbf | 535 | if (r < 0) |
b4ba2fe3 | 536 | log_unknown_owner(NULL, r, "group", group); |
912541b0 KS |
537 | |
538 | /* grow buffer if needed */ | |
539 | if (rules->gids_cur+1 >= rules->gids_max) { | |
540 | struct uid_gid *gids; | |
14cb109d | 541 | unsigned add; |
912541b0 KS |
542 | |
543 | /* double the buffer size */ | |
544 | add = rules->gids_max; | |
545 | if (add < 1) | |
546 | add = 8; | |
547 | ||
62d74c78 | 548 | gids = reallocarray(rules->gids, rules->gids_max + add, sizeof(struct uid_gid)); |
67e4b385 | 549 | if (!gids) |
912541b0 | 550 | return gid; |
912541b0 KS |
551 | rules->gids = gids; |
552 | rules->gids_max += add; | |
553 | } | |
554 | rules->gids[rules->gids_cur].gid = gid; | |
915bf0f6 | 555 | off = rules_add_string(rules, group); |
912541b0 KS |
556 | if (off <= 0) |
557 | return gid; | |
558 | rules->gids[rules->gids_cur].name_off = off; | |
559 | rules->gids_cur++; | |
560 | return gid; | |
154a7b84 KS |
561 | } |
562 | ||
29b5eb5a | 563 | static int import_property_from_string(sd_device *dev, char *line) { |
912541b0 KS |
564 | char *key; |
565 | char *val; | |
566 | size_t len; | |
567 | ||
568 | /* find key */ | |
569 | key = line; | |
570 | while (isspace(key[0])) | |
571 | key++; | |
572 | ||
573 | /* comment or empty line */ | |
4c701096 | 574 | if (IN_SET(key[0], '#', '\0')) |
29b5eb5a | 575 | return 0; |
912541b0 KS |
576 | |
577 | /* split key/value */ | |
578 | val = strchr(key, '='); | |
29b5eb5a YW |
579 | if (!val) |
580 | return -EINVAL; | |
912541b0 KS |
581 | val[0] = '\0'; |
582 | val++; | |
583 | ||
584 | /* find value */ | |
585 | while (isspace(val[0])) | |
586 | val++; | |
587 | ||
588 | /* terminate key */ | |
589 | len = strlen(key); | |
590 | if (len == 0) | |
29b5eb5a | 591 | return -EINVAL; |
912541b0 KS |
592 | while (isspace(key[len-1])) |
593 | len--; | |
594 | key[len] = '\0'; | |
595 | ||
596 | /* terminate value */ | |
597 | len = strlen(val); | |
598 | if (len == 0) | |
29b5eb5a | 599 | return -EINVAL; |
912541b0 KS |
600 | while (isspace(val[len-1])) |
601 | len--; | |
602 | val[len] = '\0'; | |
603 | ||
604 | if (len == 0) | |
29b5eb5a | 605 | return -EINVAL; |
912541b0 KS |
606 | |
607 | /* unquote */ | |
4c701096 | 608 | if (IN_SET(val[0], '"', '\'')) { |
baaa35ad ZJS |
609 | if (len == 1 || val[len-1] != val[0]) |
610 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), | |
8c19dc54 | 611 | "Inconsistent quoting: '%s', skip", |
baaa35ad | 612 | line); |
912541b0 KS |
613 | val[len-1] = '\0'; |
614 | val++; | |
615 | } | |
616 | ||
29b5eb5a | 617 | return device_add_property(dev, key, val); |
be4bedd1 KS |
618 | } |
619 | ||
13c7b75f | 620 | static int import_file_into_properties(sd_device *dev, const char *filename) { |
fae0f8a0 LP |
621 | _cleanup_fclose_ FILE *f = NULL; |
622 | int r; | |
912541b0 | 623 | |
47ef94ac | 624 | f = fopen(filename, "re"); |
fae0f8a0 LP |
625 | if (!f) |
626 | return -errno; | |
627 | ||
628 | for (;;) { | |
629 | _cleanup_free_ char *line = NULL; | |
630 | ||
631 | r = read_line(f, LONG_LINE_MAX, &line); | |
632 | if (r < 0) | |
633 | return r; | |
634 | if (r == 0) | |
635 | break; | |
636 | ||
13c7b75f | 637 | (void) import_property_from_string(dev, line); |
fae0f8a0 LP |
638 | } |
639 | ||
912541b0 | 640 | return 0; |
bd0ed2ff KS |
641 | } |
642 | ||
2e088715 | 643 | static int import_program_into_properties(UdevEvent *event, |
dd5eddd2 | 644 | usec_t timeout_usec, |
8314de1d | 645 | const char *program) { |
912541b0 KS |
646 | char result[UTIL_LINE_SIZE]; |
647 | char *line; | |
a7521142 | 648 | int r; |
912541b0 | 649 | |
a7521142 ZJS |
650 | r = udev_event_spawn(event, timeout_usec, false, program, result, sizeof result); |
651 | if (r < 0) | |
652 | return r; | |
653 | if (r > 0) | |
654 | return -EIO; | |
912541b0 KS |
655 | |
656 | line = result; | |
67e4b385 | 657 | while (line) { |
912541b0 KS |
658 | char *pos; |
659 | ||
660 | pos = strchr(line, '\n'); | |
67e4b385 | 661 | if (pos) { |
912541b0 KS |
662 | pos[0] = '\0'; |
663 | pos = &pos[1]; | |
664 | } | |
cf28ad46 | 665 | (void) import_property_from_string(event->dev, line); |
912541b0 KS |
666 | line = pos; |
667 | } | |
668 | return 0; | |
319c6700 KS |
669 | } |
670 | ||
1ce7fecb YW |
671 | static int import_parent_into_properties(sd_device *dev, const char *filter) { |
672 | const char *key, *val; | |
673 | sd_device *parent; | |
674 | int r; | |
912541b0 | 675 | |
3b64e4d4 TG |
676 | assert(dev); |
677 | assert(filter); | |
678 | ||
1ce7fecb YW |
679 | r = sd_device_get_parent(dev, &parent); |
680 | if (r < 0) | |
681 | return r; | |
912541b0 | 682 | |
1ce7fecb | 683 | FOREACH_DEVICE_PROPERTY(parent, key, val) |
ece174c5 | 684 | if (fnmatch(filter, key, 0) == 0) |
1ce7fecb | 685 | device_add_property(dev, key, val); |
912541b0 | 686 | return 0; |
e2ecb34f KS |
687 | } |
688 | ||
f4850a1d ZJS |
689 | static void attr_subst_subdir(char *attr, size_t len) { |
690 | const char *pos, *tail, *path; | |
691 | _cleanup_closedir_ DIR *dir = NULL; | |
692 | struct dirent *dent; | |
693 | ||
694 | pos = strstr(attr, "/*/"); | |
695 | if (!pos) | |
696 | return; | |
697 | ||
698 | tail = pos + 2; | |
699 | path = strndupa(attr, pos - attr + 1); /* include slash at end */ | |
700 | dir = opendir(path); | |
67e4b385 | 701 | if (!dir) |
f4850a1d ZJS |
702 | return; |
703 | ||
8fb3f009 | 704 | FOREACH_DIRENT_ALL(dent, dir, break) |
f4850a1d | 705 | if (dent->d_name[0] != '.') { |
916a8d43 | 706 | char n[strlen(dent->d_name) + strlen(tail) + 1]; |
f4850a1d | 707 | |
916a8d43 ZJS |
708 | strscpyl(n, sizeof n, dent->d_name, tail, NULL); |
709 | if (faccessat(dirfd(dir), n, F_OK, 0) == 0) { | |
f4850a1d ZJS |
710 | strscpyl(attr, len, path, n, NULL); |
711 | break; | |
912541b0 | 712 | } |
912541b0 | 713 | } |
0ea5e96e KS |
714 | } |
715 | ||
2024ed61 | 716 | static int get_key(char **line, char **key, enum operation_type *op, char **value) { |
912541b0 KS |
717 | char *linepos; |
718 | char *temp; | |
7e760b79 | 719 | unsigned i, j; |
912541b0 KS |
720 | |
721 | linepos = *line; | |
67e4b385 | 722 | if (!linepos || linepos[0] == '\0') |
912541b0 KS |
723 | return -1; |
724 | ||
725 | /* skip whitespace */ | |
726 | while (isspace(linepos[0]) || linepos[0] == ',') | |
727 | linepos++; | |
728 | ||
729 | /* get the key */ | |
730 | if (linepos[0] == '\0') | |
731 | return -1; | |
732 | *key = linepos; | |
733 | ||
734 | for (;;) { | |
735 | linepos++; | |
736 | if (linepos[0] == '\0') | |
737 | return -1; | |
738 | if (isspace(linepos[0])) | |
739 | break; | |
740 | if (linepos[0] == '=') | |
741 | break; | |
4c701096 | 742 | if (IN_SET(linepos[0], '+', '-', '!', ':')) |
912541b0 KS |
743 | if (linepos[1] == '=') |
744 | break; | |
745 | } | |
746 | ||
747 | /* remember end of key */ | |
748 | temp = linepos; | |
749 | ||
750 | /* skip whitespace after key */ | |
751 | while (isspace(linepos[0])) | |
752 | linepos++; | |
753 | if (linepos[0] == '\0') | |
754 | return -1; | |
755 | ||
756 | /* get operation type */ | |
757 | if (linepos[0] == '=' && linepos[1] == '=') { | |
758 | *op = OP_MATCH; | |
759 | linepos += 2; | |
760 | } else if (linepos[0] == '!' && linepos[1] == '=') { | |
761 | *op = OP_NOMATCH; | |
762 | linepos += 2; | |
763 | } else if (linepos[0] == '+' && linepos[1] == '=') { | |
764 | *op = OP_ADD; | |
765 | linepos += 2; | |
8e3ba377 DH |
766 | } else if (linepos[0] == '-' && linepos[1] == '=') { |
767 | *op = OP_REMOVE; | |
768 | linepos += 2; | |
912541b0 KS |
769 | } else if (linepos[0] == '=') { |
770 | *op = OP_ASSIGN; | |
771 | linepos++; | |
772 | } else if (linepos[0] == ':' && linepos[1] == '=') { | |
773 | *op = OP_ASSIGN_FINAL; | |
774 | linepos += 2; | |
775 | } else | |
776 | return -1; | |
777 | ||
778 | /* terminate key */ | |
779 | temp[0] = '\0'; | |
780 | ||
781 | /* skip whitespace after operator */ | |
782 | while (isspace(linepos[0])) | |
783 | linepos++; | |
784 | if (linepos[0] == '\0') | |
785 | return -1; | |
786 | ||
787 | /* get the value */ | |
788 | if (linepos[0] == '"') | |
789 | linepos++; | |
790 | else | |
791 | return -1; | |
792 | *value = linepos; | |
793 | ||
794 | /* terminate */ | |
7e760b79 FB |
795 | for (i = 0, j = 0; ; i++, j++) { |
796 | ||
797 | if (linepos[i] == '"') | |
798 | break; | |
799 | ||
800 | if (linepos[i] == '\0') | |
801 | return -1; | |
802 | ||
803 | /* double quotes can be escaped */ | |
804 | if (linepos[i] == '\\') | |
805 | if (linepos[i+1] == '"') | |
806 | i++; | |
807 | ||
808 | linepos[j] = linepos[i]; | |
809 | } | |
810 | linepos[j] = '\0'; | |
912541b0 KS |
811 | |
812 | /* move line to next key */ | |
7e760b79 | 813 | *line = linepos + i + 1; |
912541b0 | 814 | return 0; |
6880b25d | 815 | } |
95776dc6 | 816 | |
6880b25d | 817 | /* extract possible KEY{attr} */ |
2024ed61 | 818 | static const char *get_key_attribute(char *str) { |
912541b0 KS |
819 | char *pos; |
820 | char *attr; | |
821 | ||
822 | attr = strchr(str, '{'); | |
67e4b385 | 823 | if (attr) { |
912541b0 KS |
824 | attr++; |
825 | pos = strchr(attr, '}'); | |
67e4b385 | 826 | if (!pos) { |
25f027c5 | 827 | log_error("Missing closing brace for format"); |
912541b0 KS |
828 | return NULL; |
829 | } | |
830 | pos[0] = '\0'; | |
912541b0 KS |
831 | return attr; |
832 | } | |
833 | return NULL; | |
6880b25d | 834 | } |
95776dc6 | 835 | |
19a8e656 ZJS |
836 | static void rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, |
837 | enum operation_type op, | |
838 | const char *value, const void *data) { | |
839 | struct token *token = rule_tmp->token + rule_tmp->token_cur; | |
912541b0 KS |
840 | const char *attr = NULL; |
841 | ||
19a8e656 | 842 | assert(rule_tmp->token_cur < ELEMENTSOF(rule_tmp->token)); |
29804cc1 | 843 | memzero(token, sizeof(struct token)); |
912541b0 KS |
844 | |
845 | switch (type) { | |
846 | case TK_M_ACTION: | |
847 | case TK_M_DEVPATH: | |
848 | case TK_M_KERNEL: | |
849 | case TK_M_SUBSYSTEM: | |
850 | case TK_M_DRIVER: | |
851 | case TK_M_WAITFOR: | |
852 | case TK_M_DEVLINK: | |
853 | case TK_M_NAME: | |
854 | case TK_M_KERNELS: | |
855 | case TK_M_SUBSYSTEMS: | |
856 | case TK_M_DRIVERS: | |
857 | case TK_M_TAGS: | |
858 | case TK_M_PROGRAM: | |
859 | case TK_M_IMPORT_FILE: | |
860 | case TK_M_IMPORT_PROG: | |
861 | case TK_M_IMPORT_DB: | |
862 | case TK_M_IMPORT_CMDLINE: | |
863 | case TK_M_IMPORT_PARENT: | |
864 | case TK_M_RESULT: | |
865 | case TK_A_OWNER: | |
866 | case TK_A_GROUP: | |
867 | case TK_A_MODE: | |
8a173387 | 868 | case TK_A_DEVLINK: |
912541b0 KS |
869 | case TK_A_NAME: |
870 | case TK_A_GOTO: | |
871 | case TK_M_TAG: | |
872 | case TK_A_TAG: | |
d6f116a7 | 873 | case TK_A_STATIC_NODE: |
915bf0f6 | 874 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
875 | break; |
876 | case TK_M_IMPORT_BUILTIN: | |
915bf0f6 | 877 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
878 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
879 | break; | |
880 | case TK_M_ENV: | |
881 | case TK_M_ATTR: | |
f4cf2e5b | 882 | case TK_M_SYSCTL: |
912541b0 KS |
883 | case TK_M_ATTRS: |
884 | case TK_A_ATTR: | |
f4cf2e5b | 885 | case TK_A_SYSCTL: |
912541b0 | 886 | case TK_A_ENV: |
c26547d6 | 887 | case TK_A_SECLABEL: |
912541b0 | 888 | attr = data; |
915bf0f6 KS |
889 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
890 | token->key.attr_off = rules_add_string(rule_tmp->rules, attr); | |
912541b0 | 891 | break; |
912541b0 | 892 | case TK_M_TEST: |
915bf0f6 | 893 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
67e4b385 | 894 | if (data) |
912541b0 KS |
895 | token->key.mode = *(mode_t *)data; |
896 | break; | |
897 | case TK_A_STRING_ESCAPE_NONE: | |
898 | case TK_A_STRING_ESCAPE_REPLACE: | |
899 | case TK_A_DB_PERSIST: | |
900 | break; | |
83cd6b75 | 901 | case TK_A_RUN_BUILTIN: |
83cd6b75 | 902 | case TK_A_RUN_PROGRAM: |
4590cfe4 | 903 | token->key.builtin_cmd = *(enum udev_builtin_cmd *)data; |
915bf0f6 | 904 | token->key.value_off = rules_add_string(rule_tmp->rules, value); |
912541b0 KS |
905 | break; |
906 | case TK_A_INOTIFY_WATCH: | |
907 | case TK_A_DEVLINK_PRIO: | |
908 | token->key.devlink_prio = *(int *)data; | |
909 | break; | |
910 | case TK_A_OWNER_ID: | |
911 | token->key.uid = *(uid_t *)data; | |
912 | break; | |
913 | case TK_A_GROUP_ID: | |
914 | token->key.gid = *(gid_t *)data; | |
915 | break; | |
916 | case TK_A_MODE_ID: | |
917 | token->key.mode = *(mode_t *)data; | |
918 | break; | |
912541b0 KS |
919 | case TK_RULE: |
920 | case TK_M_PARENTS_MIN: | |
921 | case TK_M_PARENTS_MAX: | |
922 | case TK_M_MAX: | |
923 | case TK_END: | |
924 | case TK_UNSET: | |
19a8e656 | 925 | assert_not_reached("wrong type"); |
912541b0 KS |
926 | } |
927 | ||
67e4b385 | 928 | if (value && type < TK_M_MAX) { |
912541b0 KS |
929 | /* check if we need to split or call fnmatch() while matching rules */ |
930 | enum string_glob_type glob; | |
67e4b385 | 931 | bool has_split, has_glob; |
912541b0 | 932 | |
67e4b385 | 933 | has_split = strchr(value, '|'); |
e3e0314b | 934 | has_glob = string_is_glob(value); |
67e4b385 | 935 | if (has_split && has_glob) |
912541b0 | 936 | glob = GL_SPLIT_GLOB; |
67e4b385 | 937 | else if (has_split) |
912541b0 | 938 | glob = GL_SPLIT; |
67e4b385 | 939 | else if (has_glob) { |
33502ffe | 940 | if (streq(value, "?*")) |
912541b0 KS |
941 | glob = GL_SOMETHING; |
942 | else | |
943 | glob = GL_GLOB; | |
67e4b385 | 944 | } else |
912541b0 | 945 | glob = GL_PLAIN; |
67e4b385 | 946 | |
912541b0 KS |
947 | token->key.glob = glob; |
948 | } | |
949 | ||
67e4b385 | 950 | if (value && type > TK_M_MAX) { |
912541b0 KS |
951 | /* check if assigned value has substitution chars */ |
952 | if (value[0] == '[') | |
953 | token->key.subst = SB_SUBSYS; | |
67e4b385 | 954 | else if (strchr(value, '%') || strchr(value, '$')) |
912541b0 KS |
955 | token->key.subst = SB_FORMAT; |
956 | else | |
957 | token->key.subst = SB_NONE; | |
958 | } | |
959 | ||
67e4b385 | 960 | if (attr) { |
d6f116a7 | 961 | /* check if property/attribute name has substitution chars */ |
912541b0 KS |
962 | if (attr[0] == '[') |
963 | token->key.attrsubst = SB_SUBSYS; | |
67e4b385 | 964 | else if (strchr(attr, '%') || strchr(attr, '$')) |
912541b0 KS |
965 | token->key.attrsubst = SB_FORMAT; |
966 | else | |
967 | token->key.attrsubst = SB_NONE; | |
968 | } | |
969 | ||
970 | token->key.type = type; | |
971 | token->key.op = op; | |
972 | rule_tmp->token_cur++; | |
6880b25d | 973 | } |
e57e7bc1 | 974 | |
9a07157d | 975 | static int sort_token(UdevRules *rules, struct rule_tmp *rule_tmp) { |
14cb109d YW |
976 | unsigned i; |
977 | unsigned start = 0; | |
978 | unsigned end = rule_tmp->token_cur; | |
912541b0 KS |
979 | |
980 | for (i = 0; i < rule_tmp->token_cur; i++) { | |
981 | enum token_type next_val = TK_UNSET; | |
14cb109d YW |
982 | unsigned next_idx = 0; |
983 | unsigned j; | |
912541b0 KS |
984 | |
985 | /* find smallest value */ | |
986 | for (j = start; j < end; j++) { | |
987 | if (rule_tmp->token[j].type == TK_UNSET) | |
988 | continue; | |
989 | if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) { | |
990 | next_val = rule_tmp->token[j].type; | |
991 | next_idx = j; | |
992 | } | |
993 | } | |
994 | ||
995 | /* add token and mark done */ | |
996 | if (add_token(rules, &rule_tmp->token[next_idx]) != 0) | |
997 | return -1; | |
998 | rule_tmp->token[next_idx].type = TK_UNSET; | |
999 | ||
1000 | /* shrink range */ | |
1001 | if (next_idx == start) | |
1002 | start++; | |
1003 | if (next_idx+1 == end) | |
1004 | end--; | |
1005 | } | |
1006 | return 0; | |
724257d9 GKH |
1007 | } |
1008 | ||
8c19dc54 YW |
1009 | #define LOG_RULE_FULL(level, fmt, ...) log_full(level, "%s:%u: " fmt, filename, lineno, ##__VA_ARGS__) |
1010 | #define LOG_RULE_ERROR(fmt, ...) LOG_RULE_FULL(LOG_ERR, fmt, ##__VA_ARGS__) | |
1011 | #define LOG_RULE_WARNING(fmt, ...) LOG_RULE_FULL(LOG_WARNING, fmt, ##__VA_ARGS__) | |
1012 | #define LOG_RULE_DEBUG(fmt, ...) LOG_RULE_FULL(LOG_DEBUG, fmt, ##__VA_ARGS__) | |
19a8e656 ZJS |
1013 | #define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; } |
1014 | ||
9a07157d | 1015 | static void add_rule(UdevRules *rules, char *line, |
14cb109d | 1016 | const char *filename, unsigned filename_off, unsigned lineno) { |
912541b0 | 1017 | char *linepos; |
04a9d3a0 | 1018 | const char *attr; |
84198c18 TG |
1019 | struct rule_tmp rule_tmp = { |
1020 | .rules = rules, | |
1021 | .rule.type = TK_RULE, | |
1022 | }; | |
912541b0 | 1023 | |
775f8b3c KS |
1024 | /* the offset in the rule is limited to unsigned short */ |
1025 | if (filename_off < USHRT_MAX) | |
1026 | rule_tmp.rule.rule.filename_off = filename_off; | |
912541b0 KS |
1027 | rule_tmp.rule.rule.filename_line = lineno; |
1028 | ||
1029 | linepos = line; | |
1030 | for (;;) { | |
1031 | char *key; | |
1032 | char *value; | |
1033 | enum operation_type op; | |
1034 | ||
2024ed61 | 1035 | if (get_key(&linepos, &key, &op, &value) != 0) { |
3cf0f8f7 DR |
1036 | /* Avoid erroring on trailing whitespace. This is probably rare |
1037 | * so save the work for the error case instead of always trying | |
1038 | * to strip the trailing whitespace with strstrip(). */ | |
1039 | while (isblank(*linepos)) | |
1040 | linepos++; | |
1041 | ||
e736cf35 DR |
1042 | /* If we aren't at the end of the line, this is a parsing error. |
1043 | * Make a best effort to describe where the problem is. */ | |
2783fe06 | 1044 | if (!strchr(NEWLINE, *linepos)) { |
6501b52d | 1045 | char buf[2] = {*linepos}; |
1291bc89 ZJS |
1046 | _cleanup_free_ char *tmp; |
1047 | ||
1048 | tmp = cescape(buf); | |
8c19dc54 | 1049 | LOG_RULE_ERROR("Invalid key/value pair, starting at character %tu ('%s')", linepos - line + 1, tmp); |
6501b52d | 1050 | if (*linepos == '#') |
8c19dc54 | 1051 | LOG_RULE_ERROR("Hint: comments can only start at beginning of line"); |
1291bc89 | 1052 | } |
912541b0 | 1053 | break; |
e736cf35 | 1054 | } |
912541b0 | 1055 | |
19a8e656 | 1056 | if (rule_tmp.token_cur >= ELEMENTSOF(rule_tmp.token)) |
8c19dc54 | 1057 | LOG_AND_RETURN("Temporary rule array too small, aborting event processing with %u items", rule_tmp.token_cur); |
19a8e656 | 1058 | |
33502ffe | 1059 | if (streq(key, "ACTION")) { |
19a8e656 | 1060 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1061 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1062 | |
912541b0 | 1063 | rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); |
912541b0 | 1064 | |
99f16bb8 | 1065 | } else if (streq(key, "DEVPATH")) { |
19a8e656 | 1066 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1067 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1068 | |
912541b0 | 1069 | rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); |
912541b0 | 1070 | |
99f16bb8 | 1071 | } else if (streq(key, "KERNEL")) { |
19a8e656 | 1072 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1073 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1074 | |
912541b0 | 1075 | rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); |
912541b0 | 1076 | |
99f16bb8 | 1077 | } else if (streq(key, "SUBSYSTEM")) { |
19a8e656 | 1078 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1079 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1080 | |
912541b0 | 1081 | /* bus, class, subsystem events should all be the same */ |
99f16bb8 ZJS |
1082 | if (STR_IN_SET(value, "subsystem", "bus", "class")) { |
1083 | if (!streq(value, "subsystem")) | |
19a8e656 ZJS |
1084 | LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value); |
1085 | ||
912541b0 KS |
1086 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); |
1087 | } else | |
1088 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); | |
912541b0 | 1089 | |
99f16bb8 | 1090 | } else if (streq(key, "DRIVER")) { |
19a8e656 | 1091 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1092 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1093 | |
912541b0 | 1094 | rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); |
912541b0 | 1095 | |
99f16bb8 | 1096 | } else if (startswith(key, "ATTR{")) { |
2024ed61 | 1097 | attr = get_key_attribute(key + STRLEN("ATTR")); |
67e4b385 | 1098 | if (!attr) |
8c19dc54 | 1099 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTR"); |
19a8e656 ZJS |
1100 | |
1101 | if (op == OP_REMOVE) | |
8c19dc54 | 1102 | LOG_AND_RETURN("Invalid %s operation", "ATTR"); |
19a8e656 | 1103 | |
f4cf2e5b | 1104 | if (op < OP_MATCH_MAX) |
912541b0 | 1105 | rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); |
f4cf2e5b | 1106 | else |
912541b0 | 1107 | rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); |
f4cf2e5b | 1108 | |
99f16bb8 | 1109 | } else if (startswith(key, "SYSCTL{")) { |
2024ed61 | 1110 | attr = get_key_attribute(key + STRLEN("SYSCTL")); |
67e4b385 | 1111 | if (!attr) |
8c19dc54 | 1112 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTR"); |
19a8e656 ZJS |
1113 | |
1114 | if (op == OP_REMOVE) | |
8c19dc54 | 1115 | LOG_AND_RETURN("Invalid %s operation", "ATTR"); |
19a8e656 | 1116 | |
f4cf2e5b KS |
1117 | if (op < OP_MATCH_MAX) |
1118 | rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr); | |
1119 | else | |
1120 | rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr); | |
912541b0 | 1121 | |
99f16bb8 | 1122 | } else if (startswith(key, "SECLABEL{")) { |
2024ed61 | 1123 | attr = get_key_attribute(key + STRLEN("SECLABEL")); |
67e4b385 | 1124 | if (!attr) |
8c19dc54 | 1125 | LOG_AND_RETURN("Failed to parse %s attribute", "SECLABEL"); |
19a8e656 ZJS |
1126 | |
1127 | if (op == OP_REMOVE) | |
8c19dc54 | 1128 | LOG_AND_RETURN("Invalid %s operation", "SECLABEL"); |
c26547d6 KS |
1129 | |
1130 | rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr); | |
c26547d6 | 1131 | |
99f16bb8 | 1132 | } else if (streq(key, "KERNELS")) { |
19a8e656 | 1133 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1134 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1135 | |
912541b0 | 1136 | rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); |
912541b0 | 1137 | |
99f16bb8 | 1138 | } else if (streq(key, "SUBSYSTEMS")) { |
19a8e656 | 1139 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1140 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1141 | |
912541b0 | 1142 | rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); |
912541b0 | 1143 | |
99f16bb8 | 1144 | } else if (streq(key, "DRIVERS")) { |
19a8e656 | 1145 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1146 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1147 | |
912541b0 | 1148 | rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); |
912541b0 | 1149 | |
99f16bb8 | 1150 | } else if (startswith(key, "ATTRS{")) { |
19a8e656 | 1151 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1152 | LOG_AND_RETURN("Invalid %s operation", "ATTRS"); |
19a8e656 | 1153 | |
2024ed61 | 1154 | attr = get_key_attribute(key + STRLEN("ATTRS")); |
67e4b385 | 1155 | if (!attr) |
8c19dc54 | 1156 | LOG_AND_RETURN("Failed to parse %s attribute", "ATTRS"); |
19a8e656 | 1157 | |
33502ffe | 1158 | if (startswith(attr, "device/")) |
19a8e656 | 1159 | LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix"); |
67e4b385 | 1160 | if (strstr(attr, "../")) |
8c19dc54 | 1161 | LOG_RULE_WARNING("Direct reference to parent sysfs directory, may break in future kernels; please fix"); |
912541b0 | 1162 | rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); |
912541b0 | 1163 | |
99f16bb8 | 1164 | } else if (streq(key, "TAGS")) { |
19a8e656 | 1165 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1166 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1167 | |
912541b0 | 1168 | rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL); |
912541b0 | 1169 | |
99f16bb8 | 1170 | } else if (startswith(key, "ENV{")) { |
2024ed61 | 1171 | attr = get_key_attribute(key + STRLEN("ENV")); |
67e4b385 | 1172 | if (!attr) |
8c19dc54 | 1173 | LOG_AND_RETURN("Failed to parse %s attribute", "ENV"); |
19a8e656 ZJS |
1174 | |
1175 | if (op == OP_REMOVE) | |
8c19dc54 | 1176 | LOG_AND_RETURN("Invalid %s operation", "ENV"); |
19a8e656 ZJS |
1177 | |
1178 | if (op < OP_MATCH_MAX) | |
1179 | rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr); | |
1180 | else { | |
99f16bb8 ZJS |
1181 | if (STR_IN_SET(attr, |
1182 | "ACTION", | |
1183 | "SUBSYSTEM", | |
1184 | "DEVTYPE", | |
1185 | "MAJOR", | |
1186 | "MINOR", | |
1187 | "DRIVER", | |
1188 | "IFINDEX", | |
1189 | "DEVNAME", | |
1190 | "DEVLINKS", | |
1191 | "DEVPATH", | |
19a8e656 | 1192 | "TAGS")) |
8c19dc54 | 1193 | LOG_AND_RETURN("Invalid ENV attribute, '%s' cannot be set", attr); |
19a8e656 ZJS |
1194 | |
1195 | rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr); | |
912541b0 | 1196 | } |
912541b0 | 1197 | |
99f16bb8 | 1198 | } else if (streq(key, "TAG")) { |
912541b0 KS |
1199 | if (op < OP_MATCH_MAX) |
1200 | rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); | |
1201 | else | |
1202 | rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); | |
912541b0 | 1203 | |
99f16bb8 | 1204 | } else if (streq(key, "PROGRAM")) { |
19a8e656 | 1205 | if (op == OP_REMOVE) |
8c19dc54 | 1206 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1207 | |
912541b0 | 1208 | rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); |
912541b0 | 1209 | |
99f16bb8 | 1210 | } else if (streq(key, "RESULT")) { |
19a8e656 | 1211 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1212 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1213 | |
912541b0 | 1214 | rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); |
912541b0 | 1215 | |
99f16bb8 | 1216 | } else if (startswith(key, "IMPORT")) { |
2024ed61 | 1217 | attr = get_key_attribute(key + STRLEN("IMPORT")); |
67e4b385 | 1218 | if (!attr) { |
8c19dc54 | 1219 | LOG_RULE_WARNING("Ignoring IMPORT{} with missing type"); |
912541b0 KS |
1220 | continue; |
1221 | } | |
19a8e656 | 1222 | if (op == OP_REMOVE) |
8c19dc54 | 1223 | LOG_AND_RETURN("Invalid %s operation", "IMPORT"); |
19a8e656 | 1224 | |
33502ffe | 1225 | if (streq(attr, "program")) { |
912541b0 KS |
1226 | /* find known built-in command */ |
1227 | if (value[0] != '/') { | |
19a8e656 | 1228 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1229 | |
c45b369d | 1230 | if (cmd >= 0) { |
19a8e656 | 1231 | LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value); |
912541b0 KS |
1232 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1233 | continue; | |
1234 | } | |
1235 | } | |
912541b0 | 1236 | rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); |
33502ffe | 1237 | } else if (streq(attr, "builtin")) { |
19a8e656 | 1238 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
912541b0 | 1239 | |
c45b369d | 1240 | if (cmd < 0) |
19a8e656 | 1241 | LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown", value); |
912541b0 | 1242 | else |
19a8e656 ZJS |
1243 | rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd); |
1244 | } else if (streq(attr, "file")) | |
912541b0 | 1245 | rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); |
19a8e656 | 1246 | else if (streq(attr, "db")) |
912541b0 | 1247 | rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); |
19a8e656 | 1248 | else if (streq(attr, "cmdline")) |
912541b0 | 1249 | rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); |
19a8e656 | 1250 | else if (streq(attr, "parent")) |
912541b0 | 1251 | rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); |
19a8e656 | 1252 | else |
8c19dc54 | 1253 | LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "IMPORT", attr); |
912541b0 | 1254 | |
99f16bb8 | 1255 | } else if (startswith(key, "TEST")) { |
912541b0 KS |
1256 | mode_t mode = 0; |
1257 | ||
19a8e656 | 1258 | if (op > OP_MATCH_MAX) |
8c19dc54 | 1259 | LOG_AND_RETURN("Invalid %s operation", "TEST"); |
19a8e656 | 1260 | |
2024ed61 | 1261 | attr = get_key_attribute(key + STRLEN("TEST")); |
67e4b385 | 1262 | if (attr) { |
912541b0 KS |
1263 | mode = strtol(attr, NULL, 8); |
1264 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); | |
99f16bb8 | 1265 | } else |
912541b0 | 1266 | rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); |
912541b0 | 1267 | |
99f16bb8 | 1268 | } else if (startswith(key, "RUN")) { |
2024ed61 | 1269 | attr = get_key_attribute(key + STRLEN("RUN")); |
67e4b385 | 1270 | if (!attr) |
83cd6b75 | 1271 | attr = "program"; |
19a8e656 | 1272 | if (op == OP_REMOVE) |
8c19dc54 | 1273 | LOG_AND_RETURN("Invalid %s operation", "RUN"); |
83cd6b75 | 1274 | |
33502ffe | 1275 | if (streq(attr, "builtin")) { |
19a8e656 | 1276 | const enum udev_builtin_cmd cmd = udev_builtin_lookup(value); |
83cd6b75 | 1277 | |
c45b369d | 1278 | if (cmd < 0) |
19a8e656 | 1279 | LOG_RULE_ERROR("RUN{builtin}: '%s' unknown", value); |
c45b369d YW |
1280 | else |
1281 | rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd); | |
33502ffe | 1282 | } else if (streq(attr, "program")) { |
c45b369d | 1283 | const enum udev_builtin_cmd cmd = _UDEV_BUILTIN_MAX; |
83cd6b75 | 1284 | |
83cd6b75 | 1285 | rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd); |
99f16bb8 | 1286 | } else |
8c19dc54 | 1287 | LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "RUN", attr); |
912541b0 | 1288 | |
99f16bb8 | 1289 | } else if (streq(key, "LABEL")) { |
19a8e656 | 1290 | if (op == OP_REMOVE) |
8c19dc54 | 1291 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1292 | |
915bf0f6 | 1293 | rule_tmp.rule.rule.label_off = rules_add_string(rules, value); |
912541b0 | 1294 | |
99f16bb8 | 1295 | } else if (streq(key, "GOTO")) { |
19a8e656 | 1296 | if (op == OP_REMOVE) |
8c19dc54 | 1297 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1298 | |
912541b0 | 1299 | rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); |
912541b0 | 1300 | |
99f16bb8 | 1301 | } else if (startswith(key, "NAME")) { |
19a8e656 | 1302 | if (op == OP_REMOVE) |
8c19dc54 | 1303 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 ZJS |
1304 | |
1305 | if (op < OP_MATCH_MAX) | |
912541b0 | 1306 | rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); |
19a8e656 | 1307 | else { |
33502ffe | 1308 | if (streq(value, "%k")) { |
19a8e656 | 1309 | LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove"); |
912541b0 KS |
1310 | continue; |
1311 | } | |
19a8e656 ZJS |
1312 | if (isempty(value)) { |
1313 | LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove"); | |
912541b0 KS |
1314 | continue; |
1315 | } | |
1316 | rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); | |
1317 | } | |
1318 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1319 | |
99f16bb8 | 1320 | } else if (streq(key, "SYMLINK")) { |
19a8e656 | 1321 | if (op == OP_REMOVE) |
8c19dc54 | 1322 | LOG_AND_RETURN("Invalid %s operation", key); |
19a8e656 | 1323 | |
8a173387 | 1324 | if (op < OP_MATCH_MAX) |
912541b0 | 1325 | rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); |
8a173387 KS |
1326 | else |
1327 | rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); | |
912541b0 | 1328 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1329 | |
99f16bb8 | 1330 | } else if (streq(key, "OWNER")) { |
912541b0 KS |
1331 | uid_t uid; |
1332 | char *endptr; | |
1333 | ||
19a8e656 | 1334 | if (op == OP_REMOVE) |
8c19dc54 | 1335 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1336 | |
912541b0 | 1337 | uid = strtoul(value, &endptr, 10); |
19a8e656 | 1338 | if (endptr[0] == '\0') |
912541b0 | 1339 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); |
67e4b385 | 1340 | else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY && !strchr("$%", value[0])) { |
912541b0 KS |
1341 | uid = add_uid(rules, value); |
1342 | rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); | |
c4d44cba | 1343 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
912541b0 | 1344 | rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); |
1f6b4113 | 1345 | |
912541b0 | 1346 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1347 | |
99f16bb8 | 1348 | } else if (streq(key, "GROUP")) { |
912541b0 KS |
1349 | gid_t gid; |
1350 | char *endptr; | |
1351 | ||
19a8e656 | 1352 | if (op == OP_REMOVE) |
8c19dc54 | 1353 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1354 | |
912541b0 | 1355 | gid = strtoul(value, &endptr, 10); |
19a8e656 | 1356 | if (endptr[0] == '\0') |
912541b0 | 1357 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); |
67e4b385 | 1358 | else if ((rules->resolve_name_timing == RESOLVE_NAME_EARLY) && !strchr("$%", value[0])) { |
912541b0 KS |
1359 | gid = add_gid(rules, value); |
1360 | rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); | |
c4d44cba | 1361 | } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) |
912541b0 | 1362 | rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); |
1f6b4113 | 1363 | |
912541b0 | 1364 | rule_tmp.rule.rule.can_set_name = true; |
912541b0 | 1365 | |
99f16bb8 | 1366 | } else if (streq(key, "MODE")) { |
912541b0 KS |
1367 | mode_t mode; |
1368 | char *endptr; | |
1369 | ||
19a8e656 | 1370 | if (op == OP_REMOVE) |
8c19dc54 | 1371 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1372 | |
912541b0 KS |
1373 | mode = strtol(value, &endptr, 8); |
1374 | if (endptr[0] == '\0') | |
1375 | rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); | |
1376 | else | |
1377 | rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); | |
1378 | rule_tmp.rule.rule.can_set_name = true; | |
912541b0 | 1379 | |
99f16bb8 | 1380 | } else if (streq(key, "OPTIONS")) { |
912541b0 KS |
1381 | const char *pos; |
1382 | ||
19a8e656 | 1383 | if (op == OP_REMOVE) |
8c19dc54 | 1384 | LOG_AND_RETURN("Invalid %s operation", key); |
8e3ba377 | 1385 | |
912541b0 | 1386 | pos = strstr(value, "link_priority="); |
67e4b385 | 1387 | if (pos) { |
fbd0b64f | 1388 | int prio = atoi(pos + STRLEN("link_priority=")); |
912541b0 KS |
1389 | |
1390 | rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); | |
912541b0 KS |
1391 | } |
1392 | ||
9f20a8a3 | 1393 | pos = strstr(value, "string_escape="); |
67e4b385 | 1394 | if (pos) { |
fbd0b64f | 1395 | pos += STRLEN("string_escape="); |
33502ffe | 1396 | if (startswith(pos, "none")) |
912541b0 | 1397 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); |
33502ffe | 1398 | else if (startswith(pos, "replace")) |
912541b0 KS |
1399 | rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); |
1400 | } | |
1401 | ||
1402 | pos = strstr(value, "db_persist"); | |
67e4b385 | 1403 | if (pos) |
912541b0 KS |
1404 | rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); |
1405 | ||
1406 | pos = strstr(value, "nowatch"); | |
b33fa02b LP |
1407 | if (pos) { |
1408 | static const int zero = 0; | |
1409 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &zero); | |
1410 | } else { | |
1411 | static const int one = 1; | |
912541b0 | 1412 | pos = strstr(value, "watch"); |
6d5e65f6 | 1413 | if (pos) |
b33fa02b | 1414 | rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &one); |
912541b0 KS |
1415 | } |
1416 | ||
1417 | pos = strstr(value, "static_node="); | |
67e4b385 | 1418 | if (pos) { |
fbd0b64f | 1419 | pos += STRLEN("static_node="); |
19a8e656 | 1420 | rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL); |
912541b0 KS |
1421 | rule_tmp.rule.rule.has_static_node = true; |
1422 | } | |
1423 | ||
19a8e656 | 1424 | } else |
8c19dc54 | 1425 | LOG_AND_RETURN("Unknown key '%s'", key); |
912541b0 KS |
1426 | } |
1427 | ||
19a8e656 | 1428 | /* add rule token and sort tokens */ |
912541b0 | 1429 | rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; |
19a8e656 | 1430 | if (add_token(rules, &rule_tmp.rule) != 0 || sort_token(rules, &rule_tmp) != 0) |
8c19dc54 | 1431 | LOG_RULE_ERROR("Failed to add rule token"); |
c7521974 KS |
1432 | } |
1433 | ||
9a07157d | 1434 | static int parse_file(UdevRules *rules, const char *filename) { |
6c8aaf0c | 1435 | _cleanup_fclose_ FILE *f = NULL; |
14cb109d YW |
1436 | unsigned first_token; |
1437 | unsigned filename_off; | |
912541b0 KS |
1438 | char line[UTIL_LINE_SIZE]; |
1439 | int line_nr = 0; | |
14cb109d | 1440 | unsigned i; |
912541b0 | 1441 | |
ed88bcfb ZJS |
1442 | f = fopen(filename, "re"); |
1443 | if (!f) { | |
1444 | if (errno == ENOENT) | |
1445 | return 0; | |
fae0f8a0 LP |
1446 | |
1447 | return -errno; | |
775f8b3c | 1448 | } |
912541b0 | 1449 | |
ed88bcfb ZJS |
1450 | if (null_or_empty_fd(fileno(f))) { |
1451 | log_debug("Skipping empty file: %s", filename); | |
1452 | return 0; | |
1453 | } else | |
1454 | log_debug("Reading rules file: %s", filename); | |
912541b0 KS |
1455 | |
1456 | first_token = rules->token_cur; | |
915bf0f6 | 1457 | filename_off = rules_add_string(rules, filename); |
912541b0 | 1458 | |
67e4b385 | 1459 | while (fgets(line, sizeof(line), f)) { |
912541b0 KS |
1460 | char *key; |
1461 | size_t len; | |
1462 | ||
1463 | /* skip whitespace */ | |
1464 | line_nr++; | |
1465 | key = line; | |
1466 | while (isspace(key[0])) | |
1467 | key++; | |
1468 | ||
1469 | /* comment */ | |
1470 | if (key[0] == '#') | |
1471 | continue; | |
1472 | ||
1473 | len = strlen(line); | |
1474 | if (len < 3) | |
1475 | continue; | |
1476 | ||
1477 | /* continue reading if backslash+newline is found */ | |
1478 | while (line[len-2] == '\\') { | |
67e4b385 | 1479 | if (!fgets(&line[len-2], (sizeof(line)-len)+2, f)) |
912541b0 KS |
1480 | break; |
1481 | if (strlen(&line[len-2]) < 2) | |
1482 | break; | |
1483 | line_nr++; | |
1484 | len = strlen(line); | |
1485 | } | |
1486 | ||
1487 | if (len+1 >= sizeof(line)) { | |
8c19dc54 | 1488 | log_error("Line too long '%s':%u, ignored", filename, line_nr); |
912541b0 KS |
1489 | continue; |
1490 | } | |
1491 | add_rule(rules, key, filename, filename_off, line_nr); | |
1492 | } | |
912541b0 KS |
1493 | |
1494 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ | |
1495 | for (i = first_token+1; i < rules->token_cur; i++) { | |
1496 | if (rules->tokens[i].type == TK_A_GOTO) { | |
915bf0f6 | 1497 | char *label = rules_str(rules, rules->tokens[i].key.value_off); |
14cb109d | 1498 | unsigned j; |
912541b0 KS |
1499 | |
1500 | for (j = i+1; j < rules->token_cur; j++) { | |
1501 | if (rules->tokens[j].type != TK_RULE) | |
1502 | continue; | |
1503 | if (rules->tokens[j].rule.label_off == 0) | |
1504 | continue; | |
915bf0f6 | 1505 | if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off))) |
912541b0 KS |
1506 | continue; |
1507 | rules->tokens[i].key.rule_goto = j; | |
1508 | break; | |
1509 | } | |
1510 | if (rules->tokens[i].key.rule_goto == 0) | |
9f6445e3 | 1511 | log_error("GOTO '%s' has no matching label in: '%s'", label, filename); |
912541b0 KS |
1512 | } |
1513 | } | |
1514 | return 0; | |
c7521974 KS |
1515 | } |
1516 | ||
9a07157d ZJS |
1517 | int udev_rules_new(UdevRules **ret_rules, ResolveNameTiming resolve_name_timing) { |
1518 | _cleanup_(udev_rules_freep) UdevRules *rules = NULL; | |
1d791281 ZJS |
1519 | _cleanup_strv_free_ char **files = NULL; |
1520 | char **f; | |
775f8b3c | 1521 | int r; |
912541b0 | 1522 | |
c4d44cba YW |
1523 | assert(resolve_name_timing >= 0 && resolve_name_timing < _RESOLVE_NAME_TIMING_MAX); |
1524 | ||
9a07157d | 1525 | rules = new(UdevRules, 1); |
1017d66b | 1526 | if (!rules) |
1d791281 | 1527 | return -ENOMEM; |
1017d66b | 1528 | |
9a07157d | 1529 | *rules = (UdevRules) { |
c4d44cba | 1530 | .resolve_name_timing = resolve_name_timing, |
1017d66b | 1531 | }; |
912541b0 KS |
1532 | |
1533 | /* init token array and string buffer */ | |
8419d457 | 1534 | rules->tokens = malloc_multiply(PREALLOC_TOKEN, sizeof(struct token)); |
67e4b385 | 1535 | if (!rules->tokens) |
1d791281 | 1536 | return -ENOMEM; |
912541b0 KS |
1537 | rules->token_max = PREALLOC_TOKEN; |
1538 | ||
915bf0f6 KS |
1539 | rules->strbuf = strbuf_new(); |
1540 | if (!rules->strbuf) | |
1d791281 | 1541 | return -ENOMEM; |
0820a4f0 | 1542 | |
3b8c1cb0 KS |
1543 | udev_rules_check_timestamp(rules); |
1544 | ||
b5084605 | 1545 | r = conf_files_list_strv(&files, ".rules", NULL, 0, rules_dirs); |
1d791281 ZJS |
1546 | if (r < 0) |
1547 | return log_error_errno(r, "Failed to enumerate rules files: %m"); | |
912541b0 | 1548 | |
775f8b3c KS |
1549 | /* |
1550 | * The offset value in the rules strct is limited; add all | |
1551 | * rules file names to the beginning of the string buffer. | |
1552 | */ | |
1553 | STRV_FOREACH(f, files) | |
915bf0f6 | 1554 | rules_add_string(rules, *f); |
912541b0 | 1555 | |
775f8b3c KS |
1556 | STRV_FOREACH(f, files) |
1557 | parse_file(rules, *f); | |
1558 | ||
1d791281 | 1559 | struct token end_token = { .type = TK_END }; |
912541b0 | 1560 | add_token(rules, &end_token); |
8c19dc54 | 1561 | log_debug("Rules contain %zu bytes tokens (%u * %zu bytes), %zu bytes strings", |
915bf0f6 | 1562 | rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len); |
912541b0 | 1563 | |
915bf0f6 | 1564 | /* cleanup temporary strbuf data */ |
9f6445e3 | 1565 | log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used", |
915bf0f6 KS |
1566 | rules->strbuf->in_count, rules->strbuf->in_len, |
1567 | rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count); | |
1568 | strbuf_complete(rules->strbuf); | |
912541b0 KS |
1569 | |
1570 | /* cleanup uid/gid cache */ | |
a1e58e8e | 1571 | rules->uids = mfree(rules->uids); |
912541b0 KS |
1572 | rules->uids_cur = 0; |
1573 | rules->uids_max = 0; | |
a1e58e8e | 1574 | rules->gids = mfree(rules->gids); |
912541b0 KS |
1575 | rules->gids_cur = 0; |
1576 | rules->gids_max = 0; | |
1577 | ||
1578 | dump_rules(rules); | |
1d791281 ZJS |
1579 | *ret_rules = TAKE_PTR(rules); |
1580 | return 0; | |
c7521974 KS |
1581 | } |
1582 | ||
9a07157d | 1583 | UdevRules *udev_rules_free(UdevRules *rules) { |
67e4b385 | 1584 | if (!rules) |
912541b0 KS |
1585 | return NULL; |
1586 | free(rules->tokens); | |
915bf0f6 | 1587 | strbuf_cleanup(rules->strbuf); |
912541b0 KS |
1588 | free(rules->uids); |
1589 | free(rules->gids); | |
6b430fdb | 1590 | return mfree(rules); |
c7521974 | 1591 | } |
6880b25d | 1592 | |
9a07157d | 1593 | bool udev_rules_check_timestamp(UdevRules *rules) { |
5c11fbe3 KS |
1594 | if (!rules) |
1595 | return false; | |
1596 | ||
2ad8416d | 1597 | return paths_check_timestamp(rules_dirs, &rules->dirs_ts_usec, true); |
6ada823a KS |
1598 | } |
1599 | ||
9a07157d | 1600 | static int match_key(UdevRules *rules, struct token *token, const char *val) { |
915bf0f6 | 1601 | char *key_value = rules_str(rules, token->key.value_off); |
912541b0 KS |
1602 | char *pos; |
1603 | bool match = false; | |
1604 | ||
67e4b385 | 1605 | if (!val) |
912541b0 KS |
1606 | val = ""; |
1607 | ||
1608 | switch (token->key.glob) { | |
1609 | case GL_PLAIN: | |
33502ffe | 1610 | match = (streq(key_value, val)); |
912541b0 KS |
1611 | break; |
1612 | case GL_GLOB: | |
1613 | match = (fnmatch(key_value, val, 0) == 0); | |
1614 | break; | |
1615 | case GL_SPLIT: | |
1616 | { | |
33502ffe | 1617 | const char *s; |
912541b0 KS |
1618 | size_t len; |
1619 | ||
915bf0f6 | 1620 | s = rules_str(rules, token->key.value_off); |
912541b0 KS |
1621 | len = strlen(val); |
1622 | for (;;) { | |
1623 | const char *next; | |
1624 | ||
33502ffe | 1625 | next = strchr(s, '|'); |
67e4b385 | 1626 | if (next) { |
33502ffe | 1627 | size_t matchlen = (size_t)(next - s); |
912541b0 | 1628 | |
641906e9 | 1629 | match = (matchlen == len && strneq(s, val, matchlen)); |
912541b0 KS |
1630 | if (match) |
1631 | break; | |
1632 | } else { | |
33502ffe | 1633 | match = (streq(s, val)); |
912541b0 KS |
1634 | break; |
1635 | } | |
33502ffe | 1636 | s = &next[1]; |
912541b0 KS |
1637 | } |
1638 | break; | |
1639 | } | |
1640 | case GL_SPLIT_GLOB: | |
1641 | { | |
1642 | char value[UTIL_PATH_SIZE]; | |
1643 | ||
d5a89d7d | 1644 | strscpy(value, sizeof(value), rules_str(rules, token->key.value_off)); |
912541b0 | 1645 | key_value = value; |
67e4b385 | 1646 | while (key_value) { |
912541b0 | 1647 | pos = strchr(key_value, '|'); |
67e4b385 | 1648 | if (pos) { |
912541b0 KS |
1649 | pos[0] = '\0'; |
1650 | pos = &pos[1]; | |
1651 | } | |
912541b0 KS |
1652 | match = (fnmatch(key_value, val, 0) == 0); |
1653 | if (match) | |
1654 | break; | |
1655 | key_value = pos; | |
1656 | } | |
1657 | break; | |
1658 | } | |
1659 | case GL_SOMETHING: | |
1660 | match = (val[0] != '\0'); | |
1661 | break; | |
1662 | case GL_UNSET: | |
1663 | return -1; | |
1664 | } | |
1665 | ||
baa30fbc | 1666 | if (match && (token->key.op == OP_MATCH)) |
912541b0 | 1667 | return 0; |
baa30fbc | 1668 | if (!match && (token->key.op == OP_NOMATCH)) |
912541b0 | 1669 | return 0; |
912541b0 | 1670 | return -1; |
6880b25d KS |
1671 | } |
1672 | ||
2e088715 | 1673 | static int match_attr(UdevRules *rules, sd_device *dev, UdevEvent *event, struct token *cur) { |
5ba7e798 YW |
1674 | char nbuf[UTIL_NAME_SIZE], vbuf[UTIL_NAME_SIZE]; |
1675 | const char *name, *value; | |
912541b0 KS |
1676 | size_t len; |
1677 | ||
915bf0f6 | 1678 | name = rules_str(rules, cur->key.attr_off); |
912541b0 KS |
1679 | switch (cur->key.attrsubst) { |
1680 | case SB_FORMAT: | |
e20a9171 | 1681 | udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false); |
912541b0 | 1682 | name = nbuf; |
4831981d | 1683 | _fallthrough_; |
912541b0 | 1684 | case SB_NONE: |
5ba7e798 | 1685 | if (sd_device_get_sysattr_value(dev, name, &value) < 0) |
912541b0 KS |
1686 | return -1; |
1687 | break; | |
1688 | case SB_SUBSYS: | |
3839535a | 1689 | if (util_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) != 0) |
912541b0 KS |
1690 | return -1; |
1691 | value = vbuf; | |
1692 | break; | |
1693 | default: | |
1694 | return -1; | |
1695 | } | |
1696 | ||
1697 | /* remove trailing whitespace, if not asked to match for it */ | |
1698 | len = strlen(value); | |
1699 | if (len > 0 && isspace(value[len-1])) { | |
1700 | const char *key_value; | |
1701 | size_t klen; | |
1702 | ||
915bf0f6 | 1703 | key_value = rules_str(rules, cur->key.value_off); |
912541b0 KS |
1704 | klen = strlen(key_value); |
1705 | if (klen > 0 && !isspace(key_value[klen-1])) { | |
1706 | if (value != vbuf) { | |
d5a89d7d | 1707 | strscpy(vbuf, sizeof(vbuf), value); |
912541b0 KS |
1708 | value = vbuf; |
1709 | } | |
1710 | while (len > 0 && isspace(vbuf[--len])) | |
1711 | vbuf[len] = '\0'; | |
912541b0 KS |
1712 | } |
1713 | } | |
1714 | ||
1715 | return match_key(rules, cur, value); | |
6880b25d KS |
1716 | } |
1717 | ||
1718 | enum escape_type { | |
912541b0 KS |
1719 | ESCAPE_UNSET, |
1720 | ESCAPE_NONE, | |
1721 | ESCAPE_REPLACE, | |
6880b25d KS |
1722 | }; |
1723 | ||
d838e145 | 1724 | int udev_rules_apply_to_event( |
9a07157d | 1725 | UdevRules *rules, |
2e088715 | 1726 | UdevEvent *event, |
d838e145 | 1727 | usec_t timeout_usec, |
9b5150b6 | 1728 | Hashmap *properties_list) { |
cf28ad46 | 1729 | sd_device *dev = event->dev; |
912541b0 | 1730 | enum escape_type esc = ESCAPE_UNSET; |
cf697ec0 YW |
1731 | struct token *cur, *rule; |
1732 | const char *action, *val; | |
912541b0 | 1733 | bool can_set_name; |
88b013b2 | 1734 | int r; |
912541b0 | 1735 | |
d838e145 YW |
1736 | if (!rules->tokens) |
1737 | return 0; | |
912541b0 | 1738 | |
cf697ec0 YW |
1739 | r = sd_device_get_property_value(dev, "ACTION", &action); |
1740 | if (r < 0) | |
1741 | return r; | |
1742 | ||
1743 | can_set_name = (!streq(action, "remove") && | |
1744 | (sd_device_get_devnum(dev, NULL) >= 0 || | |
1745 | sd_device_get_ifindex(dev, NULL) >= 0)); | |
912541b0 KS |
1746 | |
1747 | /* loop through token list, match, run actions or forward to next rule */ | |
1748 | cur = &rules->tokens[0]; | |
1749 | rule = cur; | |
1750 | for (;;) { | |
1751 | dump_token(rules, cur); | |
1752 | switch (cur->type) { | |
1753 | case TK_RULE: | |
1754 | /* current rule */ | |
1755 | rule = cur; | |
1756 | /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ | |
1757 | if (!can_set_name && rule->rule.can_set_name) | |
1758 | goto nomatch; | |
1759 | esc = ESCAPE_UNSET; | |
1760 | break; | |
1761 | case TK_M_ACTION: | |
cf697ec0 | 1762 | if (match_key(rules, cur, action) != 0) |
912541b0 KS |
1763 | goto nomatch; |
1764 | break; | |
1765 | case TK_M_DEVPATH: | |
cf697ec0 YW |
1766 | if (sd_device_get_devpath(dev, &val) < 0) |
1767 | goto nomatch; | |
1768 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1769 | goto nomatch; |
1770 | break; | |
1771 | case TK_M_KERNEL: | |
cf697ec0 YW |
1772 | if (sd_device_get_sysname(dev, &val) < 0) |
1773 | goto nomatch; | |
1774 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1775 | goto nomatch; |
1776 | break; | |
1777 | case TK_M_DEVLINK: { | |
dbea7f24 | 1778 | const char *devlink; |
912541b0 KS |
1779 | bool match = false; |
1780 | ||
cf697ec0 | 1781 | FOREACH_DEVICE_DEVLINK(dev, devlink) |
dbea7f24 | 1782 | if (match_key(rules, cur, devlink + STRLEN("/dev/")) == 0) { |
912541b0 KS |
1783 | match = true; |
1784 | break; | |
1785 | } | |
dbea7f24 | 1786 | |
912541b0 KS |
1787 | if (!match) |
1788 | goto nomatch; | |
1789 | break; | |
1790 | } | |
1791 | case TK_M_NAME: | |
1792 | if (match_key(rules, cur, event->name) != 0) | |
1793 | goto nomatch; | |
1794 | break; | |
1795 | case TK_M_ENV: { | |
915bf0f6 | 1796 | const char *key_name = rules_str(rules, cur->key.attr_off); |
912541b0 | 1797 | |
cf697ec0 YW |
1798 | if (sd_device_get_property_value(dev, key_name, &val) < 0) { |
1799 | /* check global properties */ | |
1800 | if (properties_list) | |
1801 | val = hashmap_get(properties_list, key_name); | |
1802 | else | |
1803 | val = NULL; | |
1804 | } | |
adeba500 | 1805 | |
cf697ec0 | 1806 | if (match_key(rules, cur, strempty(val))) |
912541b0 KS |
1807 | goto nomatch; |
1808 | break; | |
1809 | } | |
1810 | case TK_M_TAG: { | |
912541b0 | 1811 | bool match = false; |
dbea7f24 | 1812 | const char *tag; |
912541b0 | 1813 | |
cf697ec0 | 1814 | FOREACH_DEVICE_TAG(dev, tag) |
dbea7f24 | 1815 | if (streq(rules_str(rules, cur->key.value_off), tag)) { |
912541b0 KS |
1816 | match = true; |
1817 | break; | |
1818 | } | |
dbea7f24 | 1819 | |
4302857b FF |
1820 | if ((!match && (cur->key.op != OP_NOMATCH)) || |
1821 | (match && (cur->key.op == OP_NOMATCH))) | |
912541b0 KS |
1822 | goto nomatch; |
1823 | break; | |
1824 | } | |
1825 | case TK_M_SUBSYSTEM: | |
cf697ec0 YW |
1826 | if (sd_device_get_subsystem(dev, &val) < 0) |
1827 | goto nomatch; | |
1828 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1829 | goto nomatch; |
1830 | break; | |
1831 | case TK_M_DRIVER: | |
cf697ec0 YW |
1832 | if (sd_device_get_driver(dev, &val) < 0) |
1833 | goto nomatch; | |
1834 | if (match_key(rules, cur, val) != 0) | |
912541b0 KS |
1835 | goto nomatch; |
1836 | break; | |
912541b0 | 1837 | case TK_M_ATTR: |
cf697ec0 | 1838 | if (match_attr(rules, dev, event, cur) != 0) |
912541b0 KS |
1839 | goto nomatch; |
1840 | break; | |
f4cf2e5b KS |
1841 | case TK_M_SYSCTL: { |
1842 | char filename[UTIL_PATH_SIZE]; | |
1843 | _cleanup_free_ char *value = NULL; | |
1844 | size_t len; | |
1845 | ||
e20a9171 | 1846 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b KS |
1847 | sysctl_normalize(filename); |
1848 | if (sysctl_read(filename, &value) < 0) | |
1849 | goto nomatch; | |
1850 | ||
1851 | len = strlen(value); | |
1852 | while (len > 0 && isspace(value[--len])) | |
1853 | value[len] = '\0'; | |
1854 | if (match_key(rules, cur, value) != 0) | |
1855 | goto nomatch; | |
1856 | break; | |
1857 | } | |
912541b0 KS |
1858 | case TK_M_KERNELS: |
1859 | case TK_M_SUBSYSTEMS: | |
1860 | case TK_M_DRIVERS: | |
1861 | case TK_M_ATTRS: | |
1862 | case TK_M_TAGS: { | |
1863 | struct token *next; | |
1864 | ||
1865 | /* get whole sequence of parent matches */ | |
1866 | next = cur; | |
1867 | while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) | |
1868 | next++; | |
1869 | ||
1870 | /* loop over parents */ | |
cf697ec0 | 1871 | event->dev_parent = dev; |
912541b0 KS |
1872 | for (;;) { |
1873 | struct token *key; | |
1874 | ||
912541b0 KS |
1875 | /* loop over sequence of parent match keys */ |
1876 | for (key = cur; key < next; key++ ) { | |
1877 | dump_token(rules, key); | |
1878 | switch(key->type) { | |
1879 | case TK_M_KERNELS: | |
f3d241fe YW |
1880 | if (sd_device_get_sysname(event->dev_parent, &val) < 0) |
1881 | goto try_parent; | |
1882 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1883 | goto try_parent; |
1884 | break; | |
1885 | case TK_M_SUBSYSTEMS: | |
f3d241fe YW |
1886 | if (sd_device_get_subsystem(event->dev_parent, &val) < 0) |
1887 | goto try_parent; | |
1888 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1889 | goto try_parent; |
1890 | break; | |
1891 | case TK_M_DRIVERS: | |
f3d241fe YW |
1892 | if (sd_device_get_driver(event->dev_parent, &val) < 0) |
1893 | goto try_parent; | |
1894 | if (match_key(rules, key, val) != 0) | |
912541b0 KS |
1895 | goto try_parent; |
1896 | break; | |
1897 | case TK_M_ATTRS: | |
f3d241fe | 1898 | if (match_attr(rules, event->dev_parent, event, key) != 0) |
912541b0 KS |
1899 | goto try_parent; |
1900 | break; | |
1901 | case TK_M_TAGS: { | |
f3d241fe | 1902 | bool match = sd_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off)); |
912541b0 KS |
1903 | |
1904 | if (match && key->key.op == OP_NOMATCH) | |
1905 | goto try_parent; | |
1906 | if (!match && key->key.op == OP_MATCH) | |
1907 | goto try_parent; | |
1908 | break; | |
1909 | } | |
1910 | default: | |
1911 | goto nomatch; | |
1912 | } | |
912541b0 | 1913 | } |
912541b0 KS |
1914 | break; |
1915 | ||
1916 | try_parent: | |
f3d241fe YW |
1917 | if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) { |
1918 | event->dev_parent = NULL; | |
912541b0 | 1919 | goto nomatch; |
f3d241fe | 1920 | } |
912541b0 KS |
1921 | } |
1922 | /* move behind our sequence of parent match keys */ | |
1923 | cur = next; | |
1924 | continue; | |
1925 | } | |
1926 | case TK_M_TEST: { | |
1927 | char filename[UTIL_PATH_SIZE]; | |
1928 | struct stat statbuf; | |
1929 | int match; | |
1930 | ||
e20a9171 | 1931 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename), false); |
3839535a | 1932 | if (util_resolve_subsys_kernel(filename, filename, sizeof(filename), false) != 0) { |
912541b0 KS |
1933 | if (filename[0] != '/') { |
1934 | char tmp[UTIL_PATH_SIZE]; | |
1935 | ||
cf697ec0 YW |
1936 | if (sd_device_get_syspath(dev, &val) < 0) |
1937 | goto nomatch; | |
1938 | ||
d5a89d7d | 1939 | strscpy(tmp, sizeof(tmp), filename); |
cf697ec0 | 1940 | strscpyl(filename, sizeof(filename), val, "/", tmp, NULL); |
912541b0 KS |
1941 | } |
1942 | } | |
1943 | attr_subst_subdir(filename, sizeof(filename)); | |
1944 | ||
1945 | match = (stat(filename, &statbuf) == 0); | |
baa30fbc | 1946 | if (match && cur->key.mode > 0) |
912541b0 | 1947 | match = ((statbuf.st_mode & cur->key.mode) > 0); |
912541b0 KS |
1948 | if (match && cur->key.op == OP_NOMATCH) |
1949 | goto nomatch; | |
1950 | if (!match && cur->key.op == OP_MATCH) | |
1951 | goto nomatch; | |
1952 | break; | |
1953 | } | |
912541b0 | 1954 | case TK_M_PROGRAM: { |
cf697ec0 | 1955 | char program[UTIL_PATH_SIZE], result[UTIL_LINE_SIZE]; |
912541b0 | 1956 | |
a1e58e8e | 1957 | event->program_result = mfree(event->program_result); |
e20a9171 | 1958 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program), false); |
b4ba2fe3 YW |
1959 | log_device_debug(dev, "PROGRAM '%s' %s:%u", |
1960 | program, | |
1961 | rules_str(rules, rule->rule.filename_off), | |
1962 | rule->rule.filename_line); | |
912541b0 | 1963 | |
a7521142 | 1964 | if (udev_event_spawn(event, timeout_usec, true, program, result, sizeof(result)) != 0) { |
912541b0 KS |
1965 | if (cur->key.op != OP_NOMATCH) |
1966 | goto nomatch; | |
1967 | } else { | |
1968 | int count; | |
1969 | ||
7546145e | 1970 | delete_trailing_chars(result, "\n"); |
4c701096 | 1971 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
1972 | count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); |
1973 | if (count > 0) | |
b4ba2fe3 | 1974 | log_device_debug(dev, "Replaced %i character(s) from result of '%s'" , count, program); |
912541b0 KS |
1975 | } |
1976 | event->program_result = strdup(result); | |
912541b0 KS |
1977 | if (cur->key.op == OP_NOMATCH) |
1978 | goto nomatch; | |
1979 | } | |
1980 | break; | |
1981 | } | |
1982 | case TK_M_IMPORT_FILE: { | |
1983 | char import[UTIL_PATH_SIZE]; | |
1984 | ||
e20a9171 | 1985 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
cf697ec0 | 1986 | if (import_file_into_properties(dev, import) != 0) |
912541b0 KS |
1987 | if (cur->key.op != OP_NOMATCH) |
1988 | goto nomatch; | |
1989 | break; | |
1990 | } | |
1991 | case TK_M_IMPORT_PROG: { | |
1992 | char import[UTIL_PATH_SIZE]; | |
1993 | ||
e20a9171 | 1994 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
b4ba2fe3 YW |
1995 | log_device_debug(dev, "IMPORT '%s' %s:%u", |
1996 | import, | |
1997 | rules_str(rules, rule->rule.filename_off), | |
1998 | rule->rule.filename_line); | |
912541b0 | 1999 | |
66f737b4 | 2000 | if (import_program_into_properties(event, timeout_usec, import) != 0) |
912541b0 KS |
2001 | if (cur->key.op != OP_NOMATCH) |
2002 | goto nomatch; | |
2003 | break; | |
2004 | } | |
2005 | case TK_M_IMPORT_BUILTIN: { | |
2006 | char command[UTIL_PATH_SIZE]; | |
2007 | ||
2008 | if (udev_builtin_run_once(cur->key.builtin_cmd)) { | |
2009 | /* check if we ran already */ | |
2010 | if (event->builtin_run & (1 << cur->key.builtin_cmd)) { | |
b4ba2fe3 YW |
2011 | log_device_debug(dev, "IMPORT builtin skip '%s' %s:%u", |
2012 | udev_builtin_name(cur->key.builtin_cmd), | |
2013 | rules_str(rules, rule->rule.filename_off), | |
2014 | rule->rule.filename_line); | |
912541b0 KS |
2015 | /* return the result from earlier run */ |
2016 | if (event->builtin_ret & (1 << cur->key.builtin_cmd)) | |
7d6884b6 | 2017 | if (cur->key.op != OP_NOMATCH) |
912541b0 KS |
2018 | goto nomatch; |
2019 | break; | |
2020 | } | |
2021 | /* mark as ran */ | |
2022 | event->builtin_run |= (1 << cur->key.builtin_cmd); | |
2023 | } | |
2024 | ||
e20a9171 | 2025 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command), false); |
b4ba2fe3 YW |
2026 | log_device_debug(dev, "IMPORT builtin '%s' %s:%u", |
2027 | udev_builtin_name(cur->key.builtin_cmd), | |
2028 | rules_str(rules, rule->rule.filename_off), | |
2029 | rule->rule.filename_line); | |
912541b0 | 2030 | |
cf697ec0 | 2031 | r = udev_builtin_run(dev, cur->key.builtin_cmd, command, false); |
d354690e | 2032 | if (r < 0) { |
912541b0 | 2033 | /* remember failure */ |
b4ba2fe3 YW |
2034 | log_device_debug_errno(dev, r, "IMPORT builtin '%s' fails: %m", |
2035 | udev_builtin_name(cur->key.builtin_cmd)); | |
912541b0 KS |
2036 | event->builtin_ret |= (1 << cur->key.builtin_cmd); |
2037 | if (cur->key.op != OP_NOMATCH) | |
2038 | goto nomatch; | |
2039 | } | |
2040 | break; | |
2041 | } | |
2042 | case TK_M_IMPORT_DB: { | |
cf697ec0 | 2043 | const char *key; |
912541b0 | 2044 | |
cf697ec0 | 2045 | key = rules_str(rules, cur->key.value_off); |
a6da77b7 YW |
2046 | if (event->dev_db_clone && |
2047 | sd_device_get_property_value(event->dev_db_clone, key, &val) >= 0) | |
cf697ec0 | 2048 | device_add_property(dev, key, val); |
480ecb7d YW |
2049 | else if (cur->key.op != OP_NOMATCH) |
2050 | goto nomatch; | |
912541b0 KS |
2051 | break; |
2052 | } | |
2053 | case TK_M_IMPORT_CMDLINE: { | |
88b013b2 | 2054 | _cleanup_free_ char *value = NULL; |
912541b0 | 2055 | bool imported = false; |
88b013b2 | 2056 | const char *key; |
912541b0 | 2057 | |
88b013b2 | 2058 | key = rules_str(rules, cur->key.value_off); |
88b013b2 LP |
2059 | r = proc_cmdline_get_key(key, PROC_CMDLINE_VALUE_OPTIONAL, &value); |
2060 | if (r < 0) | |
b4ba2fe3 | 2061 | log_device_debug_errno(dev, r, "Failed to read %s from /proc/cmdline, ignoring: %m", key); |
88b013b2 LP |
2062 | else if (r > 0) { |
2063 | imported = true; | |
2064 | ||
2065 | if (value) | |
cf697ec0 | 2066 | device_add_property(dev, key, value); |
88b013b2 LP |
2067 | else |
2068 | /* we import simple flags as 'FLAG=1' */ | |
cf697ec0 | 2069 | device_add_property(dev, key, "1"); |
912541b0 | 2070 | } |
88b013b2 | 2071 | |
912541b0 KS |
2072 | if (!imported && cur->key.op != OP_NOMATCH) |
2073 | goto nomatch; | |
2074 | break; | |
2075 | } | |
2076 | case TK_M_IMPORT_PARENT: { | |
2077 | char import[UTIL_PATH_SIZE]; | |
2078 | ||
e20a9171 | 2079 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false); |
cf697ec0 | 2080 | if (import_parent_into_properties(dev, import) != 0) |
912541b0 KS |
2081 | if (cur->key.op != OP_NOMATCH) |
2082 | goto nomatch; | |
2083 | break; | |
2084 | } | |
2085 | case TK_M_RESULT: | |
2086 | if (match_key(rules, cur, event->program_result) != 0) | |
2087 | goto nomatch; | |
2088 | break; | |
2089 | case TK_A_STRING_ESCAPE_NONE: | |
2090 | esc = ESCAPE_NONE; | |
2091 | break; | |
2092 | case TK_A_STRING_ESCAPE_REPLACE: | |
2093 | esc = ESCAPE_REPLACE; | |
2094 | break; | |
2095 | case TK_A_DB_PERSIST: | |
cf697ec0 | 2096 | device_set_db_persist(dev); |
912541b0 KS |
2097 | break; |
2098 | case TK_A_INOTIFY_WATCH: | |
2099 | if (event->inotify_watch_final) | |
2100 | break; | |
2101 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2102 | event->inotify_watch_final = true; | |
2103 | event->inotify_watch = cur->key.watch; | |
2104 | break; | |
2105 | case TK_A_DEVLINK_PRIO: | |
cf697ec0 | 2106 | device_set_devlink_priority(dev, cur->key.devlink_prio); |
912541b0 KS |
2107 | break; |
2108 | case TK_A_OWNER: { | |
2109 | char owner[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2110 | const char *ow = owner; |
912541b0 KS |
2111 | |
2112 | if (event->owner_final) | |
2113 | break; | |
2114 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2115 | event->owner_final = true; | |
e20a9171 | 2116 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner), false); |
1edefa4f | 2117 | event->owner_set = true; |
fafff8f1 | 2118 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2119 | if (r < 0) { |
b4ba2fe3 | 2120 | log_unknown_owner(dev, r, "user", owner); |
23bf8dd7 TG |
2121 | event->uid = 0; |
2122 | } | |
b4ba2fe3 YW |
2123 | log_device_debug(dev, "OWNER %u %s:%u", |
2124 | event->uid, | |
2125 | rules_str(rules, rule->rule.filename_off), | |
2126 | rule->rule.filename_line); | |
912541b0 KS |
2127 | break; |
2128 | } | |
2129 | case TK_A_GROUP: { | |
2130 | char group[UTIL_NAME_SIZE]; | |
23bf8dd7 | 2131 | const char *gr = group; |
912541b0 KS |
2132 | |
2133 | if (event->group_final) | |
2134 | break; | |
2135 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2136 | event->group_final = true; | |
e20a9171 | 2137 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group), false); |
1edefa4f | 2138 | event->group_set = true; |
fafff8f1 | 2139 | r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING); |
23bf8dd7 | 2140 | if (r < 0) { |
b4ba2fe3 | 2141 | log_unknown_owner(dev, r, "group", group); |
23bf8dd7 TG |
2142 | event->gid = 0; |
2143 | } | |
b4ba2fe3 YW |
2144 | log_device_debug(dev, "GROUP %u %s:%u", |
2145 | event->gid, | |
2146 | rules_str(rules, rule->rule.filename_off), | |
2147 | rule->rule.filename_line); | |
912541b0 KS |
2148 | break; |
2149 | } | |
2150 | case TK_A_MODE: { | |
b4ba2fe3 | 2151 | char mode_str[UTIL_NAME_SIZE]; |
912541b0 | 2152 | mode_t mode; |
912541b0 KS |
2153 | |
2154 | if (event->mode_final) | |
2155 | break; | |
e20a9171 | 2156 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str), false); |
b4ba2fe3 YW |
2157 | r = parse_mode(mode_str, &mode); |
2158 | if (r < 0) { | |
2159 | log_device_error_errno(dev, r, "Failed to parse mode '%s': %m", mode_str); | |
912541b0 KS |
2160 | break; |
2161 | } | |
2162 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2163 | event->mode_final = true; | |
2164 | event->mode_set = true; | |
2165 | event->mode = mode; | |
b4ba2fe3 YW |
2166 | log_device_debug(dev, "MODE %#o %s:%u", |
2167 | event->mode, | |
2168 | rules_str(rules, rule->rule.filename_off), | |
2169 | rule->rule.filename_line); | |
912541b0 KS |
2170 | break; |
2171 | } | |
2172 | case TK_A_OWNER_ID: | |
2173 | if (event->owner_final) | |
2174 | break; | |
2175 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2176 | event->owner_final = true; | |
1edefa4f | 2177 | event->owner_set = true; |
912541b0 | 2178 | event->uid = cur->key.uid; |
b4ba2fe3 YW |
2179 | log_device_debug(dev, "OWNER %u %s:%u", |
2180 | event->uid, | |
2181 | rules_str(rules, rule->rule.filename_off), | |
2182 | rule->rule.filename_line); | |
912541b0 KS |
2183 | break; |
2184 | case TK_A_GROUP_ID: | |
2185 | if (event->group_final) | |
2186 | break; | |
2187 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2188 | event->group_final = true; | |
1edefa4f | 2189 | event->group_set = true; |
912541b0 | 2190 | event->gid = cur->key.gid; |
b4ba2fe3 YW |
2191 | log_device_debug(dev, "GROUP %u %s:%u", |
2192 | event->gid, | |
2193 | rules_str(rules, rule->rule.filename_off), | |
2194 | rule->rule.filename_line); | |
912541b0 KS |
2195 | break; |
2196 | case TK_A_MODE_ID: | |
2197 | if (event->mode_final) | |
2198 | break; | |
2199 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2200 | event->mode_final = true; | |
2201 | event->mode_set = true; | |
2202 | event->mode = cur->key.mode; | |
b4ba2fe3 YW |
2203 | log_device_debug(dev, "MODE %#o %s:%u", |
2204 | event->mode, | |
2205 | rules_str(rules, rule->rule.filename_off), | |
2206 | rule->rule.filename_line); | |
912541b0 | 2207 | break; |
c26547d6 | 2208 | case TK_A_SECLABEL: { |
d838e145 | 2209 | _cleanup_free_ char *name = NULL, *label = NULL; |
4f985bd8 | 2210 | char label_str[UTIL_LINE_SIZE] = {}; |
c26547d6 | 2211 | |
d838e145 YW |
2212 | name = strdup(rules_str(rules, cur->key.attr_off)); |
2213 | if (!name) | |
2214 | return log_oom(); | |
2215 | ||
e20a9171 | 2216 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), label_str, sizeof(label_str), false); |
d838e145 YW |
2217 | if (!isempty(label_str)) |
2218 | label = strdup(label_str); | |
4f985bd8 | 2219 | else |
d838e145 YW |
2220 | label = strdup(rules_str(rules, cur->key.value_off)); |
2221 | if (!label) | |
2222 | return log_oom(); | |
4f985bd8 | 2223 | |
4c701096 | 2224 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
d838e145 YW |
2225 | hashmap_clear_free_free(event->seclabel_list); |
2226 | ||
2227 | r = hashmap_ensure_allocated(&event->seclabel_list, NULL); | |
2228 | if (r < 0) | |
2229 | return log_oom(); | |
2230 | ||
2231 | r = hashmap_put(event->seclabel_list, name, label); | |
2232 | if (r < 0) | |
2233 | return log_oom(); | |
2234 | ||
2235 | name = label = NULL; | |
2236 | ||
b4ba2fe3 YW |
2237 | log_device_debug(dev, "SECLABEL{%s}='%s' %s:%u", |
2238 | name, label, | |
2239 | rules_str(rules, rule->rule.filename_off), | |
2240 | rule->rule.filename_line); | |
c26547d6 KS |
2241 | break; |
2242 | } | |
912541b0 | 2243 | case TK_A_ENV: { |
07845c14 | 2244 | char value_new[UTIL_NAME_SIZE]; |
cf697ec0 | 2245 | const char *name, *value_old; |
912541b0 | 2246 | |
cf697ec0 YW |
2247 | name = rules_str(rules, cur->key.attr_off); |
2248 | val = rules_str(rules, cur->key.value_off); | |
2249 | if (val[0] == '\0') { | |
07845c14 KS |
2250 | if (cur->key.op == OP_ADD) |
2251 | break; | |
cf697ec0 | 2252 | device_add_property(dev, name, NULL); |
07845c14 | 2253 | break; |
912541b0 | 2254 | } |
07845c14 | 2255 | |
cf697ec0 YW |
2256 | if (cur->key.op == OP_ADD && |
2257 | sd_device_get_property_value(dev, name, &value_old) >= 0) { | |
07845c14 KS |
2258 | char temp[UTIL_NAME_SIZE]; |
2259 | ||
2260 | /* append value separated by space */ | |
cf697ec0 | 2261 | udev_event_apply_format(event, val, temp, sizeof(temp), false); |
d5a89d7d | 2262 | strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL); |
07845c14 | 2263 | } else |
cf697ec0 | 2264 | udev_event_apply_format(event, val, value_new, sizeof(value_new), false); |
07845c14 | 2265 | |
cf697ec0 | 2266 | device_add_property(dev, name, value_new); |
912541b0 KS |
2267 | break; |
2268 | } | |
2269 | case TK_A_TAG: { | |
2270 | char tag[UTIL_PATH_SIZE]; | |
2271 | const char *p; | |
2272 | ||
e20a9171 | 2273 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag), false); |
4c701096 | 2274 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2275 | device_cleanup_tags(dev); |
912541b0 KS |
2276 | for (p = tag; *p != '\0'; p++) { |
2277 | if ((*p >= 'a' && *p <= 'z') || | |
2278 | (*p >= 'A' && *p <= 'Z') || | |
2279 | (*p >= '0' && *p <= '9') || | |
4c701096 | 2280 | IN_SET(*p, '-', '_')) |
912541b0 | 2281 | continue; |
b4ba2fe3 | 2282 | log_device_error(dev, "Ignoring invalid tag name '%s'", tag); |
912541b0 KS |
2283 | break; |
2284 | } | |
8e3ba377 | 2285 | if (cur->key.op == OP_REMOVE) |
cf697ec0 | 2286 | device_remove_tag(dev, tag); |
8e3ba377 | 2287 | else |
cf697ec0 | 2288 | device_add_tag(dev, tag); |
912541b0 KS |
2289 | break; |
2290 | } | |
2291 | case TK_A_NAME: { | |
912541b0 | 2292 | char name_str[UTIL_PATH_SIZE]; |
cf697ec0 | 2293 | const char *name; |
912541b0 KS |
2294 | int count; |
2295 | ||
cf697ec0 | 2296 | name = rules_str(rules, cur->key.value_off); |
912541b0 KS |
2297 | if (event->name_final) |
2298 | break; | |
2299 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2300 | event->name_final = true; | |
e20a9171 | 2301 | udev_event_apply_format(event, name, name_str, sizeof(name_str), false); |
4c701096 | 2302 | if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
912541b0 KS |
2303 | count = util_replace_chars(name_str, "/"); |
2304 | if (count > 0) | |
b4ba2fe3 | 2305 | log_device_debug(dev, "Replaced %i character(s) from result of NAME=\"%s\"", count, name); |
912541b0 | 2306 | } |
cf697ec0 YW |
2307 | if (sd_device_get_devnum(dev, NULL) >= 0 && |
2308 | (sd_device_get_devname(dev, &val) < 0 || | |
2309 | !streq(name_str, val + STRLEN("/dev/")))) { | |
b4ba2fe3 YW |
2310 | log_device_error(dev, "Kernel device nodes cannot be renamed, ignoring NAME=\"%s\"; please fix it in %s:%u\n", |
2311 | name, | |
2312 | rules_str(rules, rule->rule.filename_off), | |
2313 | rule->rule.filename_line); | |
6ada823a | 2314 | break; |
0ecfcbd4 | 2315 | } |
d838e145 YW |
2316 | if (free_and_strdup(&event->name, name_str) < 0) |
2317 | return log_oom(); | |
2318 | ||
b4ba2fe3 YW |
2319 | log_device_debug(dev, "NAME '%s' %s:%u", |
2320 | event->name, | |
2321 | rules_str(rules, rule->rule.filename_off), | |
2322 | rule->rule.filename_line); | |
912541b0 KS |
2323 | break; |
2324 | } | |
2325 | case TK_A_DEVLINK: { | |
cf697ec0 | 2326 | char temp[UTIL_PATH_SIZE], filename[UTIL_PATH_SIZE], *pos, *next; |
912541b0 KS |
2327 | int count = 0; |
2328 | ||
2329 | if (event->devlink_final) | |
2330 | break; | |
cf697ec0 | 2331 | if (sd_device_get_devnum(dev, NULL) < 0) |
912541b0 KS |
2332 | break; |
2333 | if (cur->key.op == OP_ASSIGN_FINAL) | |
2334 | event->devlink_final = true; | |
4c701096 | 2335 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
cf697ec0 | 2336 | device_cleanup_devlinks(dev); |
912541b0 KS |
2337 | |
2338 | /* allow multiple symlinks separated by spaces */ | |
0a10235e | 2339 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp), esc != ESCAPE_NONE); |
912541b0 KS |
2340 | if (esc == ESCAPE_UNSET) |
2341 | count = util_replace_chars(temp, "/ "); | |
2342 | else if (esc == ESCAPE_REPLACE) | |
2343 | count = util_replace_chars(temp, "/"); | |
2344 | if (count > 0) | |
b4ba2fe3 | 2345 | log_device_debug(dev, "Replaced %i character(s) from result of LINK" , count); |
912541b0 KS |
2346 | pos = temp; |
2347 | while (isspace(pos[0])) | |
2348 | pos++; | |
2349 | next = strchr(pos, ' '); | |
cf697ec0 | 2350 | while (next) { |
912541b0 | 2351 | next[0] = '\0'; |
b4ba2fe3 YW |
2352 | log_device_debug(dev, "LINK '%s' %s:%u", pos, |
2353 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
d5a89d7d | 2354 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2355 | device_add_devlink(dev, filename); |
912541b0 KS |
2356 | while (isspace(next[1])) |
2357 | next++; | |
2358 | pos = &next[1]; | |
2359 | next = strchr(pos, ' '); | |
2360 | } | |
2361 | if (pos[0] != '\0') { | |
b4ba2fe3 YW |
2362 | log_device_debug(dev, "LINK '%s' %s:%u", pos, |
2363 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
d5a89d7d | 2364 | strscpyl(filename, sizeof(filename), "/dev/", pos, NULL); |
cf697ec0 | 2365 | device_add_devlink(dev, filename); |
912541b0 KS |
2366 | } |
2367 | break; | |
2368 | } | |
2369 | case TK_A_ATTR: { | |
cf697ec0 | 2370 | char attr[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
fdd21be6 | 2371 | _cleanup_fclose_ FILE *f = NULL; |
cf697ec0 | 2372 | const char *key_name; |
912541b0 | 2373 | |
cf697ec0 | 2374 | key_name = rules_str(rules, cur->key.attr_off); |
3839535a | 2375 | if (util_resolve_subsys_kernel(key_name, attr, sizeof(attr), false) != 0 && |
cf697ec0 YW |
2376 | sd_device_get_syspath(dev, &val) >= 0) |
2377 | strscpyl(attr, sizeof(attr), val, "/", key_name, NULL); | |
912541b0 KS |
2378 | attr_subst_subdir(attr, sizeof(attr)); |
2379 | ||
e20a9171 | 2380 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
b4ba2fe3 YW |
2381 | log_device_debug(dev, "ATTR '%s' writing '%s' %s:%u", attr, value, |
2382 | rules_str(rules, rule->rule.filename_off), | |
2383 | rule->rule.filename_line); | |
47ef94ac | 2384 | f = fopen(attr, "we"); |
67e4b385 | 2385 | if (!f) |
b4ba2fe3 | 2386 | log_device_error_errno(dev, errno, "Failed to open ATTR{%s} for writing: %m", attr); |
fdd21be6 | 2387 | else if (fprintf(f, "%s", value) <= 0) |
b4ba2fe3 | 2388 | log_device_error_errno(dev, errno, "Failed to write ATTR{%s}: %m", attr); |
912541b0 KS |
2389 | break; |
2390 | } | |
f4cf2e5b | 2391 | case TK_A_SYSCTL: { |
cf697ec0 | 2392 | char filename[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE]; |
f4cf2e5b | 2393 | |
e20a9171 | 2394 | udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false); |
f4cf2e5b | 2395 | sysctl_normalize(filename); |
e20a9171 | 2396 | udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false); |
b4ba2fe3 YW |
2397 | log_device_debug(dev, "SYSCTL '%s' writing '%s' %s:%u", filename, value, |
2398 | rules_str(rules, rule->rule.filename_off), rule->rule.filename_line); | |
f4cf2e5b KS |
2399 | r = sysctl_write(filename, value); |
2400 | if (r < 0) | |
b4ba2fe3 | 2401 | log_device_error_errno(dev, r, "Failed to write SYSCTL{%s}='%s': %m", filename, value); |
f4cf2e5b KS |
2402 | break; |
2403 | } | |
83cd6b75 KS |
2404 | case TK_A_RUN_BUILTIN: |
2405 | case TK_A_RUN_PROGRAM: { | |
29448498 YW |
2406 | _cleanup_free_ char *cmd = NULL; |
2407 | ||
e924c60f YW |
2408 | if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
2409 | hashmap_clear_free_key(event->run_list); | |
29448498 YW |
2410 | |
2411 | r = hashmap_ensure_allocated(&event->run_list, NULL); | |
2412 | if (r < 0) | |
2413 | return log_oom(); | |
2414 | ||
2415 | cmd = strdup(rules_str(rules, cur->key.value_off)); | |
2416 | if (!cmd) | |
2417 | return log_oom(); | |
2418 | ||
2419 | r = hashmap_put(event->run_list, cmd, INT_TO_PTR(cur->key.builtin_cmd)); | |
2420 | if (r < 0) | |
2421 | return log_oom(); | |
2422 | ||
2423 | cmd = NULL; | |
83cd6b75 | 2424 | |
b4ba2fe3 YW |
2425 | log_device_debug(dev, "RUN '%s' %s:%u", |
2426 | rules_str(rules, cur->key.value_off), | |
2427 | rules_str(rules, rule->rule.filename_off), | |
2428 | rule->rule.filename_line); | |
912541b0 KS |
2429 | break; |
2430 | } | |
2431 | case TK_A_GOTO: | |
2432 | if (cur->key.rule_goto == 0) | |
2433 | break; | |
2434 | cur = &rules->tokens[cur->key.rule_goto]; | |
2435 | continue; | |
2436 | case TK_END: | |
d838e145 | 2437 | return 0; |
912541b0 KS |
2438 | |
2439 | case TK_M_PARENTS_MIN: | |
2440 | case TK_M_PARENTS_MAX: | |
2441 | case TK_M_MAX: | |
2442 | case TK_UNSET: | |
b4ba2fe3 | 2443 | log_device_error(dev, "Wrong type %u", cur->type); |
912541b0 KS |
2444 | goto nomatch; |
2445 | } | |
2446 | ||
2447 | cur++; | |
2448 | continue; | |
2449 | nomatch: | |
2450 | /* fast-forward to next rule */ | |
2451 | cur = rule + rule->rule.token_count; | |
912541b0 | 2452 | } |
d838e145 YW |
2453 | |
2454 | return 0; | |
6880b25d | 2455 | } |
761dfddc | 2456 | |
9a07157d | 2457 | int udev_rules_apply_static_dev_perms(UdevRules *rules) { |
912541b0 KS |
2458 | struct token *cur; |
2459 | struct token *rule; | |
2460 | uid_t uid = 0; | |
2461 | gid_t gid = 0; | |
2462 | mode_t mode = 0; | |
84b6ad70 TG |
2463 | _cleanup_strv_free_ char **tags = NULL; |
2464 | char **t; | |
2465 | FILE *f = NULL; | |
2466 | _cleanup_free_ char *path = NULL; | |
fdd21be6 | 2467 | int r; |
912541b0 | 2468 | |
67e4b385 | 2469 | if (!rules->tokens) |
84b6ad70 | 2470 | return 0; |
912541b0 KS |
2471 | |
2472 | cur = &rules->tokens[0]; | |
2473 | rule = cur; | |
2474 | for (;;) { | |
2475 | switch (cur->type) { | |
2476 | case TK_RULE: | |
2477 | /* current rule */ | |
2478 | rule = cur; | |
2479 | ||
2480 | /* skip rules without a static_node tag */ | |
2481 | if (!rule->rule.has_static_node) | |
2482 | goto next; | |
2483 | ||
2484 | uid = 0; | |
2485 | gid = 0; | |
2486 | mode = 0; | |
97b11eed | 2487 | tags = strv_free(tags); |
912541b0 KS |
2488 | break; |
2489 | case TK_A_OWNER_ID: | |
2490 | uid = cur->key.uid; | |
2491 | break; | |
2492 | case TK_A_GROUP_ID: | |
2493 | gid = cur->key.gid; | |
2494 | break; | |
2495 | case TK_A_MODE_ID: | |
2496 | mode = cur->key.mode; | |
84b6ad70 TG |
2497 | break; |
2498 | case TK_A_TAG: | |
2499 | r = strv_extend(&tags, rules_str(rules, cur->key.value_off)); | |
2500 | if (r < 0) | |
2501 | goto finish; | |
2502 | ||
912541b0 KS |
2503 | break; |
2504 | case TK_A_STATIC_NODE: { | |
84b6ad70 TG |
2505 | char device_node[UTIL_PATH_SIZE]; |
2506 | char tags_dir[UTIL_PATH_SIZE]; | |
2507 | char tag_symlink[UTIL_PATH_SIZE]; | |
912541b0 KS |
2508 | struct stat stats; |
2509 | ||
2510 | /* we assure, that the permissions tokens are sorted before the static token */ | |
ca2bb160 | 2511 | |
67e4b385 | 2512 | if (mode == 0 && uid == 0 && gid == 0 && !tags) |
912541b0 | 2513 | goto next; |
d6f116a7 | 2514 | |
84b6ad70 | 2515 | strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL); |
ca2bb160 KS |
2516 | if (stat(device_node, &stats) != 0) |
2517 | break; | |
2518 | if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) | |
2519 | break; | |
84b6ad70 | 2520 | |
d6f116a7 | 2521 | /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */ |
84b6ad70 | 2522 | if (tags) { |
84b6ad70 TG |
2523 | STRV_FOREACH(t, tags) { |
2524 | _cleanup_free_ char *unescaped_filename = NULL; | |
2525 | ||
2526 | strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL); | |
2527 | r = mkdir_p(tags_dir, 0755); | |
f647962d | 2528 | if (r < 0) |
8c19dc54 | 2529 | return log_error_errno(r, "Failed to create %s: %m", tags_dir); |
84b6ad70 TG |
2530 | |
2531 | unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/."); | |
2532 | ||
2533 | strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL); | |
2534 | r = symlink(device_node, tag_symlink); | |
4a62c710 | 2535 | if (r < 0 && errno != EEXIST) |
8c19dc54 | 2536 | return log_error_errno(errno, "Failed to create symlink %s -> %s: %m", |
4a62c710 | 2537 | tag_symlink, device_node); |
84b6ad70 TG |
2538 | } |
2539 | } | |
2540 | ||
15a72200 TG |
2541 | /* don't touch the permissions if only the tags were set */ |
2542 | if (mode == 0 && uid == 0 && gid == 0) | |
d6f116a7 KS |
2543 | break; |
2544 | ||
912541b0 KS |
2545 | if (mode == 0) { |
2546 | if (gid > 0) | |
2547 | mode = 0660; | |
2548 | else | |
2549 | mode = 0600; | |
2550 | } | |
2551 | if (mode != (stats.st_mode & 01777)) { | |
490f0087 | 2552 | r = chmod(device_node, mode); |
25f027c5 ZJS |
2553 | if (r < 0) |
2554 | return log_error_errno(errno, "Failed to chmod '%s' %#o: %m", | |
2555 | device_node, mode); | |
2556 | else | |
9f6445e3 | 2557 | log_debug("chmod '%s' %#o", device_node, mode); |
912541b0 KS |
2558 | } |
2559 | ||
2560 | if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { | |
490f0087 | 2561 | r = chown(device_node, uid, gid); |
25f027c5 ZJS |
2562 | if (r < 0) |
2563 | return log_error_errno(errno, "Failed to chown '%s' %u %u: %m", | |
2564 | device_node, uid, gid); | |
2565 | else | |
9f6445e3 | 2566 | log_debug("chown '%s' %u %u", device_node, uid, gid); |
912541b0 KS |
2567 | } |
2568 | ||
84b6ad70 | 2569 | utimensat(AT_FDCWD, device_node, NULL, 0); |
912541b0 KS |
2570 | break; |
2571 | } | |
2572 | case TK_END: | |
84b6ad70 | 2573 | goto finish; |
912541b0 KS |
2574 | } |
2575 | ||
2576 | cur++; | |
2577 | continue; | |
761dfddc | 2578 | next: |
912541b0 KS |
2579 | /* fast-forward to next rule */ |
2580 | cur = rule + rule->rule.token_count; | |
2581 | continue; | |
2582 | } | |
84b6ad70 TG |
2583 | |
2584 | finish: | |
2585 | if (f) { | |
2586 | fflush(f); | |
2587 | fchmod(fileno(f), 0644); | |
2588 | if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) { | |
fdd21be6 ZJS |
2589 | unlink_noerrno("/run/udev/static_node-tags"); |
2590 | unlink_noerrno(path); | |
2591 | return -errno; | |
84b6ad70 | 2592 | } |
84b6ad70 TG |
2593 | } |
2594 | ||
fdd21be6 | 2595 | return 0; |
761dfddc | 2596 | } |