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f13467ec | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2232cac8 | 2 | |
2232cac8 | 3 | #include <ctype.h> |
2232cac8 | 4 | |
b5efdb8a | 5 | #include "alloc-util.h" |
4801d8af | 6 | #include "architecture.h" |
2c21044f | 7 | #include "conf-files.h" |
acfbd71c | 8 | #include "conf-parser.h" |
6e2e83b4 | 9 | #include "confidential-virt.h" |
28db6fbf | 10 | #include "constants.h" |
a1130022 | 11 | #include "device-private.h" |
480ecb7d | 12 | #include "device-util.h" |
8fb3f009 | 13 | #include "dirent-util.h" |
3ffd4af2 | 14 | #include "fd-util.h" |
fae0f8a0 | 15 | #include "fileio.h" |
4b3b5bc7 | 16 | #include "format-util.h" |
fdd21be6 | 17 | #include "fs-util.h" |
7d50b32a | 18 | #include "glob-util.h" |
e79c228b | 19 | #include "list.h" |
5ea78a39 | 20 | #include "mkdir.h" |
b4d885f0 | 21 | #include "netif-naming-scheme.h" |
25de7aa7 | 22 | #include "nulstr-util.h" |
b4ba2fe3 | 23 | #include "parse-util.h" |
4f5dd394 | 24 | #include "path-util.h" |
88b013b2 | 25 | #include "proc-cmdline.h" |
8fcde012 | 26 | #include "stat-util.h" |
84b6ad70 | 27 | #include "strv.h" |
5ea78a39 | 28 | #include "strxcpyx.h" |
f4cf2e5b | 29 | #include "sysctl-util.h" |
1a0bd015 | 30 | #include "syslog-util.h" |
07a26e42 | 31 | #include "udev-builtin.h" |
25de7aa7 | 32 | #include "udev-event.h" |
26dd37f6 | 33 | #include "udev-node.h" |
25de7aa7 | 34 | #include "udev-rules.h" |
b428efa5 | 35 | #include "udev-util.h" |
b1d4f8e1 | 36 | #include "user-util.h" |
4801d8af | 37 | #include "virt.h" |
2232cac8 | 38 | |
29162ba0 | 39 | #define RULES_DIRS ((const char* const*) CONF_PATHS_STRV("udev/rules.d")) |
c7521974 | 40 | |
e79c228b ZJS |
41 | typedef enum { |
42 | OP_MATCH, /* == */ | |
43 | OP_NOMATCH, /* != */ | |
44 | OP_ADD, /* += */ | |
45 | OP_REMOVE, /* -= */ | |
46 | OP_ASSIGN, /* = */ | |
47 | OP_ASSIGN_FINAL, /* := */ | |
48 | _OP_TYPE_MAX, | |
2d93c20e | 49 | _OP_TYPE_INVALID = -EINVAL, |
e79c228b ZJS |
50 | } UdevRuleOperatorType; |
51 | ||
52 | typedef enum { | |
067cc51f YW |
53 | MATCH_TYPE_EMPTY, /* empty string */ |
54 | MATCH_TYPE_PLAIN, /* no special characters */ | |
55 | MATCH_TYPE_PLAIN_WITH_EMPTY, /* no special characters with empty string, e.g., "|foo" */ | |
56 | MATCH_TYPE_GLOB, /* shell globs ?,*,[] */ | |
57 | MATCH_TYPE_GLOB_WITH_EMPTY, /* shell globs ?,*,[] with empty string, e.g., "|foo*" */ | |
58 | MATCH_TYPE_SUBSYSTEM, /* "subsystem", "bus", or "class" */ | |
e79c228b | 59 | _MATCH_TYPE_MAX, |
2d93c20e | 60 | _MATCH_TYPE_INVALID = -EINVAL, |
e79c228b ZJS |
61 | } UdevRuleMatchType; |
62 | ||
63 | typedef enum { | |
64 | SUBST_TYPE_PLAIN, /* no substitution */ | |
65 | SUBST_TYPE_FORMAT, /* % or $ */ | |
66 | SUBST_TYPE_SUBSYS, /* "[<SUBSYSTEM>/<KERNEL>]<attribute>" format */ | |
67 | _SUBST_TYPE_MAX, | |
2d93c20e | 68 | _SUBST_TYPE_INVALID = -EINVAL, |
e79c228b ZJS |
69 | } UdevRuleSubstituteType; |
70 | ||
71 | typedef enum { | |
72 | /* lvalues which take match or nomatch operator */ | |
73 | TK_M_ACTION, /* string, device_get_action() */ | |
74 | TK_M_DEVPATH, /* path, sd_device_get_devpath() */ | |
75 | TK_M_KERNEL, /* string, sd_device_get_sysname() */ | |
76 | TK_M_DEVLINK, /* strv, sd_device_get_devlink_first(), sd_device_get_devlink_next() */ | |
77 | TK_M_NAME, /* string, name of network interface */ | |
78 | TK_M_ENV, /* string, device property, takes key through attribute */ | |
4801d8af | 79 | TK_M_CONST, /* string, system-specific hard-coded constant */ |
e79c228b ZJS |
80 | TK_M_TAG, /* strv, sd_device_get_tag_first(), sd_device_get_tag_next() */ |
81 | TK_M_SUBSYSTEM, /* string, sd_device_get_subsystem() */ | |
82 | TK_M_DRIVER, /* string, sd_device_get_driver() */ | |
1223227f | 83 | TK_M_ATTR, /* string, takes filename through attribute, sd_device_get_sysattr_value(), udev_resolve_subsys_kernel(), etc. */ |
e79c228b ZJS |
84 | TK_M_SYSCTL, /* string, takes kernel parameter through attribute */ |
85 | ||
162392b7 | 86 | /* matches parent parameters */ |
e79c228b ZJS |
87 | TK_M_PARENTS_KERNEL, /* string */ |
88 | TK_M_PARENTS_SUBSYSTEM, /* string */ | |
89 | TK_M_PARENTS_DRIVER, /* string */ | |
90 | TK_M_PARENTS_ATTR, /* string */ | |
91 | TK_M_PARENTS_TAG, /* strv */ | |
92 | ||
93 | TK_M_TEST, /* path, optionally mode_t can be specified by attribute, test the existence of a file */ | |
94 | TK_M_PROGRAM, /* string, execute a program */ | |
95 | TK_M_IMPORT_FILE, /* path */ | |
96 | TK_M_IMPORT_PROGRAM, /* string, import properties from the result of program */ | |
97 | TK_M_IMPORT_BUILTIN, /* string, import properties from the result of built-in command */ | |
98 | TK_M_IMPORT_DB, /* string, import properties from database */ | |
99 | TK_M_IMPORT_CMDLINE, /* string, kernel command line */ | |
100 | TK_M_IMPORT_PARENT, /* string, parent property */ | |
101 | TK_M_RESULT, /* string, result of TK_M_PROGRAM */ | |
102 | ||
103 | #define _TK_M_MAX (TK_M_RESULT + 1) | |
104 | #define _TK_A_MIN _TK_M_MAX | |
105 | ||
106 | /* lvalues which take one of assign operators */ | |
107 | TK_A_OPTIONS_STRING_ESCAPE_NONE, /* no argument */ | |
108 | TK_A_OPTIONS_STRING_ESCAPE_REPLACE, /* no argument */ | |
109 | TK_A_OPTIONS_DB_PERSIST, /* no argument */ | |
110 | TK_A_OPTIONS_INOTIFY_WATCH, /* boolean */ | |
111 | TK_A_OPTIONS_DEVLINK_PRIORITY, /* int */ | |
1a0bd015 | 112 | TK_A_OPTIONS_LOG_LEVEL, /* string of log level or "reset" */ |
e79c228b ZJS |
113 | TK_A_OWNER, /* user name */ |
114 | TK_A_GROUP, /* group name */ | |
115 | TK_A_MODE, /* mode string */ | |
116 | TK_A_OWNER_ID, /* uid_t */ | |
117 | TK_A_GROUP_ID, /* gid_t */ | |
118 | TK_A_MODE_ID, /* mode_t */ | |
119 | TK_A_TAG, /* string */ | |
120 | TK_A_OPTIONS_STATIC_NODE, /* device path, /dev/... */ | |
121 | TK_A_SECLABEL, /* string with attribute */ | |
122 | TK_A_ENV, /* string with attribute */ | |
123 | TK_A_NAME, /* ifname */ | |
124 | TK_A_DEVLINK, /* string */ | |
125 | TK_A_ATTR, /* string with attribute */ | |
126 | TK_A_SYSCTL, /* string with attribute */ | |
127 | TK_A_RUN_BUILTIN, /* string */ | |
128 | TK_A_RUN_PROGRAM, /* string */ | |
129 | ||
130 | _TK_TYPE_MAX, | |
2d93c20e | 131 | _TK_TYPE_INVALID = -EINVAL, |
e79c228b ZJS |
132 | } UdevRuleTokenType; |
133 | ||
134 | typedef enum { | |
135 | LINE_HAS_NAME = 1 << 0, /* has NAME= */ | |
136 | LINE_HAS_DEVLINK = 1 << 1, /* has SYMLINK=, OWNER=, GROUP= or MODE= */ | |
137 | LINE_HAS_STATIC_NODE = 1 << 2, /* has OPTIONS=static_node */ | |
138 | LINE_HAS_GOTO = 1 << 3, /* has GOTO= */ | |
139 | LINE_HAS_LABEL = 1 << 4, /* has LABEL= */ | |
140 | LINE_UPDATE_SOMETHING = 1 << 5, /* has other TK_A_* or TK_M_IMPORT tokens */ | |
7a771d1d | 141 | LINE_IS_REFERENCED = 1 << 6, /* is referenced by GOTO */ |
e79c228b ZJS |
142 | } UdevRuleLineType; |
143 | ||
144 | typedef struct UdevRuleFile UdevRuleFile; | |
145 | typedef struct UdevRuleLine UdevRuleLine; | |
146 | typedef struct UdevRuleToken UdevRuleToken; | |
147 | ||
148 | struct UdevRuleToken { | |
149 | UdevRuleTokenType type:8; | |
150 | UdevRuleOperatorType op:8; | |
151 | UdevRuleMatchType match_type:8; | |
152 | UdevRuleSubstituteType attr_subst_type:7; | |
153 | bool attr_match_remove_trailing_whitespace:1; | |
154 | const char *value; | |
155 | void *data; | |
c06ab041 YW |
156 | |
157 | UdevRuleLine *rule_line; | |
e79c228b ZJS |
158 | LIST_FIELDS(UdevRuleToken, tokens); |
159 | }; | |
160 | ||
161 | struct UdevRuleLine { | |
162 | char *line; | |
163 | unsigned line_number; | |
164 | UdevRuleLineType type; | |
165 | ||
166 | const char *label; | |
167 | const char *goto_label; | |
168 | UdevRuleLine *goto_line; | |
169 | ||
170 | UdevRuleFile *rule_file; | |
e79c228b ZJS |
171 | LIST_HEAD(UdevRuleToken, tokens); |
172 | LIST_FIELDS(UdevRuleLine, rule_lines); | |
173 | }; | |
174 | ||
175 | struct UdevRuleFile { | |
176 | char *filename; | |
c06ab041 YW |
177 | unsigned issues; /* used by "udevadm verify" */ |
178 | ||
179 | UdevRules *rules; | |
e79c228b ZJS |
180 | LIST_HEAD(UdevRuleLine, rule_lines); |
181 | LIST_FIELDS(UdevRuleFile, rule_files); | |
182 | }; | |
183 | ||
184 | struct UdevRules { | |
e79c228b ZJS |
185 | ResolveNameTiming resolve_name_timing; |
186 | Hashmap *known_users; | |
187 | Hashmap *known_groups; | |
acfbd71c | 188 | Hashmap *stats_by_path; |
e79c228b ZJS |
189 | LIST_HEAD(UdevRuleFile, rule_files); |
190 | }; | |
191 | ||
c06ab041 YW |
192 | #define LINE_GET_RULES(line) \ |
193 | ASSERT_PTR(ASSERT_PTR(ASSERT_PTR(line)->rule_file)->rules) | |
194 | ||
d4114f70 ZJS |
195 | /*** Logging helpers ***/ |
196 | ||
c06ab041 | 197 | #define log_udev_rule_internal(device, file, line_nr, level, error, fmt, ...) \ |
d4114f70 | 198 | ({ \ |
4f5de157 | 199 | int _lv = (level); \ |
2aa5fe5e | 200 | sd_device *_dev = (device); \ |
c06ab041 | 201 | UdevRuleFile *_f = (file); \ |
d4114f70 ZJS |
202 | const char *_n = _f ? _f->filename : NULL; \ |
203 | \ | |
2aa5fe5e YW |
204 | if (!_dev && _f) \ |
205 | _f->issues |= (1U << _lv); \ | |
206 | \ | |
8d1c9489 | 207 | log_device_full_errno_zerook( \ |
2aa5fe5e | 208 | _dev, _lv, error, "%s:%u " fmt, \ |
c06ab041 | 209 | strna(_n), line_nr, \ |
8d1c9489 ZJS |
210 | ##__VA_ARGS__); \ |
211 | }) | |
212 | ||
c06ab041 YW |
213 | /* Mainly used when applying tokens to the event device. */ |
214 | #define log_event_full_errno_zerook(device, token, ...) \ | |
215 | ({ \ | |
216 | UdevRuleToken *_t = (token); \ | |
217 | UdevRuleLine *_l = _t ? _t->rule_line : NULL; \ | |
218 | \ | |
219 | log_udev_rule_internal( \ | |
220 | device, \ | |
221 | _l ? _l->rule_file : NULL, \ | |
222 | _l ? _l->line_number : 0, \ | |
223 | __VA_ARGS__); \ | |
224 | }) | |
225 | ||
226 | #define log_event_full_errno(device, token, level, error, ...) \ | |
8d1c9489 ZJS |
227 | ({ \ |
228 | int _error = (error); \ | |
229 | ASSERT_NON_ZERO(_error); \ | |
c06ab041 YW |
230 | log_event_full_errno_zerook( \ |
231 | device, token, level, _error, ##__VA_ARGS__); \ | |
d4114f70 ZJS |
232 | }) |
233 | ||
c06ab041 YW |
234 | #define log_event_full(device, token, level, ...) (void) log_event_full_errno_zerook(device, token, level, 0, __VA_ARGS__) |
235 | ||
236 | #define log_event_debug(device, token, ...) log_event_full(device, token, LOG_DEBUG, __VA_ARGS__) | |
237 | #define log_event_info(device, token, ...) log_event_full(device, token, LOG_INFO, __VA_ARGS__) | |
238 | #define log_event_notice(device, token, ...) log_event_full(device, token, LOG_NOTICE, __VA_ARGS__) | |
239 | #define log_event_warning(device, token, ...) log_event_full(device, token, LOG_WARNING, __VA_ARGS__) | |
240 | #define log_event_error(device, token, ...) log_event_full(device, token, LOG_ERR, __VA_ARGS__) | |
241 | ||
242 | #define log_event_debug_errno(device, token, error, ...) log_event_full_errno(device, token, LOG_DEBUG, error, __VA_ARGS__) | |
243 | #define log_event_info_errno(device, token, error, ...) log_event_full_errno(device, token, LOG_INFO, error, __VA_ARGS__) | |
244 | #define log_event_notice_errno(device, token, error, ...) log_event_full_errno(device, token, LOG_NOTICE, error, __VA_ARGS__) | |
245 | #define log_event_warning_errno(device, token, error, ...) log_event_full_errno(device, token, LOG_WARNING, error, __VA_ARGS__) | |
246 | #define log_event_error_errno(device, token, error, ...) log_event_full_errno(device, token, LOG_ERR, error, __VA_ARGS__) | |
247 | ||
248 | /* Mainly used when parsing .rules files. */ | |
249 | #define log_file_full_errno_zerook(...) \ | |
250 | log_udev_rule_internal(NULL, __VA_ARGS__) | |
251 | ||
252 | #define log_file_error(file, line_nr, ...) \ | |
253 | log_file_full_errno_zerook(file, line_nr, LOG_ERR, 0, __VA_ARGS__) | |
254 | ||
255 | #define log_line_full_errno_zerook(line, ...) \ | |
4f5de157 | 256 | ({ \ |
c06ab041 YW |
257 | UdevRuleLine *_l = (line); \ |
258 | log_file_full_errno_zerook( \ | |
259 | _l ? _l->rule_file : NULL, \ | |
260 | _l ? _l->line_number : 0, \ | |
261 | __VA_ARGS__); \ | |
4f5de157 DL |
262 | }) |
263 | ||
c06ab041 | 264 | #define log_line_full_errno(line, level, error, ...) \ |
4f5de157 DL |
265 | ({ \ |
266 | int _error = (error); \ | |
267 | ASSERT_NON_ZERO(_error); \ | |
268 | log_line_full_errno_zerook( \ | |
c06ab041 | 269 | line, level, _error, ##__VA_ARGS__); \ |
4f5de157 DL |
270 | }) |
271 | ||
c06ab041 YW |
272 | #define log_line_full(line, level, ...) (void) log_line_full_errno_zerook(line, level, 0, __VA_ARGS__) |
273 | ||
274 | #define log_line_debug(line, ...) log_line_full(line, LOG_DEBUG, __VA_ARGS__) | |
275 | #define log_line_info(line, ...) log_line_full(line, LOG_INFO, __VA_ARGS__) | |
276 | #define log_line_notice(line, ...) log_line_full(line, LOG_NOTICE, __VA_ARGS__) | |
277 | #define log_line_warning(line, ...) log_line_full(line, LOG_WARNING, __VA_ARGS__) | |
278 | #define log_line_error(line, ...) log_line_full(line, LOG_ERR, __VA_ARGS__) | |
279 | ||
280 | #define log_line_debug_errno(line, error, ...) log_line_full_errno(line, LOG_DEBUG, error, __VA_ARGS__) | |
281 | #define log_line_info_errno(line, error, ...) log_line_full_errno(line, LOG_INFO, error, __VA_ARGS__) | |
282 | #define log_line_notice_errno(line, error, ...) log_line_full_errno(line, LOG_NOTICE, error, __VA_ARGS__) | |
283 | #define log_line_warning_errno(line, error, ...) log_line_full_errno(line, LOG_WARNING, error, __VA_ARGS__) | |
284 | #define log_line_error_errno(line, error, ...) log_line_full_errno(line, LOG_ERR, error, __VA_ARGS__) | |
4f5de157 | 285 | |
c06ab041 YW |
286 | #define _log_line_invalid_token(line, key, type) \ |
287 | log_line_error_errno(line, SYNTHETIC_ERRNO(EINVAL), \ | |
288 | "Invalid %s for %s.", type, key) | |
4f5de157 | 289 | |
c06ab041 YW |
290 | #define log_line_invalid_op(line, key) _log_line_invalid_token(line, key, "operator") |
291 | #define log_line_invalid_attr(line, key) _log_line_invalid_token(line, key, "attribute") | |
292 | ||
293 | #define log_line_invalid_attr_format(line, key, attr, offset, hint) \ | |
294 | log_line_error_errno(line, SYNTHETIC_ERRNO(EINVAL), \ | |
295 | "Invalid attribute \"%s\" for %s (char %zu: %s), ignoring.", \ | |
296 | attr, key, offset, hint) | |
297 | #define log_line_invalid_value(line, key, value, offset, hint) \ | |
298 | log_line_error_errno(line, SYNTHETIC_ERRNO(EINVAL), \ | |
299 | "Invalid value \"%s\" for %s (char %zu: %s), ignoring.", \ | |
300 | value, key, offset, hint) | |
4f5de157 | 301 | |
c06ab041 YW |
302 | static void log_unknown_owner(sd_device *dev, UdevRuleLine *line, int error, const char *entity, const char *name) { |
303 | assert(line); | |
304 | ASSERT_NON_ZERO(error); | |
305 | ||
d4114f70 | 306 | if (IN_SET(abs(error), ENOENT, ESRCH)) |
c06ab041 | 307 | log_udev_rule_internal(dev, line->rule_file, line->line_number, LOG_ERR, error, |
4134614f | 308 | "Unknown %s '%s', ignoring.", entity, name); |
d4114f70 | 309 | else |
c06ab041 YW |
310 | log_udev_rule_internal(dev, line->rule_file, line->line_number, LOG_ERR, error, |
311 | "Failed to resolve %s '%s', ignoring: %m", entity, name); | |
d4114f70 ZJS |
312 | } |
313 | ||
e5a34948 YW |
314 | static void log_event_truncated( |
315 | sd_device *dev, | |
316 | UdevRuleToken *token, | |
317 | const char *what, | |
318 | const char *format, | |
319 | const char *key, | |
320 | bool is_match) { | |
321 | ||
322 | if (is_match) | |
323 | log_event_debug(dev, token, | |
324 | "The %s is truncated while substituting into '%s', " | |
325 | "assuming the %s key does not match.", | |
326 | what, format, key); | |
327 | else | |
328 | log_event_warning(dev, token, | |
329 | "The %s is truncated while substituting into '%s', " | |
330 | "refusing to apply the %s key.", | |
331 | what, format, key); | |
332 | } | |
333 | ||
d4114f70 ZJS |
334 | /*** Other functions ***/ |
335 | ||
a0244c5d YW |
336 | static UdevRuleToken *udev_rule_token_free(UdevRuleToken *token) { |
337 | if (!token) | |
338 | return NULL; | |
339 | ||
340 | if (token->rule_line) | |
341 | LIST_REMOVE(tokens, token->rule_line->tokens, token); | |
342 | ||
343 | return mfree(token); | |
915bf0f6 KS |
344 | } |
345 | ||
a0244c5d YW |
346 | DEFINE_TRIVIAL_CLEANUP_FUNC(UdevRuleToken*, udev_rule_token_free); |
347 | ||
25de7aa7 | 348 | static void udev_rule_line_clear_tokens(UdevRuleLine *rule_line) { |
25de7aa7 | 349 | assert(rule_line); |
4052400f | 350 | |
80a226b2 | 351 | LIST_FOREACH(tokens, i, rule_line->tokens) |
25de7aa7 | 352 | udev_rule_token_free(i); |
5d6a1fa6 KS |
353 | } |
354 | ||
a0244c5d | 355 | static UdevRuleLine *udev_rule_line_free(UdevRuleLine *rule_line) { |
25de7aa7 | 356 | if (!rule_line) |
75db809a | 357 | return NULL; |
912541b0 | 358 | |
25de7aa7 | 359 | udev_rule_line_clear_tokens(rule_line); |
c7521974 | 360 | |
c06ab041 | 361 | if (rule_line->rule_file) |
25de7aa7 | 362 | LIST_REMOVE(rule_lines, rule_line->rule_file->rule_lines, rule_line); |
25de7aa7 YW |
363 | |
364 | free(rule_line->line); | |
75db809a | 365 | return mfree(rule_line); |
4052400f | 366 | } |
154a7b84 | 367 | |
25de7aa7 YW |
368 | DEFINE_TRIVIAL_CLEANUP_FUNC(UdevRuleLine*, udev_rule_line_free); |
369 | ||
a0244c5d | 370 | static UdevRuleFile *udev_rule_file_free(UdevRuleFile *rule_file) { |
25de7aa7 | 371 | if (!rule_file) |
a0244c5d | 372 | return NULL; |
25de7aa7 | 373 | |
80a226b2 | 374 | LIST_FOREACH(rule_lines, i, rule_file->rule_lines) |
25de7aa7 | 375 | udev_rule_line_free(i); |
912541b0 | 376 | |
a0244c5d YW |
377 | if (rule_file->rules) |
378 | LIST_REMOVE(rule_files, rule_file->rules->rule_files, rule_file); | |
379 | ||
25de7aa7 | 380 | free(rule_file->filename); |
a0244c5d | 381 | return mfree(rule_file); |
4052400f | 382 | } |
530727ae | 383 | |
a0244c5d YW |
384 | DEFINE_TRIVIAL_CLEANUP_FUNC(UdevRuleFile*, udev_rule_file_free); |
385 | ||
25de7aa7 | 386 | UdevRules *udev_rules_free(UdevRules *rules) { |
25de7aa7 YW |
387 | if (!rules) |
388 | return NULL; | |
389 | ||
80a226b2 | 390 | LIST_FOREACH(rule_files, i, rules->rule_files) |
25de7aa7 YW |
391 | udev_rule_file_free(i); |
392 | ||
393 | hashmap_free_free_key(rules->known_users); | |
394 | hashmap_free_free_key(rules->known_groups); | |
acfbd71c | 395 | hashmap_free(rules->stats_by_path); |
25de7aa7 | 396 | return mfree(rules); |
c7521974 | 397 | } |
a27cd06c | 398 | |
c06ab041 YW |
399 | static int rule_resolve_user(UdevRuleLine *rule_line, const char *name, uid_t *ret) { |
400 | Hashmap **known_users = &LINE_GET_RULES(rule_line)->known_users; | |
25de7aa7 YW |
401 | _cleanup_free_ char *n = NULL; |
402 | uid_t uid; | |
403 | void *val; | |
23bf8dd7 | 404 | int r; |
912541b0 | 405 | |
25de7aa7 | 406 | assert(name); |
c06ab041 | 407 | assert(ret); |
25de7aa7 | 408 | |
c06ab041 | 409 | val = hashmap_get(*known_users, name); |
25de7aa7 YW |
410 | if (val) { |
411 | *ret = PTR_TO_UID(val); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | r = get_user_creds(&name, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); | |
416 | if (r < 0) { | |
c06ab041 | 417 | log_unknown_owner(NULL, rule_line, r, "user", name); |
25de7aa7 YW |
418 | *ret = UID_INVALID; |
419 | return 0; | |
912541b0 | 420 | } |
912541b0 | 421 | |
25de7aa7 YW |
422 | n = strdup(name); |
423 | if (!n) | |
530727ae YW |
424 | return -ENOMEM; |
425 | ||
c06ab041 | 426 | r = hashmap_ensure_put(known_users, &string_hash_ops, n, UID_TO_PTR(uid)); |
25de7aa7 YW |
427 | if (r < 0) |
428 | return r; | |
429 | ||
430 | TAKE_PTR(n); | |
431 | *ret = uid; | |
432 | return 0; | |
154a7b84 KS |
433 | } |
434 | ||
c06ab041 YW |
435 | static int rule_resolve_group(UdevRuleLine *rule_line, const char *name, gid_t *ret) { |
436 | Hashmap **known_groups = &LINE_GET_RULES(rule_line)->known_groups; | |
25de7aa7 YW |
437 | _cleanup_free_ char *n = NULL; |
438 | gid_t gid; | |
439 | void *val; | |
23bf8dd7 | 440 | int r; |
912541b0 | 441 | |
25de7aa7 | 442 | assert(name); |
c06ab041 | 443 | assert(ret); |
25de7aa7 | 444 | |
c06ab041 | 445 | val = hashmap_get(*known_groups, name); |
25de7aa7 YW |
446 | if (val) { |
447 | *ret = PTR_TO_GID(val); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | r = get_group_creds(&name, &gid, USER_CREDS_ALLOW_MISSING); | |
452 | if (r < 0) { | |
c06ab041 | 453 | log_unknown_owner(NULL, rule_line, r, "group", name); |
25de7aa7 YW |
454 | *ret = GID_INVALID; |
455 | return 0; | |
912541b0 | 456 | } |
912541b0 | 457 | |
25de7aa7 YW |
458 | n = strdup(name); |
459 | if (!n) | |
530727ae YW |
460 | return -ENOMEM; |
461 | ||
c06ab041 | 462 | r = hashmap_ensure_put(known_groups, &string_hash_ops, n, GID_TO_PTR(gid)); |
25de7aa7 YW |
463 | if (r < 0) |
464 | return r; | |
465 | ||
466 | TAKE_PTR(n); | |
467 | *ret = gid; | |
468 | return 0; | |
154a7b84 KS |
469 | } |
470 | ||
25de7aa7 YW |
471 | static UdevRuleSubstituteType rule_get_substitution_type(const char *str) { |
472 | assert(str); | |
912541b0 | 473 | |
25de7aa7 YW |
474 | if (str[0] == '[') |
475 | return SUBST_TYPE_SUBSYS; | |
476 | if (strchr(str, '%') || strchr(str, '$')) | |
477 | return SUBST_TYPE_FORMAT; | |
478 | return SUBST_TYPE_PLAIN; | |
479 | } | |
912541b0 | 480 | |
5004aa84 DL |
481 | static bool type_has_nulstr_value(UdevRuleTokenType type) { |
482 | return type < TK_M_TEST || type == TK_M_RESULT; | |
483 | } | |
484 | ||
25de7aa7 | 485 | static int rule_line_add_token(UdevRuleLine *rule_line, UdevRuleTokenType type, UdevRuleOperatorType op, char *value, void *data) { |
a0244c5d | 486 | _cleanup_(udev_rule_token_freep) UdevRuleToken *token = NULL; |
25de7aa7 YW |
487 | UdevRuleMatchType match_type = _MATCH_TYPE_INVALID; |
488 | UdevRuleSubstituteType subst_type = _SUBST_TYPE_INVALID; | |
489 | bool remove_trailing_whitespace = false; | |
490 | size_t len; | |
912541b0 | 491 | |
25de7aa7 YW |
492 | assert(rule_line); |
493 | assert(type >= 0 && type < _TK_TYPE_MAX); | |
494 | assert(op >= 0 && op < _OP_TYPE_MAX); | |
495 | ||
496 | if (type < _TK_M_MAX) { | |
497 | assert(value); | |
498 | assert(IN_SET(op, OP_MATCH, OP_NOMATCH)); | |
499 | ||
500 | if (type == TK_M_SUBSYSTEM && STR_IN_SET(value, "subsystem", "bus", "class")) | |
501 | match_type = MATCH_TYPE_SUBSYSTEM; | |
502 | else if (isempty(value)) | |
503 | match_type = MATCH_TYPE_EMPTY; | |
504 | else if (streq(value, "?*")) { | |
505 | /* Convert KEY=="?*" -> KEY!="" */ | |
506 | match_type = MATCH_TYPE_EMPTY; | |
507 | op = op == OP_MATCH ? OP_NOMATCH : OP_MATCH; | |
508 | } else if (string_is_glob(value)) | |
509 | match_type = MATCH_TYPE_GLOB; | |
510 | else | |
511 | match_type = MATCH_TYPE_PLAIN; | |
912541b0 | 512 | |
5004aa84 | 513 | if (type_has_nulstr_value(type)) { |
25de7aa7 | 514 | /* Convert value string to nulstr. */ |
067cc51f YW |
515 | bool bar = true, empty = false; |
516 | char *a, *b; | |
517 | ||
518 | for (a = b = value; *a != '\0'; a++) { | |
519 | if (*a != '|') { | |
520 | *b++ = *a; | |
521 | bar = false; | |
522 | } else { | |
523 | if (bar) | |
524 | empty = true; | |
525 | else | |
526 | *b++ = '\0'; | |
527 | bar = true; | |
528 | } | |
529 | } | |
530 | *b = '\0'; | |
1e67a9c2 YG |
531 | |
532 | /* Make sure the value is end, so NULSTR_FOREACH can read correct match */ | |
533 | if (b < a) | |
534 | b[1] = '\0'; | |
535 | ||
067cc51f YW |
536 | if (bar) |
537 | empty = true; | |
538 | ||
539 | if (empty) { | |
540 | if (match_type == MATCH_TYPE_GLOB) | |
541 | match_type = MATCH_TYPE_GLOB_WITH_EMPTY; | |
542 | if (match_type == MATCH_TYPE_PLAIN) | |
543 | match_type = MATCH_TYPE_PLAIN_WITH_EMPTY; | |
25de7aa7 YW |
544 | } |
545 | } | |
912541b0 KS |
546 | } |
547 | ||
25de7aa7 YW |
548 | if (IN_SET(type, TK_M_ATTR, TK_M_PARENTS_ATTR)) { |
549 | assert(value); | |
550 | assert(data); | |
be4bedd1 | 551 | |
25de7aa7 YW |
552 | len = strlen(value); |
553 | if (len > 0 && !isspace(value[len - 1])) | |
554 | remove_trailing_whitespace = true; | |
912541b0 | 555 | |
af2e52f4 | 556 | subst_type = rule_get_substitution_type(data); |
25de7aa7 | 557 | } |
fae0f8a0 | 558 | |
25de7aa7 YW |
559 | token = new(UdevRuleToken, 1); |
560 | if (!token) | |
561 | return -ENOMEM; | |
fae0f8a0 | 562 | |
25de7aa7 YW |
563 | *token = (UdevRuleToken) { |
564 | .type = type, | |
565 | .op = op, | |
566 | .value = value, | |
567 | .data = data, | |
568 | .match_type = match_type, | |
569 | .attr_subst_type = subst_type, | |
570 | .attr_match_remove_trailing_whitespace = remove_trailing_whitespace, | |
e7f5d708 | 571 | .rule_line = rule_line, |
25de7aa7 | 572 | }; |
fae0f8a0 | 573 | |
e7f5d708 | 574 | LIST_APPEND(tokens, rule_line->tokens, token); |
25de7aa7 YW |
575 | |
576 | if (token->type == TK_A_NAME) | |
577 | SET_FLAG(rule_line->type, LINE_HAS_NAME, true); | |
578 | ||
579 | else if (IN_SET(token->type, TK_A_DEVLINK, | |
580 | TK_A_OWNER, TK_A_GROUP, TK_A_MODE, | |
581 | TK_A_OWNER_ID, TK_A_GROUP_ID, TK_A_MODE_ID)) | |
582 | SET_FLAG(rule_line->type, LINE_HAS_DEVLINK, true); | |
583 | ||
5abba26e YW |
584 | else if (token->type == TK_A_OPTIONS_STATIC_NODE) |
585 | SET_FLAG(rule_line->type, LINE_HAS_STATIC_NODE, true); | |
586 | ||
25de7aa7 | 587 | else if (token->type >= _TK_A_MIN || |
9c69cd7e | 588 | IN_SET(token->type, TK_M_PROGRAM, |
25de7aa7 YW |
589 | TK_M_IMPORT_FILE, TK_M_IMPORT_PROGRAM, TK_M_IMPORT_BUILTIN, |
590 | TK_M_IMPORT_DB, TK_M_IMPORT_CMDLINE, TK_M_IMPORT_PARENT)) | |
591 | SET_FLAG(rule_line->type, LINE_UPDATE_SOMETHING, true); | |
fae0f8a0 | 592 | |
a0244c5d | 593 | TAKE_PTR(token); |
912541b0 | 594 | return 0; |
bd0ed2ff KS |
595 | } |
596 | ||
c06ab041 | 597 | static void check_value_format_and_warn(UdevRuleLine *line, const char *key, const char *value, bool nonempty) { |
f85cc54c ZJS |
598 | size_t offset; |
599 | const char *hint; | |
600 | ||
601 | if (nonempty && isempty(value)) | |
c06ab041 | 602 | log_line_invalid_value(line, key, value, (size_t) 0, "empty value"); |
f85cc54c | 603 | else if (udev_check_format(value, &offset, &hint) < 0) |
c06ab041 | 604 | log_line_invalid_value(line, key, value, offset + 1, hint); |
f85cc54c ZJS |
605 | } |
606 | ||
c06ab041 | 607 | static int check_attr_format_and_warn(UdevRuleLine *line, const char *key, const char *value) { |
7504610b ZJS |
608 | size_t offset; |
609 | const char *hint; | |
610 | ||
611 | if (isempty(value)) | |
c06ab041 | 612 | return log_line_invalid_attr(line, key); |
7504610b | 613 | if (udev_check_format(value, &offset, &hint) < 0) |
c06ab041 | 614 | log_line_invalid_attr_format(line, key, value, offset + 1, hint); |
7504610b ZJS |
615 | return 0; |
616 | } | |
617 | ||
c06ab041 YW |
618 | static int parse_token(UdevRuleLine *rule_line, const char *key, char *attr, UdevRuleOperatorType op, char *value) { |
619 | ResolveNameTiming resolve_name_timing = LINE_GET_RULES(rule_line)->resolve_name_timing; | |
25de7aa7 | 620 | bool is_match = IN_SET(op, OP_MATCH, OP_NOMATCH); |
a7521142 | 621 | int r; |
912541b0 | 622 | |
25de7aa7 YW |
623 | assert(key); |
624 | assert(value); | |
625 | ||
25de7aa7 YW |
626 | if (streq(key, "ACTION")) { |
627 | if (attr) | |
c06ab041 | 628 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 629 | if (!is_match) |
c06ab041 | 630 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
631 | |
632 | r = rule_line_add_token(rule_line, TK_M_ACTION, op, value, NULL); | |
633 | } else if (streq(key, "DEVPATH")) { | |
634 | if (attr) | |
c06ab041 | 635 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 636 | if (!is_match) |
c06ab041 | 637 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
638 | |
639 | r = rule_line_add_token(rule_line, TK_M_DEVPATH, op, value, NULL); | |
640 | } else if (streq(key, "KERNEL")) { | |
641 | if (attr) | |
c06ab041 | 642 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 643 | if (!is_match) |
c06ab041 | 644 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
645 | |
646 | r = rule_line_add_token(rule_line, TK_M_KERNEL, op, value, NULL); | |
647 | } else if (streq(key, "SYMLINK")) { | |
648 | if (attr) | |
c06ab041 | 649 | return log_line_invalid_attr(rule_line, key); |
d7aee41d | 650 | if (!is_match) { |
c06ab041 | 651 | check_value_format_and_warn(rule_line, key, value, false); |
d7aee41d YW |
652 | r = rule_line_add_token(rule_line, TK_A_DEVLINK, op, value, NULL); |
653 | } else | |
654 | r = rule_line_add_token(rule_line, TK_M_DEVLINK, op, value, NULL); | |
25de7aa7 YW |
655 | } else if (streq(key, "NAME")) { |
656 | if (attr) | |
c06ab041 | 657 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 658 | if (op == OP_REMOVE) |
c06ab041 | 659 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 660 | if (op == OP_ADD) { |
c06ab041 | 661 | log_line_warning(rule_line, "%s key takes '==', '!=', '=', or ':=' operator, assuming '='.", key); |
25de7aa7 YW |
662 | op = OP_ASSIGN; |
663 | } | |
664 | ||
665 | if (!is_match) { | |
666 | if (streq(value, "%k")) | |
c06ab041 YW |
667 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), |
668 | "Ignoring NAME=\"%%k\", as it will take no effect."); | |
25de7aa7 | 669 | if (isempty(value)) |
c06ab041 YW |
670 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), |
671 | "Ignoring NAME=\"\", as udev will not delete any network interfaces."); | |
672 | check_value_format_and_warn(rule_line, key, value, false); | |
d7aee41d | 673 | |
25de7aa7 YW |
674 | r = rule_line_add_token(rule_line, TK_A_NAME, op, value, NULL); |
675 | } else | |
676 | r = rule_line_add_token(rule_line, TK_M_NAME, op, value, NULL); | |
677 | } else if (streq(key, "ENV")) { | |
678 | if (isempty(attr)) | |
c06ab041 | 679 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 680 | if (op == OP_REMOVE) |
c06ab041 | 681 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 682 | if (op == OP_ASSIGN_FINAL) { |
c06ab041 | 683 | log_line_warning(rule_line, "%s key takes '==', '!=', '=', or '+=' operator, assuming '='.", key); |
25de7aa7 YW |
684 | op = OP_ASSIGN; |
685 | } | |
912541b0 | 686 | |
25de7aa7 YW |
687 | if (!is_match) { |
688 | if (STR_IN_SET(attr, | |
689 | "ACTION", "DEVLINKS", "DEVNAME", "DEVPATH", "DEVTYPE", "DRIVER", | |
690 | "IFINDEX", "MAJOR", "MINOR", "SEQNUM", "SUBSYSTEM", "TAGS")) | |
c06ab041 YW |
691 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), |
692 | "Invalid ENV attribute. '%s' cannot be set.", attr); | |
912541b0 | 693 | |
c06ab041 | 694 | check_value_format_and_warn(rule_line, key, value, false); |
f85cc54c | 695 | |
25de7aa7 YW |
696 | r = rule_line_add_token(rule_line, TK_A_ENV, op, value, attr); |
697 | } else | |
698 | r = rule_line_add_token(rule_line, TK_M_ENV, op, value, attr); | |
4801d8af JS |
699 | } else if (streq(key, "CONST")) { |
700 | if (isempty(attr) || !STR_IN_SET(attr, "arch", "virt")) | |
c06ab041 | 701 | return log_line_invalid_attr(rule_line, key); |
4801d8af | 702 | if (!is_match) |
c06ab041 | 703 | return log_line_invalid_op(rule_line, key); |
4801d8af | 704 | r = rule_line_add_token(rule_line, TK_M_CONST, op, value, attr); |
25de7aa7 YW |
705 | } else if (streq(key, "TAG")) { |
706 | if (attr) | |
c06ab041 | 707 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 708 | if (op == OP_ASSIGN_FINAL) { |
c06ab041 | 709 | log_line_warning(rule_line, "%s key takes '==', '!=', '=', or '+=' operator, assuming '='.", key); |
25de7aa7 | 710 | op = OP_ASSIGN; |
912541b0 | 711 | } |
319c6700 | 712 | |
d7aee41d | 713 | if (!is_match) { |
c06ab041 | 714 | check_value_format_and_warn(rule_line, key, value, true); |
f85cc54c | 715 | |
d7aee41d YW |
716 | r = rule_line_add_token(rule_line, TK_A_TAG, op, value, NULL); |
717 | } else | |
718 | r = rule_line_add_token(rule_line, TK_M_TAG, op, value, NULL); | |
25de7aa7 YW |
719 | } else if (streq(key, "SUBSYSTEM")) { |
720 | if (attr) | |
c06ab041 | 721 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 722 | if (!is_match) |
c06ab041 | 723 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
724 | |
725 | if (STR_IN_SET(value, "bus", "class")) | |
c06ab041 | 726 | log_line_warning(rule_line, "\"%s\" must be specified as \"subsystem\".", value); |
25de7aa7 YW |
727 | |
728 | r = rule_line_add_token(rule_line, TK_M_SUBSYSTEM, op, value, NULL); | |
729 | } else if (streq(key, "DRIVER")) { | |
730 | if (attr) | |
c06ab041 | 731 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 732 | if (!is_match) |
c06ab041 | 733 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
734 | |
735 | r = rule_line_add_token(rule_line, TK_M_DRIVER, op, value, NULL); | |
736 | } else if (streq(key, "ATTR")) { | |
c06ab041 | 737 | r = check_attr_format_and_warn(rule_line, key, attr); |
7504610b ZJS |
738 | if (r < 0) |
739 | return r; | |
25de7aa7 | 740 | if (op == OP_REMOVE) |
c06ab041 | 741 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 742 | if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) { |
c06ab041 | 743 | log_line_warning(rule_line, "%s key takes '==', '!=', or '=' operator, assuming '='.", key); |
25de7aa7 YW |
744 | op = OP_ASSIGN; |
745 | } | |
912541b0 | 746 | |
d7aee41d | 747 | if (!is_match) { |
c06ab041 | 748 | check_value_format_and_warn(rule_line, key, value, false); |
d7aee41d YW |
749 | r = rule_line_add_token(rule_line, TK_A_ATTR, op, value, attr); |
750 | } else | |
751 | r = rule_line_add_token(rule_line, TK_M_ATTR, op, value, attr); | |
25de7aa7 | 752 | } else if (streq(key, "SYSCTL")) { |
c06ab041 | 753 | r = check_attr_format_and_warn(rule_line, key, attr); |
7504610b ZJS |
754 | if (r < 0) |
755 | return r; | |
25de7aa7 | 756 | if (op == OP_REMOVE) |
c06ab041 | 757 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 758 | if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) { |
c06ab041 | 759 | log_line_warning(rule_line, "%s key takes '==', '!=', or '=' operator, assuming '='.", key); |
25de7aa7 YW |
760 | op = OP_ASSIGN; |
761 | } | |
3b64e4d4 | 762 | |
d7aee41d | 763 | if (!is_match) { |
c06ab041 | 764 | check_value_format_and_warn(rule_line, key, value, false); |
d7aee41d YW |
765 | r = rule_line_add_token(rule_line, TK_A_SYSCTL, op, value, attr); |
766 | } else | |
767 | r = rule_line_add_token(rule_line, TK_M_SYSCTL, op, value, attr); | |
25de7aa7 YW |
768 | } else if (streq(key, "KERNELS")) { |
769 | if (attr) | |
c06ab041 | 770 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 771 | if (!is_match) |
c06ab041 | 772 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
773 | |
774 | r = rule_line_add_token(rule_line, TK_M_PARENTS_KERNEL, op, value, NULL); | |
775 | } else if (streq(key, "SUBSYSTEMS")) { | |
776 | if (attr) | |
c06ab041 | 777 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 778 | if (!is_match) |
c06ab041 | 779 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
780 | |
781 | r = rule_line_add_token(rule_line, TK_M_PARENTS_SUBSYSTEM, op, value, NULL); | |
782 | } else if (streq(key, "DRIVERS")) { | |
783 | if (attr) | |
c06ab041 | 784 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 785 | if (!is_match) |
c06ab041 | 786 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
787 | |
788 | r = rule_line_add_token(rule_line, TK_M_PARENTS_DRIVER, op, value, NULL); | |
789 | } else if (streq(key, "ATTRS")) { | |
c06ab041 | 790 | r = check_attr_format_and_warn(rule_line, key, attr); |
7504610b ZJS |
791 | if (r < 0) |
792 | return r; | |
25de7aa7 | 793 | if (!is_match) |
c06ab041 | 794 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
795 | |
796 | if (startswith(attr, "device/")) | |
c06ab041 | 797 | log_line_warning(rule_line, "'device' link may not be available in future kernels."); |
25de7aa7 | 798 | if (strstr(attr, "../")) |
c06ab041 | 799 | log_line_warning(rule_line, "Direct reference to parent sysfs directory, may break in future kernels."); |
25de7aa7 YW |
800 | |
801 | r = rule_line_add_token(rule_line, TK_M_PARENTS_ATTR, op, value, attr); | |
802 | } else if (streq(key, "TAGS")) { | |
803 | if (attr) | |
c06ab041 | 804 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 805 | if (!is_match) |
c06ab041 | 806 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
807 | |
808 | r = rule_line_add_token(rule_line, TK_M_PARENTS_TAG, op, value, NULL); | |
809 | } else if (streq(key, "TEST")) { | |
810 | mode_t mode = MODE_INVALID; | |
811 | ||
812 | if (!isempty(attr)) { | |
813 | r = parse_mode(attr, &mode); | |
814 | if (r < 0) | |
c06ab041 | 815 | return log_line_error_errno(rule_line, r, "Failed to parse mode '%s': %m", attr); |
25de7aa7 | 816 | } |
c06ab041 | 817 | check_value_format_and_warn(rule_line, key, value, true); |
25de7aa7 | 818 | if (!is_match) |
c06ab041 | 819 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
820 | |
821 | r = rule_line_add_token(rule_line, TK_M_TEST, op, value, MODE_TO_PTR(mode)); | |
822 | } else if (streq(key, "PROGRAM")) { | |
823 | if (attr) | |
c06ab041 YW |
824 | return log_line_invalid_attr(rule_line, key); |
825 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 | 826 | if (op == OP_REMOVE) |
c06ab041 | 827 | return log_line_invalid_op(rule_line, key); |
b6a80b83 | 828 | if (!is_match) |
25de7aa7 | 829 | op = OP_MATCH; |
912541b0 | 830 | |
25de7aa7 YW |
831 | r = rule_line_add_token(rule_line, TK_M_PROGRAM, op, value, NULL); |
832 | } else if (streq(key, "IMPORT")) { | |
833 | if (isempty(attr)) | |
c06ab041 YW |
834 | return log_line_invalid_attr(rule_line, key); |
835 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 | 836 | if (op == OP_REMOVE) |
c06ab041 | 837 | return log_line_invalid_op(rule_line, key); |
b6a80b83 | 838 | if (!is_match) |
25de7aa7 | 839 | op = OP_MATCH; |
e2ecb34f | 840 | |
25de7aa7 YW |
841 | if (streq(attr, "file")) |
842 | r = rule_line_add_token(rule_line, TK_M_IMPORT_FILE, op, value, NULL); | |
843 | else if (streq(attr, "program")) { | |
844 | UdevBuiltinCommand cmd; | |
f4850a1d | 845 | |
25de7aa7 YW |
846 | cmd = udev_builtin_lookup(value); |
847 | if (cmd >= 0) { | |
4134614f | 848 | log_line_debug(rule_line, "Found builtin command '%s' for %s, replacing attribute.", value, key); |
25de7aa7 YW |
849 | r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd)); |
850 | } else | |
851 | r = rule_line_add_token(rule_line, TK_M_IMPORT_PROGRAM, op, value, NULL); | |
852 | } else if (streq(attr, "builtin")) { | |
853 | UdevBuiltinCommand cmd; | |
854 | ||
855 | cmd = udev_builtin_lookup(value); | |
856 | if (cmd < 0) | |
c06ab041 YW |
857 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), |
858 | "Unknown builtin command: %s", value); | |
25de7aa7 YW |
859 | r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd)); |
860 | } else if (streq(attr, "db")) | |
861 | r = rule_line_add_token(rule_line, TK_M_IMPORT_DB, op, value, NULL); | |
862 | else if (streq(attr, "cmdline")) | |
863 | r = rule_line_add_token(rule_line, TK_M_IMPORT_CMDLINE, op, value, NULL); | |
864 | else if (streq(attr, "parent")) | |
865 | r = rule_line_add_token(rule_line, TK_M_IMPORT_PARENT, op, value, NULL); | |
866 | else | |
c06ab041 | 867 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 YW |
868 | } else if (streq(key, "RESULT")) { |
869 | if (attr) | |
c06ab041 | 870 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 871 | if (!is_match) |
c06ab041 | 872 | return log_line_invalid_op(rule_line, key); |
25de7aa7 YW |
873 | |
874 | r = rule_line_add_token(rule_line, TK_M_RESULT, op, value, NULL); | |
875 | } else if (streq(key, "OPTIONS")) { | |
876 | char *tmp; | |
877 | ||
878 | if (attr) | |
c06ab041 | 879 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 880 | if (is_match || op == OP_REMOVE) |
c06ab041 | 881 | return log_line_invalid_op(rule_line, key); |
ba60127d | 882 | if (op == OP_ADD) |
25de7aa7 | 883 | op = OP_ASSIGN; |
f4850a1d | 884 | |
25de7aa7 YW |
885 | if (streq(value, "string_escape=none")) |
886 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_NONE, op, NULL, NULL); | |
887 | else if (streq(value, "string_escape=replace")) | |
888 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_REPLACE, op, NULL, NULL); | |
889 | else if (streq(value, "db_persist")) | |
890 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_DB_PERSIST, op, NULL, NULL); | |
891 | else if (streq(value, "watch")) | |
892 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(1)); | |
893 | else if (streq(value, "nowatch")) | |
894 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(0)); | |
895 | else if ((tmp = startswith(value, "static_node="))) | |
896 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_STATIC_NODE, op, tmp, NULL); | |
897 | else if ((tmp = startswith(value, "link_priority="))) { | |
898 | int prio; | |
899 | ||
900 | r = safe_atoi(tmp, &prio); | |
901 | if (r < 0) | |
c06ab041 | 902 | return log_line_error_errno(rule_line, r, "Failed to parse link priority '%s': %m", tmp); |
25de7aa7 | 903 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_DEVLINK_PRIORITY, op, NULL, INT_TO_PTR(prio)); |
1a0bd015 YW |
904 | } else if ((tmp = startswith(value, "log_level="))) { |
905 | int level; | |
906 | ||
907 | if (streq(tmp, "reset")) | |
908 | level = -1; | |
909 | else { | |
910 | level = log_level_from_string(tmp); | |
911 | if (level < 0) | |
c06ab041 | 912 | return log_line_error_errno(rule_line, level, "Failed to parse log level '%s': %m", tmp); |
1a0bd015 YW |
913 | } |
914 | r = rule_line_add_token(rule_line, TK_A_OPTIONS_LOG_LEVEL, op, NULL, INT_TO_PTR(level)); | |
25de7aa7 | 915 | } else { |
c06ab041 | 916 | log_line_warning(rule_line, "Invalid value for OPTIONS key, ignoring: '%s'", value); |
25de7aa7 YW |
917 | return 0; |
918 | } | |
919 | } else if (streq(key, "OWNER")) { | |
920 | uid_t uid; | |
f4850a1d | 921 | |
25de7aa7 | 922 | if (attr) |
c06ab041 | 923 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 924 | if (is_match || op == OP_REMOVE) |
c06ab041 | 925 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 926 | if (op == OP_ADD) { |
c06ab041 | 927 | log_line_warning(rule_line, "%s key takes '=' or ':=' operator, assuming '='.", key); |
25de7aa7 YW |
928 | op = OP_ASSIGN; |
929 | } | |
f4850a1d | 930 | |
25de7aa7 YW |
931 | if (parse_uid(value, &uid) >= 0) |
932 | r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid)); | |
c06ab041 | 933 | else if (resolve_name_timing == RESOLVE_NAME_EARLY && |
25de7aa7 | 934 | rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) { |
c06ab041 | 935 | r = rule_resolve_user(rule_line, value, &uid); |
25de7aa7 | 936 | if (r < 0) |
c06ab041 | 937 | return log_line_error_errno(rule_line, r, "Failed to resolve user name '%s': %m", value); |
25de7aa7 YW |
938 | |
939 | r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid)); | |
c06ab041 YW |
940 | } else if (resolve_name_timing != RESOLVE_NAME_NEVER) { |
941 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 | 942 | r = rule_line_add_token(rule_line, TK_A_OWNER, op, value, NULL); |
d7aee41d | 943 | } else { |
4134614f | 944 | log_line_debug(rule_line, "User name resolution is disabled, ignoring %s=\"%s\".", key, value); |
25de7aa7 YW |
945 | return 0; |
946 | } | |
947 | } else if (streq(key, "GROUP")) { | |
948 | gid_t gid; | |
949 | ||
950 | if (attr) | |
c06ab041 | 951 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 952 | if (is_match || op == OP_REMOVE) |
c06ab041 | 953 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 954 | if (op == OP_ADD) { |
c06ab041 | 955 | log_line_warning(rule_line, "%s key takes '=' or ':=' operator, assuming '='.", key); |
25de7aa7 YW |
956 | op = OP_ASSIGN; |
957 | } | |
958 | ||
959 | if (parse_gid(value, &gid) >= 0) | |
960 | r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid)); | |
c06ab041 | 961 | else if (resolve_name_timing == RESOLVE_NAME_EARLY && |
25de7aa7 | 962 | rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) { |
c06ab041 | 963 | r = rule_resolve_group(rule_line, value, &gid); |
25de7aa7 | 964 | if (r < 0) |
c06ab041 | 965 | return log_line_error_errno(rule_line, r, "Failed to resolve group name '%s': %m", value); |
25de7aa7 YW |
966 | |
967 | r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid)); | |
c06ab041 YW |
968 | } else if (resolve_name_timing != RESOLVE_NAME_NEVER) { |
969 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 | 970 | r = rule_line_add_token(rule_line, TK_A_GROUP, op, value, NULL); |
d7aee41d | 971 | } else { |
4134614f | 972 | log_line_debug(rule_line, "Resolving group name is disabled, ignoring GROUP=\"%s\".", value); |
25de7aa7 YW |
973 | return 0; |
974 | } | |
975 | } else if (streq(key, "MODE")) { | |
976 | mode_t mode; | |
977 | ||
978 | if (attr) | |
c06ab041 | 979 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 980 | if (is_match || op == OP_REMOVE) |
c06ab041 | 981 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 982 | if (op == OP_ADD) { |
c06ab041 | 983 | log_line_warning(rule_line, "%s key takes '=' or ':=' operator, assuming '='.", key); |
25de7aa7 YW |
984 | op = OP_ASSIGN; |
985 | } | |
986 | ||
987 | if (parse_mode(value, &mode) >= 0) | |
988 | r = rule_line_add_token(rule_line, TK_A_MODE_ID, op, NULL, MODE_TO_PTR(mode)); | |
d7aee41d | 989 | else { |
c06ab041 | 990 | check_value_format_and_warn(rule_line, key, value, true); |
25de7aa7 | 991 | r = rule_line_add_token(rule_line, TK_A_MODE, op, value, NULL); |
d7aee41d | 992 | } |
25de7aa7 YW |
993 | } else if (streq(key, "SECLABEL")) { |
994 | if (isempty(attr)) | |
c06ab041 YW |
995 | return log_line_invalid_attr(rule_line, key); |
996 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 | 997 | if (is_match || op == OP_REMOVE) |
c06ab041 | 998 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 999 | if (op == OP_ASSIGN_FINAL) { |
c06ab041 | 1000 | log_line_warning(rule_line, "%s key takes '=' or '+=' operator, assuming '='.", key); |
25de7aa7 YW |
1001 | op = OP_ASSIGN; |
1002 | } | |
1003 | ||
0335d110 | 1004 | r = rule_line_add_token(rule_line, TK_A_SECLABEL, op, value, attr); |
25de7aa7 YW |
1005 | } else if (streq(key, "RUN")) { |
1006 | if (is_match || op == OP_REMOVE) | |
c06ab041 YW |
1007 | return log_line_invalid_op(rule_line, key); |
1008 | check_value_format_and_warn(rule_line, key, value, true); | |
25de7aa7 YW |
1009 | if (!attr || streq(attr, "program")) |
1010 | r = rule_line_add_token(rule_line, TK_A_RUN_PROGRAM, op, value, NULL); | |
1011 | else if (streq(attr, "builtin")) { | |
1012 | UdevBuiltinCommand cmd; | |
1013 | ||
1014 | cmd = udev_builtin_lookup(value); | |
1015 | if (cmd < 0) | |
c06ab041 | 1016 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), |
4134614f | 1017 | "Unknown builtin command '%s', ignoring.", value); |
25de7aa7 YW |
1018 | r = rule_line_add_token(rule_line, TK_A_RUN_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd)); |
1019 | } else | |
c06ab041 | 1020 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 YW |
1021 | } else if (streq(key, "GOTO")) { |
1022 | if (attr) | |
c06ab041 | 1023 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 1024 | if (op != OP_ASSIGN) |
c06ab041 | 1025 | return log_line_invalid_op(rule_line, key); |
25de7aa7 | 1026 | if (FLAGS_SET(rule_line->type, LINE_HAS_GOTO)) { |
c06ab041 | 1027 | log_line_warning(rule_line, "Contains multiple GOTO keys, ignoring GOTO=\"%s\".", value); |
25de7aa7 | 1028 | return 0; |
912541b0 | 1029 | } |
25de7aa7 YW |
1030 | |
1031 | rule_line->goto_label = value; | |
1032 | SET_FLAG(rule_line->type, LINE_HAS_GOTO, true); | |
1033 | return 1; | |
1034 | } else if (streq(key, "LABEL")) { | |
1035 | if (attr) | |
c06ab041 | 1036 | return log_line_invalid_attr(rule_line, key); |
25de7aa7 | 1037 | if (op != OP_ASSIGN) |
c06ab041 | 1038 | return log_line_invalid_op(rule_line, key); |
b2f7bb76 | 1039 | if (FLAGS_SET(rule_line->type, LINE_HAS_LABEL)) |
c06ab041 YW |
1040 | log_line_warning(rule_line, "Contains multiple LABEL keys, ignoring LABEL=\"%s\".", |
1041 | rule_line->label); | |
25de7aa7 YW |
1042 | |
1043 | rule_line->label = value; | |
1044 | SET_FLAG(rule_line->type, LINE_HAS_LABEL, true); | |
1045 | return 1; | |
1046 | } else | |
4134614f | 1047 | return log_line_error_errno(rule_line, SYNTHETIC_ERRNO(EINVAL), "Invalid key '%s'.", key); |
25de7aa7 YW |
1048 | if (r < 0) |
1049 | return log_oom(); | |
1050 | ||
1051 | return 1; | |
0ea5e96e KS |
1052 | } |
1053 | ||
25de7aa7 YW |
1054 | static UdevRuleOperatorType parse_operator(const char *op) { |
1055 | assert(op); | |
1056 | ||
1057 | if (startswith(op, "==")) | |
1058 | return OP_MATCH; | |
1059 | if (startswith(op, "!=")) | |
1060 | return OP_NOMATCH; | |
1061 | if (startswith(op, "+=")) | |
1062 | return OP_ADD; | |
1063 | if (startswith(op, "-=")) | |
1064 | return OP_REMOVE; | |
1065 | if (startswith(op, "=")) | |
1066 | return OP_ASSIGN; | |
1067 | if (startswith(op, ":=")) | |
1068 | return OP_ASSIGN_FINAL; | |
1069 | ||
1070 | return _OP_TYPE_INVALID; | |
1071 | } | |
912541b0 | 1072 | |
acc1954a DL |
1073 | static void check_token_delimiters(UdevRuleLine *rule_line, const char *line) { |
1074 | assert(rule_line); | |
1075 | ||
1076 | size_t n_comma = 0; | |
1077 | bool ws_before_comma = false, ws_after_comma = false; | |
1078 | const char *p; | |
1079 | ||
1080 | for (p = line; !isempty(p); ++p) { | |
1081 | if (*p == ',') | |
1082 | ++n_comma; | |
1083 | else if (strchr(WHITESPACE, *p)) { | |
1084 | if (n_comma > 0) | |
1085 | ws_after_comma = true; | |
1086 | else | |
1087 | ws_before_comma = true; | |
1088 | } else | |
1089 | break; | |
1090 | } | |
1091 | ||
1092 | if (line == rule_line->line) { | |
1093 | /* this is the first token of the rule */ | |
1094 | if (n_comma > 0) | |
1bf3dd41 | 1095 | log_line_notice(rule_line, "style: stray leading comma."); |
acc1954a DL |
1096 | } else if (isempty(p)) { |
1097 | /* there are no more tokens in the rule */ | |
1098 | if (n_comma > 0) | |
1bf3dd41 | 1099 | log_line_notice(rule_line, "style: stray trailing comma."); |
acc1954a DL |
1100 | } else { |
1101 | /* single comma is expected */ | |
1102 | if (n_comma == 0) | |
1bf3dd41 | 1103 | log_line_notice(rule_line, "style: a comma between tokens is expected."); |
acc1954a | 1104 | else if (n_comma > 1) |
1bf3dd41 | 1105 | log_line_notice(rule_line, "style: more than one comma between tokens."); |
acc1954a DL |
1106 | |
1107 | /* whitespace after comma is expected */ | |
1108 | if (n_comma > 0) { | |
1109 | if (ws_before_comma) | |
1bf3dd41 | 1110 | log_line_notice(rule_line, "style: stray whitespace before comma."); |
acc1954a | 1111 | if (!ws_after_comma) |
1bf3dd41 | 1112 | log_line_notice(rule_line, "style: whitespace after comma is expected."); |
acc1954a | 1113 | } else if (!ws_before_comma && !ws_after_comma) |
1bf3dd41 | 1114 | log_line_notice(rule_line, "style: whitespace between tokens is expected."); |
acc1954a DL |
1115 | } |
1116 | } | |
1117 | ||
25de7aa7 | 1118 | static int parse_line(char **line, char **ret_key, char **ret_attr, UdevRuleOperatorType *ret_op, char **ret_value) { |
aea3253e | 1119 | char *key_begin, *key_end, *attr, *tmp; |
25de7aa7 | 1120 | UdevRuleOperatorType op; |
aea3253e | 1121 | int r; |
912541b0 | 1122 | |
25de7aa7 YW |
1123 | assert(line); |
1124 | assert(*line); | |
1125 | assert(ret_key); | |
1126 | assert(ret_op); | |
1127 | assert(ret_value); | |
912541b0 | 1128 | |
25de7aa7 | 1129 | key_begin = skip_leading_chars(*line, WHITESPACE ","); |
912541b0 | 1130 | |
25de7aa7 YW |
1131 | if (isempty(key_begin)) |
1132 | return 0; | |
1133 | ||
1134 | for (key_end = key_begin; ; key_end++) { | |
1135 | if (key_end[0] == '\0') | |
704dbfb2 | 1136 | return -EINVAL; |
25de7aa7 | 1137 | if (strchr(WHITESPACE "={", key_end[0])) |
912541b0 | 1138 | break; |
25de7aa7 | 1139 | if (strchr("+-!:", key_end[0]) && key_end[1] == '=') |
912541b0 | 1140 | break; |
25de7aa7 YW |
1141 | } |
1142 | if (key_end[0] == '{') { | |
1143 | attr = key_end + 1; | |
1144 | tmp = strchr(attr, '}'); | |
1145 | if (!tmp) | |
1146 | return -EINVAL; | |
1147 | *tmp++ = '\0'; | |
1148 | } else { | |
1149 | attr = NULL; | |
1150 | tmp = key_end; | |
912541b0 KS |
1151 | } |
1152 | ||
25de7aa7 YW |
1153 | tmp = skip_leading_chars(tmp, NULL); |
1154 | op = parse_operator(tmp); | |
1155 | if (op < 0) | |
704dbfb2 | 1156 | return -EINVAL; |
912541b0 | 1157 | |
25de7aa7 | 1158 | key_end[0] = '\0'; |
912541b0 | 1159 | |
25de7aa7 | 1160 | tmp += op == OP_ASSIGN ? 1 : 2; |
aea3253e YLY |
1161 | tmp = skip_leading_chars(tmp, NULL); |
1162 | r = udev_rule_parse_value(tmp, ret_value, line); | |
1163 | if (r < 0) | |
1164 | return r; | |
25de7aa7 | 1165 | |
25de7aa7 YW |
1166 | *ret_key = key_begin; |
1167 | *ret_attr = attr; | |
1168 | *ret_op = op; | |
25de7aa7 YW |
1169 | return 1; |
1170 | } | |
7e760b79 | 1171 | |
56df2f6f DL |
1172 | static void check_tokens_order(UdevRuleLine *rule_line) { |
1173 | bool has_result = false; | |
1174 | ||
1175 | assert(rule_line); | |
1176 | ||
1177 | LIST_FOREACH(tokens, t, rule_line->tokens) | |
1178 | if (t->type == TK_M_RESULT) | |
1179 | has_result = true; | |
1180 | else if (has_result && t->type == TK_M_PROGRAM) { | |
1181 | log_line_warning(rule_line, "Reordering RESULT check after PROGRAM assignment."); | |
1182 | break; | |
1183 | } | |
1184 | } | |
1185 | ||
25de7aa7 | 1186 | static void sort_tokens(UdevRuleLine *rule_line) { |
25de7aa7 | 1187 | assert(rule_line); |
912541b0 | 1188 | |
d5fe7f7f | 1189 | UdevRuleToken *old_tokens = TAKE_PTR(rule_line->tokens); |
95776dc6 | 1190 | |
d5fe7f7f | 1191 | while (old_tokens) { |
03677889 | 1192 | UdevRuleToken *min_token = NULL; |
25de7aa7 | 1193 | |
d5fe7f7f | 1194 | LIST_FOREACH(tokens, t, old_tokens) |
25de7aa7 YW |
1195 | if (!min_token || min_token->type > t->type) |
1196 | min_token = t; | |
1197 | ||
d5fe7f7f | 1198 | LIST_REMOVE(tokens, old_tokens, min_token); |
e7f5d708 | 1199 | LIST_APPEND(tokens, rule_line->tokens, min_token); |
912541b0 | 1200 | } |
6880b25d | 1201 | } |
95776dc6 | 1202 | |
acc1954a | 1203 | static int rule_add_line(UdevRuleFile *rule_file, const char *line_str, unsigned line_nr, bool extra_checks) { |
25de7aa7 YW |
1204 | _cleanup_(udev_rule_line_freep) UdevRuleLine *rule_line = NULL; |
1205 | _cleanup_free_ char *line = NULL; | |
25de7aa7 YW |
1206 | char *p; |
1207 | int r; | |
912541b0 | 1208 | |
c06ab041 | 1209 | assert(rule_file); |
25de7aa7 | 1210 | assert(line_str); |
6e2efb6c | 1211 | |
25de7aa7 YW |
1212 | if (isempty(line_str)) |
1213 | return 0; | |
912541b0 | 1214 | |
8c499a61 | 1215 | line = strdup(line_str); |
25de7aa7 YW |
1216 | if (!line) |
1217 | return log_oom(); | |
67e4b385 | 1218 | |
25de7aa7 YW |
1219 | rule_line = new(UdevRuleLine, 1); |
1220 | if (!rule_line) | |
1221 | return log_oom(); | |
912541b0 | 1222 | |
25de7aa7 YW |
1223 | *rule_line = (UdevRuleLine) { |
1224 | .line = TAKE_PTR(line), | |
1225 | .line_number = line_nr, | |
1226 | .rule_file = rule_file, | |
1227 | }; | |
912541b0 | 1228 | |
c06ab041 | 1229 | LIST_APPEND(rule_lines, rule_file->rule_lines, rule_line); |
912541b0 | 1230 | |
25de7aa7 YW |
1231 | for (p = rule_line->line; !isempty(p); ) { |
1232 | char *key, *attr, *value; | |
1233 | UdevRuleOperatorType op; | |
912541b0 | 1234 | |
acc1954a DL |
1235 | if (extra_checks) |
1236 | check_token_delimiters(rule_line, p); | |
1237 | ||
25de7aa7 YW |
1238 | r = parse_line(&p, &key, &attr, &op, &value); |
1239 | if (r < 0) | |
c06ab041 | 1240 | return log_line_error_errno(rule_line, r, "Invalid key/value pair, ignoring."); |
25de7aa7 YW |
1241 | if (r == 0) |
1242 | break; | |
912541b0 | 1243 | |
c06ab041 | 1244 | r = parse_token(rule_line, key, attr, op, value); |
ef660d07 YW |
1245 | if (r < 0) |
1246 | return r; | |
25de7aa7 | 1247 | } |
912541b0 | 1248 | |
25de7aa7 | 1249 | if (rule_line->type == 0) { |
ebb00082 | 1250 | log_line_warning(rule_line, "The line has no effect, ignoring."); |
25de7aa7 | 1251 | return 0; |
912541b0 | 1252 | } |
25de7aa7 | 1253 | |
56df2f6f DL |
1254 | if (extra_checks) |
1255 | check_tokens_order(rule_line); | |
1256 | ||
25de7aa7 YW |
1257 | sort_tokens(rule_line); |
1258 | TAKE_PTR(rule_line); | |
912541b0 | 1259 | return 0; |
724257d9 GKH |
1260 | } |
1261 | ||
25de7aa7 | 1262 | static void rule_resolve_goto(UdevRuleFile *rule_file) { |
25de7aa7 | 1263 | assert(rule_file); |
912541b0 | 1264 | |
25de7aa7 | 1265 | /* link GOTOs to LABEL rules in this file to be able to fast-forward */ |
80a226b2 | 1266 | LIST_FOREACH(rule_lines, line, rule_file->rule_lines) { |
25de7aa7 YW |
1267 | if (!FLAGS_SET(line->type, LINE_HAS_GOTO)) |
1268 | continue; | |
912541b0 | 1269 | |
bd335c96 | 1270 | LIST_FOREACH(rule_lines, i, line->rule_lines_next) |
25de7aa7 YW |
1271 | if (streq_ptr(i->label, line->goto_label)) { |
1272 | line->goto_line = i; | |
7a771d1d | 1273 | SET_FLAG(i->type, LINE_IS_REFERENCED, true); |
25de7aa7 | 1274 | break; |
912541b0 KS |
1275 | } |
1276 | ||
25de7aa7 | 1277 | if (!line->goto_line) { |
4134614f | 1278 | log_line_error(line, "GOTO=\"%s\" has no matching label, ignoring.", |
4f5de157 | 1279 | line->goto_label); |
912541b0 | 1280 | |
25de7aa7 YW |
1281 | SET_FLAG(line->type, LINE_HAS_GOTO, false); |
1282 | line->goto_label = NULL; | |
912541b0 | 1283 | |
7a771d1d | 1284 | if ((line->type & ~(LINE_HAS_LABEL|LINE_IS_REFERENCED)) == 0) { |
1bf3dd41 | 1285 | log_line_warning(line, "The line has no effect any more, dropping."); |
7a771d1d DL |
1286 | /* LINE_IS_REFERENCED implies LINE_HAS_LABEL */ |
1287 | if (line->type & LINE_HAS_LABEL) | |
25de7aa7 YW |
1288 | udev_rule_line_clear_tokens(line); |
1289 | else | |
1290 | udev_rule_line_free(line); | |
912541b0 | 1291 | } |
25de7aa7 | 1292 | } |
912541b0 | 1293 | } |
c7521974 KS |
1294 | } |
1295 | ||
3ec58d0c DL |
1296 | static bool token_data_is_string(UdevRuleTokenType type) { |
1297 | return IN_SET(type, TK_M_ENV, | |
1298 | TK_M_CONST, | |
1299 | TK_M_ATTR, | |
1300 | TK_M_SYSCTL, | |
1301 | TK_M_PARENTS_ATTR, | |
1302 | TK_A_SECLABEL, | |
1303 | TK_A_ENV, | |
1304 | TK_A_ATTR, | |
1305 | TK_A_SYSCTL); | |
1306 | } | |
1307 | ||
1308 | static bool token_type_and_data_eq(const UdevRuleToken *a, const UdevRuleToken *b) { | |
1309 | assert(a); | |
1310 | assert(b); | |
1311 | ||
1312 | return a->type == b->type && | |
1313 | (token_data_is_string(a->type) ? streq_ptr(a->data, b->data) : (a->data == b->data)); | |
1314 | } | |
1315 | ||
5004aa84 DL |
1316 | static bool nulstr_eq(const char *a, const char *b) { |
1317 | NULSTR_FOREACH(i, a) | |
1318 | if (!nulstr_contains(b, i)) | |
1319 | return false; | |
1320 | ||
1321 | NULSTR_FOREACH(i, b) | |
1322 | if (!nulstr_contains(a, i)) | |
1323 | return false; | |
1324 | ||
1325 | return true; | |
1326 | } | |
1327 | ||
1328 | static bool token_type_and_value_eq(const UdevRuleToken *a, const UdevRuleToken *b) { | |
3ec58d0c DL |
1329 | assert(a); |
1330 | assert(b); | |
1331 | ||
5004aa84 DL |
1332 | if (a->type != b->type || |
1333 | a->match_type != b->match_type) | |
3ec58d0c DL |
1334 | return false; |
1335 | ||
1336 | /* token value is ignored for certain match types */ | |
1337 | if (IN_SET(a->match_type, MATCH_TYPE_EMPTY, MATCH_TYPE_SUBSYSTEM)) | |
1338 | return true; | |
1339 | ||
5004aa84 DL |
1340 | return type_has_nulstr_value(a->type) ? nulstr_eq(a->value, b->value) : |
1341 | streq_ptr(a->value, b->value); | |
3ec58d0c DL |
1342 | } |
1343 | ||
1344 | static bool conflicting_op(UdevRuleOperatorType a, UdevRuleOperatorType b) { | |
1345 | return (a == OP_MATCH && b == OP_NOMATCH) || | |
1346 | (a == OP_NOMATCH && b == OP_MATCH); | |
1347 | } | |
1348 | ||
1349 | /* test whether all fields besides UdevRuleOperatorType of two tokens match */ | |
1350 | static bool tokens_eq(const UdevRuleToken *a, const UdevRuleToken *b) { | |
1351 | assert(a); | |
1352 | assert(b); | |
1353 | ||
1354 | return a->attr_subst_type == b->attr_subst_type && | |
1355 | a->attr_match_remove_trailing_whitespace == b->attr_match_remove_trailing_whitespace && | |
5004aa84 | 1356 | token_type_and_value_eq(a, b) && |
3ec58d0c DL |
1357 | token_type_and_data_eq(a, b); |
1358 | } | |
1359 | ||
f0a16c9a DL |
1360 | static bool nulstr_tokens_conflict(const UdevRuleToken *a, const UdevRuleToken *b) { |
1361 | assert(a); | |
1362 | assert(b); | |
1363 | ||
1364 | if (!(a->type == b->type && | |
1365 | type_has_nulstr_value(a->type) && | |
1366 | a->op == b->op && | |
1367 | a->op == OP_MATCH && | |
1368 | a->match_type == b->match_type && | |
f0a16c9a DL |
1369 | a->attr_subst_type == b->attr_subst_type && |
1370 | a->attr_match_remove_trailing_whitespace == b->attr_match_remove_trailing_whitespace && | |
1371 | token_type_and_data_eq(a, b))) | |
1372 | return false; | |
1373 | ||
860e2a11 DL |
1374 | if (a->match_type == MATCH_TYPE_PLAIN) { |
1375 | NULSTR_FOREACH(i, a->value) | |
1376 | if (nulstr_contains(b->value, i)) | |
1377 | return false; | |
1378 | return true; | |
1379 | } | |
f0a16c9a | 1380 | |
860e2a11 DL |
1381 | if (a->match_type == MATCH_TYPE_GLOB) { |
1382 | NULSTR_FOREACH(i, a->value) { | |
1383 | size_t i_n = strcspn(i, GLOB_CHARS); | |
1384 | if (i_n == 0) | |
1385 | return false; | |
1386 | NULSTR_FOREACH(j, b->value) { | |
1387 | size_t j_n = strcspn(j, GLOB_CHARS); | |
1388 | if (j_n == 0 || strneq(i, j, MIN(i_n, j_n))) | |
1389 | return false; | |
1390 | } | |
1391 | ||
1392 | } | |
1393 | return true; | |
1394 | } | |
1395 | ||
1396 | return false; | |
f0a16c9a DL |
1397 | } |
1398 | ||
3ec58d0c | 1399 | static void udev_check_unused_labels(UdevRuleLine *line) { |
c06ab041 YW |
1400 | assert(line); |
1401 | ||
7a771d1d DL |
1402 | if (FLAGS_SET(line->type, LINE_HAS_LABEL) && |
1403 | !FLAGS_SET(line->type, LINE_IS_REFERENCED)) | |
1bf3dd41 | 1404 | log_line_notice(line, "style: LABEL=\"%s\" is unused.", line->label); |
7a771d1d DL |
1405 | } |
1406 | ||
3ec58d0c DL |
1407 | static void udev_check_conflicts_duplicates(UdevRuleLine *line) { |
1408 | assert(line); | |
1409 | ||
1410 | bool conflicts = false, duplicates = false; | |
1411 | ||
1412 | LIST_FOREACH(tokens, token, line->tokens) | |
1413 | LIST_FOREACH(tokens, i, token->tokens_next) { | |
f0a16c9a DL |
1414 | bool new_conflicts = false, new_duplicates = false; |
1415 | ||
1416 | if (tokens_eq(token, i)) { | |
1417 | if (!duplicates && token->op == i->op) | |
1418 | new_duplicates = true; | |
1419 | if (!conflicts && conflicting_op(token->op, i->op)) | |
1420 | new_conflicts = true; | |
1421 | } else if (!conflicts && nulstr_tokens_conflict(token, i)) | |
1422 | new_conflicts = true; | |
1423 | else | |
3ec58d0c | 1424 | continue; |
f0a16c9a DL |
1425 | |
1426 | if (new_duplicates) { | |
1427 | duplicates = new_duplicates; | |
4134614f | 1428 | log_line_warning(line, "duplicate expressions."); |
3ec58d0c | 1429 | } |
f0a16c9a DL |
1430 | if (new_conflicts) { |
1431 | conflicts = new_conflicts; | |
4134614f | 1432 | log_line_error(line, "conflicting match expressions, the line has no effect."); |
3ec58d0c DL |
1433 | } |
1434 | if (conflicts && duplicates) | |
1435 | return; | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | static void udev_check_rule_line(UdevRuleLine *line) { | |
1440 | udev_check_unused_labels(line); | |
1441 | udev_check_conflicts_duplicates(line); | |
1442 | } | |
1443 | ||
9b419eb0 | 1444 | int udev_rules_parse_file(UdevRules *rules, const char *filename, bool extra_checks, UdevRuleFile **ret) { |
3b948231 DL |
1445 | _cleanup_(udev_rule_file_freep) UdevRuleFile *rule_file = NULL; |
1446 | _cleanup_free_ char *continuation = NULL, *name = NULL; | |
1447 | _cleanup_fclose_ FILE *f = NULL; | |
1448 | bool ignore_line = false; | |
1449 | unsigned line_nr = 0; | |
1450 | struct stat st; | |
1451 | int r; | |
1452 | ||
1453 | assert(rules); | |
1454 | assert(filename); | |
1455 | ||
1456 | f = fopen(filename, "re"); | |
9db7081d | 1457 | if (!f) { |
f3664340 DL |
1458 | if (extra_checks) |
1459 | return -errno; | |
1460 | ||
1461 | if (errno == ENOENT) | |
9db7081d ZJS |
1462 | return 0; |
1463 | ||
3b948231 | 1464 | return log_warning_errno(errno, "Failed to open %s, ignoring: %m", filename); |
9db7081d | 1465 | } |
3b948231 DL |
1466 | |
1467 | if (fstat(fileno(f), &st) < 0) | |
1468 | return log_warning_errno(errno, "Failed to stat %s, ignoring: %m", filename); | |
1469 | ||
1470 | if (null_or_empty(&st)) { | |
1471 | log_debug("Skipping empty file: %s", filename); | |
1472 | if (ret) | |
1473 | *ret = NULL; | |
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | r = hashmap_put_stats_by_path(&rules->stats_by_path, filename, &st); | |
1478 | if (r < 0) | |
1479 | return log_warning_errno(errno, "Failed to save stat for %s, ignoring: %m", filename); | |
1480 | ||
1481 | (void) fd_warn_permissions(filename, fileno(f)); | |
1482 | ||
1483 | log_debug("Reading rules file: %s", filename); | |
1484 | ||
1485 | name = strdup(filename); | |
1486 | if (!name) | |
1487 | return log_oom(); | |
1488 | ||
1489 | rule_file = new(UdevRuleFile, 1); | |
1490 | if (!rule_file) | |
1491 | return log_oom(); | |
1492 | ||
1493 | *rule_file = (UdevRuleFile) { | |
1494 | .filename = TAKE_PTR(name), | |
1495 | .rules = rules, | |
1496 | }; | |
1497 | ||
1498 | LIST_APPEND(rule_files, rules->rule_files, rule_file); | |
1499 | ||
1500 | for (;;) { | |
1501 | _cleanup_free_ char *buf = NULL; | |
1502 | size_t len; | |
1503 | char *line; | |
1504 | ||
1505 | r = read_line(f, UDEV_LINE_SIZE, &buf); | |
1506 | if (r < 0) | |
1507 | return r; | |
1508 | if (r == 0) | |
1509 | break; | |
1510 | ||
1511 | line_nr++; | |
1512 | line = skip_leading_chars(buf, NULL); | |
1513 | ||
1514 | /* Lines beginning with '#' are ignored regardless of line continuation. */ | |
1515 | if (line[0] == '#') | |
1516 | continue; | |
1517 | ||
1518 | len = strlen(line); | |
1519 | ||
1520 | if (continuation && !ignore_line) { | |
1521 | if (strlen(continuation) + len >= UDEV_LINE_SIZE) | |
1522 | ignore_line = true; | |
1523 | ||
1524 | if (!strextend(&continuation, line)) | |
1525 | return log_oom(); | |
1526 | ||
1527 | if (!ignore_line) { | |
1528 | line = continuation; | |
1529 | len = strlen(line); | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | if (len > 0 && line[len - 1] == '\\') { | |
1534 | if (ignore_line) | |
1535 | continue; | |
1536 | ||
1537 | line[len - 1] = '\0'; | |
1538 | if (!continuation) { | |
1539 | continuation = strdup(line); | |
1540 | if (!continuation) | |
1541 | return log_oom(); | |
1542 | } | |
1543 | ||
1544 | continue; | |
1545 | } | |
1546 | ||
1547 | if (ignore_line) | |
4134614f | 1548 | log_file_error(rule_file, line_nr, "Line is too long, ignored."); |
3b948231 | 1549 | else if (len > 0) |
acc1954a | 1550 | (void) rule_add_line(rule_file, line, line_nr, extra_checks); |
3b948231 DL |
1551 | |
1552 | continuation = mfree(continuation); | |
1553 | ignore_line = false; | |
1554 | } | |
1555 | ||
1556 | if (continuation) | |
1557 | log_file_error(rule_file, line_nr, | |
4134614f | 1558 | "Unexpected EOF after line continuation, line ignored."); |
3b948231 DL |
1559 | |
1560 | rule_resolve_goto(rule_file); | |
1561 | ||
9b419eb0 DL |
1562 | if (extra_checks) |
1563 | LIST_FOREACH(rule_lines, line, rule_file->rule_lines) | |
1564 | udev_check_rule_line(line); | |
1565 | ||
3b948231 DL |
1566 | if (ret) |
1567 | *ret = rule_file; | |
1568 | ||
1569 | TAKE_PTR(rule_file); | |
1570 | return 1; | |
1571 | } | |
1572 | ||
c06ab041 YW |
1573 | unsigned udev_rule_file_get_issues(UdevRuleFile *rule_file) { |
1574 | assert(rule_file); | |
acdba85e DL |
1575 | |
1576 | return rule_file->issues; | |
1577 | } | |
1578 | ||
c238a1f5 | 1579 | UdevRules* udev_rules_new(ResolveNameTiming resolve_name_timing) { |
c4d44cba YW |
1580 | assert(resolve_name_timing >= 0 && resolve_name_timing < _RESOLVE_NAME_TIMING_MAX); |
1581 | ||
c238a1f5 | 1582 | UdevRules *rules = new(UdevRules, 1); |
1017d66b | 1583 | if (!rules) |
c238a1f5 | 1584 | return NULL; |
1017d66b | 1585 | |
9a07157d | 1586 | *rules = (UdevRules) { |
c4d44cba | 1587 | .resolve_name_timing = resolve_name_timing, |
1017d66b | 1588 | }; |
912541b0 | 1589 | |
c238a1f5 ZJS |
1590 | return rules; |
1591 | } | |
1592 | ||
1593 | int udev_rules_load(UdevRules **ret_rules, ResolveNameTiming resolve_name_timing) { | |
1594 | _cleanup_(udev_rules_freep) UdevRules *rules = NULL; | |
1595 | _cleanup_strv_free_ char **files = NULL; | |
c238a1f5 ZJS |
1596 | int r; |
1597 | ||
1598 | rules = udev_rules_new(resolve_name_timing); | |
1599 | if (!rules) | |
1600 | return -ENOMEM; | |
1601 | ||
116b91e8 | 1602 | r = conf_files_list_strv(&files, ".rules", NULL, 0, RULES_DIRS); |
1d791281 | 1603 | if (r < 0) |
c238a1f5 | 1604 | return log_debug_errno(r, "Failed to enumerate rules files: %m"); |
912541b0 | 1605 | |
f23810da | 1606 | STRV_FOREACH(f, files) { |
9b419eb0 | 1607 | r = udev_rules_parse_file(rules, *f, /* extra_checks = */ false, NULL); |
f23810da ZJS |
1608 | if (r < 0) |
1609 | log_debug_errno(r, "Failed to read rules file %s, ignoring: %m", *f); | |
1610 | } | |
912541b0 | 1611 | |
1d791281 ZJS |
1612 | *ret_rules = TAKE_PTR(rules); |
1613 | return 0; | |
c7521974 KS |
1614 | } |
1615 | ||
acfbd71c YW |
1616 | bool udev_rules_should_reload(UdevRules *rules) { |
1617 | _cleanup_hashmap_free_ Hashmap *stats_by_path = NULL; | |
1618 | int r; | |
1619 | ||
5c11fbe3 | 1620 | if (!rules) |
acfbd71c YW |
1621 | return true; |
1622 | ||
1623 | r = config_get_stats_by_path(".rules", NULL, 0, RULES_DIRS, /* check_dropins = */ false, &stats_by_path); | |
1624 | if (r < 0) { | |
1625 | log_warning_errno(r, "Failed to get stats of udev rules, ignoring: %m"); | |
1626 | return true; | |
1627 | } | |
1628 | ||
1629 | if (!stats_by_path_equal(rules->stats_by_path, stats_by_path)) { | |
1630 | log_debug("Udev rules need reloading"); | |
1631 | return true; | |
1632 | } | |
5c11fbe3 | 1633 | |
acfbd71c | 1634 | return false; |
6ada823a KS |
1635 | } |
1636 | ||
25de7aa7 | 1637 | static bool token_match_string(UdevRuleToken *token, const char *str) { |
12e2b70f | 1638 | const char *value; |
912541b0 KS |
1639 | bool match = false; |
1640 | ||
25de7aa7 YW |
1641 | assert(token); |
1642 | assert(token->value); | |
1643 | assert(token->type < _TK_M_MAX); | |
912541b0 | 1644 | |
25de7aa7 YW |
1645 | str = strempty(str); |
1646 | value = token->value; | |
1647 | ||
1648 | switch (token->match_type) { | |
1649 | case MATCH_TYPE_EMPTY: | |
1650 | match = isempty(str); | |
912541b0 | 1651 | break; |
25de7aa7 | 1652 | case MATCH_TYPE_SUBSYSTEM: |
9663ed37 | 1653 | match = STR_IN_SET(str, "subsystem", "class", "bus"); |
067cc51f YW |
1654 | break; |
1655 | case MATCH_TYPE_PLAIN_WITH_EMPTY: | |
1656 | if (isempty(str)) { | |
1657 | match = true; | |
1658 | break; | |
1659 | } | |
25de7aa7 YW |
1660 | _fallthrough_; |
1661 | case MATCH_TYPE_PLAIN: | |
1662 | NULSTR_FOREACH(i, value) | |
1663 | if (streq(i, str)) { | |
1664 | match = true; | |
1665 | break; | |
912541b0 | 1666 | } |
25de7aa7 | 1667 | break; |
067cc51f YW |
1668 | case MATCH_TYPE_GLOB_WITH_EMPTY: |
1669 | if (isempty(str)) { | |
1670 | match = true; | |
1671 | break; | |
1672 | } | |
1673 | _fallthrough_; | |
25de7aa7 YW |
1674 | case MATCH_TYPE_GLOB: |
1675 | NULSTR_FOREACH(i, value) | |
1676 | if ((fnmatch(i, str, 0) == 0)) { | |
1677 | match = true; | |
1678 | break; | |
912541b0 | 1679 | } |
912541b0 | 1680 | break; |
25de7aa7 | 1681 | default: |
04499a70 | 1682 | assert_not_reached(); |
912541b0 KS |
1683 | } |
1684 | ||
25de7aa7 | 1685 | return token->op == (match ? OP_MATCH : OP_NOMATCH); |
6880b25d KS |
1686 | } |
1687 | ||
c06ab041 | 1688 | static bool token_match_attr(UdevRuleToken *token, sd_device *dev, UdevEvent *event) { |
c8eaaf69 | 1689 | char nbuf[UDEV_NAME_SIZE], vbuf[UDEV_NAME_SIZE]; |
5ba7e798 | 1690 | const char *name, *value; |
f6caab89 | 1691 | bool truncated; |
912541b0 | 1692 | |
25de7aa7 | 1693 | assert(token); |
f6caab89 | 1694 | assert(IN_SET(token->type, TK_M_ATTR, TK_M_PARENTS_ATTR)); |
25de7aa7 YW |
1695 | assert(dev); |
1696 | assert(event); | |
1697 | ||
af2e52f4 | 1698 | name = token->data; |
25de7aa7 YW |
1699 | |
1700 | switch (token->attr_subst_type) { | |
1701 | case SUBST_TYPE_FORMAT: | |
f6caab89 YW |
1702 | (void) udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false, &truncated); |
1703 | if (truncated) { | |
e5a34948 YW |
1704 | log_event_truncated(dev, token, "sysfs attribute name", name, |
1705 | token->type == TK_M_ATTR ? "ATTR" : "ATTRS", /* is_match = */ true); | |
f6caab89 YW |
1706 | return false; |
1707 | } | |
1708 | ||
912541b0 | 1709 | name = nbuf; |
4831981d | 1710 | _fallthrough_; |
25de7aa7 | 1711 | case SUBST_TYPE_PLAIN: |
5bbcfbaa | 1712 | if (sd_device_get_sysattr_value(dev, name, &value) < 0) |
605aa52f | 1713 | return false; |
912541b0 | 1714 | break; |
25de7aa7 | 1715 | case SUBST_TYPE_SUBSYS: |
1223227f | 1716 | if (udev_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) < 0) |
605aa52f | 1717 | return false; |
912541b0 KS |
1718 | value = vbuf; |
1719 | break; | |
1720 | default: | |
04499a70 | 1721 | assert_not_reached(); |
912541b0 KS |
1722 | } |
1723 | ||
1724 | /* remove trailing whitespace, if not asked to match for it */ | |
25de7aa7 YW |
1725 | if (token->attr_match_remove_trailing_whitespace) { |
1726 | if (value != vbuf) { | |
1727 | strscpy(vbuf, sizeof(vbuf), value); | |
1728 | value = vbuf; | |
912541b0 | 1729 | } |
25de7aa7 YW |
1730 | |
1731 | delete_trailing_chars(vbuf, NULL); | |
912541b0 KS |
1732 | } |
1733 | ||
25de7aa7 | 1734 | return token_match_string(token, value); |
6880b25d KS |
1735 | } |
1736 | ||
25de7aa7 YW |
1737 | static int get_property_from_string(char *line, char **ret_key, char **ret_value) { |
1738 | char *key, *val; | |
1739 | size_t len; | |
6880b25d | 1740 | |
25de7aa7 YW |
1741 | assert(line); |
1742 | assert(ret_key); | |
1743 | assert(ret_value); | |
1744 | ||
1745 | /* find key */ | |
1746 | key = skip_leading_chars(line, NULL); | |
912541b0 | 1747 | |
25de7aa7 | 1748 | /* comment or empty line */ |
41c81c4a YW |
1749 | if (IN_SET(key[0], '#', '\0')) { |
1750 | *ret_key = *ret_value = NULL; | |
d838e145 | 1751 | return 0; |
41c81c4a | 1752 | } |
912541b0 | 1753 | |
25de7aa7 YW |
1754 | /* split key/value */ |
1755 | val = strchr(key, '='); | |
1756 | if (!val) | |
1757 | return -EINVAL; | |
1758 | *val++ = '\0'; | |
cf697ec0 | 1759 | |
25de7aa7 YW |
1760 | key = strstrip(key); |
1761 | if (isempty(key)) | |
1762 | return -EINVAL; | |
912541b0 | 1763 | |
25de7aa7 YW |
1764 | val = strstrip(val); |
1765 | if (isempty(val)) | |
1766 | return -EINVAL; | |
912541b0 | 1767 | |
25de7aa7 YW |
1768 | /* unquote */ |
1769 | if (IN_SET(val[0], '"', '\'')) { | |
1770 | len = strlen(val); | |
1771 | if (len == 1 || val[len-1] != val[0]) | |
1772 | return -EINVAL; | |
1773 | val[len-1] = '\0'; | |
1774 | val++; | |
1775 | } | |
adeba500 | 1776 | |
25de7aa7 YW |
1777 | *ret_key = key; |
1778 | *ret_value = val; | |
41c81c4a | 1779 | return 1; |
25de7aa7 | 1780 | } |
f4cf2e5b | 1781 | |
25de7aa7 | 1782 | static int import_parent_into_properties(sd_device *dev, const char *filter) { |
25de7aa7 YW |
1783 | sd_device *parent; |
1784 | int r; | |
f4cf2e5b | 1785 | |
25de7aa7 YW |
1786 | assert(dev); |
1787 | assert(filter); | |
912541b0 | 1788 | |
25de7aa7 YW |
1789 | r = sd_device_get_parent(dev, &parent); |
1790 | if (r == -ENOENT) | |
1791 | return 0; | |
1792 | if (r < 0) | |
1793 | return r; | |
1794 | ||
1795 | FOREACH_DEVICE_PROPERTY(parent, key, val) { | |
1796 | if (fnmatch(filter, key, 0) != 0) | |
912541b0 | 1797 | continue; |
25de7aa7 YW |
1798 | r = device_add_property(dev, key, val); |
1799 | if (r < 0) | |
1800 | return r; | |
1801 | } | |
912541b0 | 1802 | |
25de7aa7 YW |
1803 | return 1; |
1804 | } | |
912541b0 | 1805 | |
c8eaaf69 | 1806 | static int attr_subst_subdir(char attr[static UDEV_PATH_SIZE]) { |
25de7aa7 | 1807 | _cleanup_closedir_ DIR *dir = NULL; |
c8eaaf69 | 1808 | char buf[UDEV_PATH_SIZE], *p; |
25de7aa7 YW |
1809 | const char *tail; |
1810 | size_t len, size; | |
f6caab89 | 1811 | bool truncated; |
912541b0 | 1812 | |
2caa38e9 LP |
1813 | assert(attr); |
1814 | ||
25de7aa7 YW |
1815 | tail = strstr(attr, "/*/"); |
1816 | if (!tail) | |
f6caab89 | 1817 | return 0; |
912541b0 | 1818 | |
25de7aa7 YW |
1819 | len = tail - attr + 1; /* include slash at the end */ |
1820 | tail += 2; /* include slash at the beginning */ | |
88b013b2 | 1821 | |
25de7aa7 YW |
1822 | p = buf; |
1823 | size = sizeof(buf); | |
f6caab89 YW |
1824 | size -= strnpcpy_full(&p, size, attr, len, &truncated); |
1825 | if (truncated) | |
1826 | return -ENOENT; | |
88b013b2 | 1827 | |
25de7aa7 YW |
1828 | dir = opendir(buf); |
1829 | if (!dir) | |
1830 | return -errno; | |
912541b0 | 1831 | |
c7f0d9e5 ZJS |
1832 | FOREACH_DIRENT_ALL(de, dir, break) { |
1833 | if (de->d_name[0] == '.') | |
25de7aa7 YW |
1834 | continue; |
1835 | ||
f6caab89 YW |
1836 | strscpyl_full(p, size, &truncated, de->d_name, tail, NULL); |
1837 | if (truncated) | |
1838 | continue; | |
1839 | ||
25de7aa7 YW |
1840 | if (faccessat(dirfd(dir), p, F_OK, 0) < 0) |
1841 | continue; | |
1842 | ||
1843 | strcpy(attr, buf); | |
1844 | return 0; | |
1845 | } | |
1846 | ||
1847 | return -ENOENT; | |
1848 | } | |
1849 | ||
1850 | static int udev_rule_apply_token_to_event( | |
c06ab041 | 1851 | UdevRuleToken *token, |
25de7aa7 YW |
1852 | sd_device *dev, |
1853 | UdevEvent *event, | |
1854 | usec_t timeout_usec, | |
e2099267 | 1855 | int timeout_signal, |
25de7aa7 YW |
1856 | Hashmap *properties_list) { |
1857 | ||
25de7aa7 YW |
1858 | int r; |
1859 | ||
c06ab041 | 1860 | assert(token); |
25de7aa7 YW |
1861 | assert(dev); |
1862 | assert(event); | |
1863 | ||
1864 | /* This returns the following values: | |
1865 | * 0 on the current token does not match the event, | |
1866 | * 1 on the current token matches the event, and | |
1867 | * negative errno on some critical errors. */ | |
1868 | ||
25de7aa7 YW |
1869 | switch (token->type) { |
1870 | case TK_M_ACTION: { | |
a1130022 | 1871 | sd_device_action_t a; |
25de7aa7 | 1872 | |
a1130022 | 1873 | r = sd_device_get_action(dev, &a); |
25de7aa7 | 1874 | if (r < 0) |
c06ab041 | 1875 | return log_event_error_errno(dev, token, r, "Failed to get uevent action type: %m"); |
25de7aa7 YW |
1876 | |
1877 | return token_match_string(token, device_action_to_string(a)); | |
1878 | } | |
7dc846f9 YW |
1879 | case TK_M_DEVPATH: { |
1880 | const char *val; | |
1881 | ||
25de7aa7 YW |
1882 | r = sd_device_get_devpath(dev, &val); |
1883 | if (r < 0) | |
c06ab041 | 1884 | return log_event_error_errno(dev, token, r, "Failed to get devpath: %m"); |
25de7aa7 YW |
1885 | |
1886 | return token_match_string(token, val); | |
7dc846f9 | 1887 | } |
25de7aa7 | 1888 | case TK_M_KERNEL: |
7dc846f9 YW |
1889 | case TK_M_PARENTS_KERNEL: { |
1890 | const char *val; | |
1891 | ||
25de7aa7 YW |
1892 | r = sd_device_get_sysname(dev, &val); |
1893 | if (r < 0) | |
c06ab041 | 1894 | return log_event_error_errno(dev, token, r, "Failed to get sysname: %m"); |
25de7aa7 YW |
1895 | |
1896 | return token_match_string(token, val); | |
7dc846f9 | 1897 | } |
a1af8372 | 1898 | case TK_M_DEVLINK: |
25de7aa7 | 1899 | FOREACH_DEVICE_DEVLINK(dev, val) |
2b43ab00 | 1900 | if (token_match_string(token, strempty(startswith(val, "/dev/"))) == (token->op == OP_MATCH)) |
25de7aa7 YW |
1901 | return token->op == OP_MATCH; |
1902 | return token->op == OP_NOMATCH; | |
1903 | case TK_M_NAME: | |
1904 | return token_match_string(token, event->name); | |
7dc846f9 YW |
1905 | case TK_M_ENV: { |
1906 | const char *val; | |
1907 | ||
af2e52f4 | 1908 | if (sd_device_get_property_value(dev, token->data, &val) < 0) |
25de7aa7 YW |
1909 | val = hashmap_get(properties_list, token->data); |
1910 | ||
1911 | return token_match_string(token, val); | |
7dc846f9 | 1912 | } |
4801d8af | 1913 | case TK_M_CONST: { |
7dc846f9 | 1914 | const char *val, *k = token->data; |
4801d8af JS |
1915 | |
1916 | if (streq(k, "arch")) | |
1917 | val = architecture_to_string(uname_architecture()); | |
1918 | else if (streq(k, "virt")) | |
1919 | val = virtualization_to_string(detect_virtualization()); | |
6e2e83b4 DB |
1920 | else if (streq(k, "cvm")) |
1921 | val = confidential_virtualization_to_string(detect_confidential_virtualization()); | |
4801d8af | 1922 | else |
04499a70 | 1923 | assert_not_reached(); |
4801d8af JS |
1924 | return token_match_string(token, val); |
1925 | } | |
25de7aa7 | 1926 | case TK_M_TAG: |
a1af8372 | 1927 | case TK_M_PARENTS_TAG: |
31024990 | 1928 | FOREACH_DEVICE_CURRENT_TAG(dev, val) |
2b43ab00 | 1929 | if (token_match_string(token, val) == (token->op == OP_MATCH)) |
25de7aa7 YW |
1930 | return token->op == OP_MATCH; |
1931 | return token->op == OP_NOMATCH; | |
1932 | case TK_M_SUBSYSTEM: | |
7dc846f9 YW |
1933 | case TK_M_PARENTS_SUBSYSTEM: { |
1934 | const char *val; | |
1935 | ||
25de7aa7 YW |
1936 | r = sd_device_get_subsystem(dev, &val); |
1937 | if (r == -ENOENT) | |
1938 | val = NULL; | |
1939 | else if (r < 0) | |
c06ab041 | 1940 | return log_event_error_errno(dev, token, r, "Failed to get subsystem: %m"); |
25de7aa7 YW |
1941 | |
1942 | return token_match_string(token, val); | |
7dc846f9 | 1943 | } |
25de7aa7 | 1944 | case TK_M_DRIVER: |
7dc846f9 YW |
1945 | case TK_M_PARENTS_DRIVER: { |
1946 | const char *val; | |
1947 | ||
25de7aa7 YW |
1948 | r = sd_device_get_driver(dev, &val); |
1949 | if (r == -ENOENT) | |
1950 | val = NULL; | |
1951 | else if (r < 0) | |
c06ab041 | 1952 | return log_event_error_errno(dev, token, r, "Failed to get driver: %m"); |
25de7aa7 YW |
1953 | |
1954 | return token_match_string(token, val); | |
7dc846f9 | 1955 | } |
25de7aa7 YW |
1956 | case TK_M_ATTR: |
1957 | case TK_M_PARENTS_ATTR: | |
c06ab041 | 1958 | return token_match_attr(token, dev, event); |
25de7aa7 YW |
1959 | case TK_M_SYSCTL: { |
1960 | _cleanup_free_ char *value = NULL; | |
7dc846f9 | 1961 | char buf[UDEV_PATH_SIZE]; |
f6caab89 YW |
1962 | bool truncated; |
1963 | ||
1964 | (void) udev_event_apply_format(event, token->data, buf, sizeof(buf), false, &truncated); | |
1965 | if (truncated) { | |
e5a34948 | 1966 | log_event_truncated(dev, token, "sysctl entry name", token->data, "SYSCTL", /* is_match = */ true); |
f6caab89 YW |
1967 | return false; |
1968 | } | |
25de7aa7 | 1969 | |
25de7aa7 YW |
1970 | r = sysctl_read(sysctl_normalize(buf), &value); |
1971 | if (r < 0 && r != -ENOENT) | |
c06ab041 | 1972 | return log_event_error_errno(dev, token, r, "Failed to read sysctl '%s': %m", buf); |
25de7aa7 YW |
1973 | |
1974 | return token_match_string(token, strstrip(value)); | |
1975 | } | |
1976 | case TK_M_TEST: { | |
1977 | mode_t mode = PTR_TO_MODE(token->data); | |
7dc846f9 | 1978 | char buf[UDEV_PATH_SIZE]; |
25de7aa7 | 1979 | struct stat statbuf; |
f6caab89 YW |
1980 | bool match, truncated; |
1981 | ||
1982 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); | |
1983 | if (truncated) { | |
e5a34948 | 1984 | log_event_truncated(dev, token, "file name", token->value, "TEST", /* is_match = */ true); |
f6caab89 YW |
1985 | return false; |
1986 | } | |
25de7aa7 | 1987 | |
25de7aa7 | 1988 | if (!path_is_absolute(buf) && |
1223227f | 1989 | udev_resolve_subsys_kernel(buf, buf, sizeof(buf), false) < 0) { |
c8eaaf69 | 1990 | char tmp[UDEV_PATH_SIZE]; |
7dc846f9 | 1991 | const char *val; |
25de7aa7 YW |
1992 | |
1993 | r = sd_device_get_syspath(dev, &val); | |
1994 | if (r < 0) | |
c06ab041 | 1995 | return log_event_error_errno(dev, token, r, "Failed to get syspath: %m"); |
25de7aa7 | 1996 | |
f6caab89 YW |
1997 | strscpy_full(tmp, sizeof(tmp), buf, &truncated); |
1998 | assert(!truncated); | |
1999 | strscpyl_full(buf, sizeof(buf), &truncated, val, "/", tmp, NULL); | |
2000 | if (truncated) | |
2001 | return false; | |
25de7aa7 YW |
2002 | } |
2003 | ||
2004 | r = attr_subst_subdir(buf); | |
2005 | if (r == -ENOENT) | |
2006 | return token->op == OP_NOMATCH; | |
2007 | if (r < 0) | |
c06ab041 | 2008 | return log_event_error_errno(dev, token, r, "Failed to test for the existence of '%s': %m", buf); |
25de7aa7 YW |
2009 | |
2010 | if (stat(buf, &statbuf) < 0) | |
2011 | return token->op == OP_NOMATCH; | |
2012 | ||
2013 | if (mode == MODE_INVALID) | |
2014 | return token->op == OP_MATCH; | |
2015 | ||
7a182f10 | 2016 | match = (statbuf.st_mode & mode) > 0; |
25de7aa7 YW |
2017 | return token->op == (match ? OP_MATCH : OP_NOMATCH); |
2018 | } | |
2019 | case TK_M_PROGRAM: { | |
c3613ee5 | 2020 | char buf[UDEV_LINE_SIZE], result[UDEV_LINE_SIZE]; |
f6caab89 | 2021 | bool truncated; |
7dc846f9 | 2022 | size_t count; |
25de7aa7 YW |
2023 | |
2024 | event->program_result = mfree(event->program_result); | |
f6caab89 YW |
2025 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); |
2026 | if (truncated) { | |
e5a34948 | 2027 | log_event_truncated(dev, token, "command", token->value, "PROGRAM", /* is_match = */ true); |
f6caab89 YW |
2028 | return false; |
2029 | } | |
2030 | ||
c06ab041 | 2031 | log_event_debug(dev, token, "Running PROGRAM '%s'", buf); |
25de7aa7 | 2032 | |
6b6e471a | 2033 | r = udev_event_spawn(event, timeout_usec, timeout_signal, true, buf, result, sizeof(result), NULL); |
08de1958 YW |
2034 | if (r != 0) { |
2035 | if (r < 0) | |
c06ab041 | 2036 | log_event_warning_errno(dev, token, r, "Failed to execute \"%s\": %m", buf); |
08de1958 | 2037 | else /* returned value is positive when program fails */ |
c06ab041 | 2038 | log_event_debug(dev, token, "Command \"%s\" returned %d (error)", buf, r); |
25de7aa7 | 2039 | return token->op == OP_NOMATCH; |
08de1958 | 2040 | } |
25de7aa7 YW |
2041 | |
2042 | delete_trailing_chars(result, "\n"); | |
393fcaf7 | 2043 | count = udev_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); |
25de7aa7 | 2044 | if (count > 0) |
c06ab041 YW |
2045 | log_event_debug(dev, token, |
2046 | "Replaced %zu character(s) in result of \"%s\"", | |
2047 | count, buf); | |
25de7aa7 YW |
2048 | |
2049 | event->program_result = strdup(result); | |
2050 | return token->op == OP_MATCH; | |
2051 | } | |
2052 | case TK_M_IMPORT_FILE: { | |
2053 | _cleanup_fclose_ FILE *f = NULL; | |
7dc846f9 | 2054 | char buf[UDEV_PATH_SIZE]; |
f6caab89 YW |
2055 | bool truncated; |
2056 | ||
2057 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); | |
2058 | if (truncated) { | |
e5a34948 | 2059 | log_event_truncated(dev, token, "file name to be imported", token->value, "IMPORT", /* is_match = */ true); |
f6caab89 YW |
2060 | return false; |
2061 | } | |
25de7aa7 | 2062 | |
c06ab041 | 2063 | log_event_debug(dev, token, "Importing properties from '%s'", buf); |
25de7aa7 YW |
2064 | |
2065 | f = fopen(buf, "re"); | |
2066 | if (!f) { | |
2067 | if (errno != ENOENT) | |
c06ab041 | 2068 | return log_event_error_errno(dev, token, errno, "Failed to open '%s': %m", buf); |
25de7aa7 YW |
2069 | return token->op == OP_NOMATCH; |
2070 | } | |
912541b0 | 2071 | |
25de7aa7 YW |
2072 | for (;;) { |
2073 | _cleanup_free_ char *line = NULL; | |
2074 | char *key, *value; | |
2075 | ||
2076 | r = read_line(f, LONG_LINE_MAX, &line); | |
2077 | if (r < 0) { | |
c06ab041 | 2078 | log_event_debug_errno(dev, token, r, "Failed to read '%s', ignoring: %m", buf); |
25de7aa7 YW |
2079 | return token->op == OP_NOMATCH; |
2080 | } | |
2081 | if (r == 0) | |
912541b0 | 2082 | break; |
25de7aa7 YW |
2083 | |
2084 | r = get_property_from_string(line, &key, &value); | |
23bf8dd7 | 2085 | if (r < 0) { |
c06ab041 YW |
2086 | log_event_debug_errno(dev, token, r, |
2087 | "Failed to parse key and value from '%s', ignoring: %m", | |
2088 | line); | |
25de7aa7 | 2089 | continue; |
23bf8dd7 | 2090 | } |
41c81c4a YW |
2091 | if (r == 0) |
2092 | continue; | |
25de7aa7 YW |
2093 | |
2094 | r = device_add_property(dev, key, value); | |
2095 | if (r < 0) | |
c06ab041 YW |
2096 | return log_event_error_errno(dev, token, r, |
2097 | "Failed to add property %s=%s: %m", | |
2098 | key, value); | |
912541b0 | 2099 | } |
912541b0 | 2100 | |
25de7aa7 YW |
2101 | return token->op == OP_MATCH; |
2102 | } | |
2103 | case TK_M_IMPORT_PROGRAM: { | |
28a50651 | 2104 | _cleanup_strv_free_ char **lines = NULL; |
c3613ee5 | 2105 | char buf[UDEV_LINE_SIZE], result[UDEV_LINE_SIZE]; |
f6caab89 YW |
2106 | bool truncated; |
2107 | ||
2108 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); | |
2109 | if (truncated) { | |
e5a34948 | 2110 | log_event_truncated(dev, token, "command", token->value, "IMPORT", /* is_match = */ true); |
f6caab89 YW |
2111 | return false; |
2112 | } | |
25de7aa7 | 2113 | |
c06ab041 | 2114 | log_event_debug(dev, token, "Importing properties from results of '%s'", buf); |
25de7aa7 | 2115 | |
6b6e471a | 2116 | r = udev_event_spawn(event, timeout_usec, timeout_signal, true, buf, result, sizeof result, &truncated); |
08de1958 YW |
2117 | if (r != 0) { |
2118 | if (r < 0) | |
c06ab041 | 2119 | log_event_warning_errno(dev, token, r, "Failed to execute '%s', ignoring: %m", buf); |
08de1958 | 2120 | else /* returned value is positive when program fails */ |
c06ab041 | 2121 | log_event_debug(dev, token, "Command \"%s\" returned %d (error), ignoring", buf, r); |
25de7aa7 YW |
2122 | return token->op == OP_NOMATCH; |
2123 | } | |
2124 | ||
6b6e471a YW |
2125 | if (truncated) { |
2126 | bool found = false; | |
2127 | ||
2128 | /* Drop the last line. */ | |
3e3ee420 | 2129 | for (char *p = PTR_SUB1(buf + strlen(buf), buf); p; p = PTR_SUB1(p, buf)) |
6b6e471a YW |
2130 | if (strchr(NEWLINE, *p)) { |
2131 | *p = '\0'; | |
2132 | found = true; | |
2133 | } else if (found) | |
2134 | break; | |
2135 | } | |
2136 | ||
86c783d9 | 2137 | r = strv_split_newlines_full(&lines, result, EXTRACT_RETAIN_ESCAPE); |
567c19a6 YW |
2138 | if (r == -ENOMEM) |
2139 | return log_oom(); | |
2140 | if (r < 0) { | |
c06ab041 YW |
2141 | log_event_warning_errno(dev, token, r, |
2142 | "Failed to extract lines from result of command \"%s\", ignoring: %m", buf); | |
567c19a6 YW |
2143 | return false; |
2144 | } | |
25de7aa7 | 2145 | |
28a50651 YW |
2146 | STRV_FOREACH(line, lines) { |
2147 | char *key, *value; | |
25de7aa7 | 2148 | |
28a50651 | 2149 | r = get_property_from_string(*line, &key, &value); |
23bf8dd7 | 2150 | if (r < 0) { |
c06ab041 YW |
2151 | log_event_debug_errno(dev, token, r, |
2152 | "Failed to parse key and value from '%s', ignoring: %m", | |
2153 | *line); | |
25de7aa7 | 2154 | continue; |
23bf8dd7 | 2155 | } |
41c81c4a YW |
2156 | if (r == 0) |
2157 | continue; | |
25de7aa7 YW |
2158 | |
2159 | r = device_add_property(dev, key, value); | |
2160 | if (r < 0) | |
c06ab041 YW |
2161 | return log_event_error_errno(dev, token, r, |
2162 | "Failed to add property %s=%s: %m", | |
2163 | key, value); | |
912541b0 | 2164 | } |
912541b0 | 2165 | |
25de7aa7 YW |
2166 | return token->op == OP_MATCH; |
2167 | } | |
2168 | case TK_M_IMPORT_BUILTIN: { | |
2169 | UdevBuiltinCommand cmd = PTR_TO_UDEV_BUILTIN_CMD(token->data); | |
b5f1c0d8 | 2170 | assert(cmd >= 0 && cmd < _UDEV_BUILTIN_MAX); |
25de7aa7 | 2171 | unsigned mask = 1U << (int) cmd; |
c3613ee5 | 2172 | char buf[UDEV_LINE_SIZE]; |
f6caab89 | 2173 | bool truncated; |
25de7aa7 YW |
2174 | |
2175 | if (udev_builtin_run_once(cmd)) { | |
2176 | /* check if we ran already */ | |
2177 | if (event->builtin_run & mask) { | |
c06ab041 YW |
2178 | log_event_debug(dev, token, "Skipping builtin '%s' in IMPORT key", |
2179 | udev_builtin_name(cmd)); | |
25de7aa7 YW |
2180 | /* return the result from earlier run */ |
2181 | return token->op == (event->builtin_ret & mask ? OP_NOMATCH : OP_MATCH); | |
912541b0 | 2182 | } |
25de7aa7 YW |
2183 | /* mark as ran */ |
2184 | event->builtin_run |= mask; | |
912541b0 | 2185 | } |
25de7aa7 | 2186 | |
f6caab89 YW |
2187 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); |
2188 | if (truncated) { | |
e5a34948 | 2189 | log_event_truncated(dev, token, "builtin command", token->value, "IMPORT", /* is_match = */ true); |
f6caab89 YW |
2190 | return false; |
2191 | } | |
2192 | ||
c06ab041 | 2193 | log_event_debug(dev, token, "Importing properties from results of builtin command '%s'", buf); |
25de7aa7 | 2194 | |
5668f3a7 | 2195 | r = udev_builtin_run(event, cmd, buf, false); |
25de7aa7 YW |
2196 | if (r < 0) { |
2197 | /* remember failure */ | |
c06ab041 | 2198 | log_event_debug_errno(dev, token, r, "Failed to run builtin '%s': %m", buf); |
25de7aa7 YW |
2199 | event->builtin_ret |= mask; |
2200 | } | |
2201 | return token->op == (r >= 0 ? OP_MATCH : OP_NOMATCH); | |
2202 | } | |
2203 | case TK_M_IMPORT_DB: { | |
7dc846f9 YW |
2204 | const char *val; |
2205 | ||
25de7aa7 YW |
2206 | if (!event->dev_db_clone) |
2207 | return token->op == OP_NOMATCH; | |
2208 | r = sd_device_get_property_value(event->dev_db_clone, token->value, &val); | |
2209 | if (r == -ENOENT) | |
2210 | return token->op == OP_NOMATCH; | |
2211 | if (r < 0) | |
c06ab041 YW |
2212 | return log_event_error_errno(dev, token, r, |
2213 | "Failed to get property '%s' from database: %m", | |
2214 | token->value); | |
25de7aa7 YW |
2215 | |
2216 | r = device_add_property(dev, token->value, val); | |
2217 | if (r < 0) | |
c06ab041 YW |
2218 | return log_event_error_errno(dev, token, r, "Failed to add property '%s=%s': %m", |
2219 | token->value, val); | |
25de7aa7 YW |
2220 | return token->op == OP_MATCH; |
2221 | } | |
2222 | case TK_M_IMPORT_CMDLINE: { | |
2223 | _cleanup_free_ char *value = NULL; | |
2224 | ||
09835de3 | 2225 | r = proc_cmdline_get_key(token->value, PROC_CMDLINE_VALUE_OPTIONAL|PROC_CMDLINE_IGNORE_EFI_OPTIONS, &value); |
25de7aa7 | 2226 | if (r < 0) |
c06ab041 YW |
2227 | return log_event_error_errno(dev, token, r, |
2228 | "Failed to read '%s' option from /proc/cmdline: %m", | |
2229 | token->value); | |
25de7aa7 YW |
2230 | if (r == 0) |
2231 | return token->op == OP_NOMATCH; | |
2232 | ||
2233 | r = device_add_property(dev, token->value, value ?: "1"); | |
2234 | if (r < 0) | |
c06ab041 YW |
2235 | return log_event_error_errno(dev, token, r, "Failed to add property '%s=%s': %m", |
2236 | token->value, value ?: "1"); | |
25de7aa7 YW |
2237 | return token->op == OP_MATCH; |
2238 | } | |
2239 | case TK_M_IMPORT_PARENT: { | |
7dc846f9 | 2240 | char buf[UDEV_PATH_SIZE]; |
f6caab89 YW |
2241 | bool truncated; |
2242 | ||
2243 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); | |
2244 | if (truncated) { | |
e5a34948 | 2245 | log_event_truncated(dev, token, "property name", token->value, "IMPORT", /* is_match = */ true); |
f6caab89 YW |
2246 | return false; |
2247 | } | |
7dc846f9 | 2248 | |
25de7aa7 YW |
2249 | r = import_parent_into_properties(dev, buf); |
2250 | if (r < 0) | |
c06ab041 YW |
2251 | return log_event_error_errno(dev, token, r, |
2252 | "Failed to import properties '%s' from parent: %m", | |
2253 | buf); | |
25de7aa7 YW |
2254 | return token->op == (r > 0 ? OP_MATCH : OP_NOMATCH); |
2255 | } | |
2256 | case TK_M_RESULT: | |
2257 | return token_match_string(token, event->program_result); | |
2258 | case TK_A_OPTIONS_STRING_ESCAPE_NONE: | |
2259 | event->esc = ESCAPE_NONE; | |
2260 | break; | |
2261 | case TK_A_OPTIONS_STRING_ESCAPE_REPLACE: | |
2262 | event->esc = ESCAPE_REPLACE; | |
2263 | break; | |
2264 | case TK_A_OPTIONS_DB_PERSIST: | |
2265 | device_set_db_persist(dev); | |
2266 | break; | |
2267 | case TK_A_OPTIONS_INOTIFY_WATCH: | |
2268 | if (event->inotify_watch_final) | |
912541b0 | 2269 | break; |
25de7aa7 YW |
2270 | if (token->op == OP_ASSIGN_FINAL) |
2271 | event->inotify_watch_final = true; | |
2272 | ||
2273 | event->inotify_watch = token->data; | |
2274 | break; | |
2275 | case TK_A_OPTIONS_DEVLINK_PRIORITY: | |
2276 | device_set_devlink_priority(dev, PTR_TO_INT(token->data)); | |
2277 | break; | |
1a0bd015 YW |
2278 | case TK_A_OPTIONS_LOG_LEVEL: { |
2279 | int level = PTR_TO_INT(token->data); | |
2280 | ||
2281 | if (level < 0) | |
2282 | level = event->default_log_level; | |
2283 | ||
3cc6b14a | 2284 | log_set_max_level(level); |
1a0bd015 YW |
2285 | |
2286 | if (level == LOG_DEBUG && !event->log_level_was_debug) { | |
2287 | /* The log level becomes LOG_DEBUG at first time. Let's log basic information. */ | |
2288 | log_device_uevent(dev, "The log level is changed to 'debug' while processing device"); | |
2289 | event->log_level_was_debug = true; | |
2290 | } | |
2291 | ||
2292 | break; | |
2293 | } | |
25de7aa7 | 2294 | case TK_A_OWNER: { |
c8eaaf69 | 2295 | char owner[UDEV_NAME_SIZE]; |
25de7aa7 | 2296 | const char *ow = owner; |
f6caab89 | 2297 | bool truncated; |
25de7aa7 YW |
2298 | |
2299 | if (event->owner_final) | |
912541b0 | 2300 | break; |
25de7aa7 YW |
2301 | if (token->op == OP_ASSIGN_FINAL) |
2302 | event->owner_final = true; | |
2303 | ||
f6caab89 YW |
2304 | (void) udev_event_apply_format(event, token->value, owner, sizeof(owner), false, &truncated); |
2305 | if (truncated) { | |
e5a34948 | 2306 | log_event_truncated(dev, token, "user name", token->value, "OWNER", /* is_match = */ false); |
f6caab89 YW |
2307 | break; |
2308 | } | |
2309 | ||
25de7aa7 YW |
2310 | r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING); |
2311 | if (r < 0) | |
c06ab041 | 2312 | log_unknown_owner(dev, token->rule_line, r, "user", owner); |
25de7aa7 | 2313 | else |
c06ab041 | 2314 | log_event_debug(dev, token, "OWNER %s(%u)", owner, event->uid); |
25de7aa7 YW |
2315 | break; |
2316 | } | |
2317 | case TK_A_GROUP: { | |
c8eaaf69 | 2318 | char group[UDEV_NAME_SIZE]; |
25de7aa7 | 2319 | const char *gr = group; |
f6caab89 | 2320 | bool truncated; |
25de7aa7 YW |
2321 | |
2322 | if (event->group_final) | |
912541b0 | 2323 | break; |
25de7aa7 YW |
2324 | if (token->op == OP_ASSIGN_FINAL) |
2325 | event->group_final = true; | |
c26547d6 | 2326 | |
f6caab89 YW |
2327 | (void) udev_event_apply_format(event, token->value, group, sizeof(group), false, &truncated); |
2328 | if (truncated) { | |
e5a34948 | 2329 | log_event_truncated(dev, token, "group name", token->value, "GROUP", /* is_match = */ false); |
f6caab89 YW |
2330 | break; |
2331 | } | |
2332 | ||
25de7aa7 YW |
2333 | r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING); |
2334 | if (r < 0) | |
c06ab041 | 2335 | log_unknown_owner(dev, token->rule_line, r, "group", group); |
25de7aa7 | 2336 | else |
c06ab041 | 2337 | log_event_debug(dev, token, "GROUP %s(%u)", group, event->gid); |
25de7aa7 YW |
2338 | break; |
2339 | } | |
2340 | case TK_A_MODE: { | |
c8eaaf69 | 2341 | char mode_str[UDEV_NAME_SIZE]; |
f6caab89 | 2342 | bool truncated; |
d838e145 | 2343 | |
25de7aa7 YW |
2344 | if (event->mode_final) |
2345 | break; | |
2346 | if (token->op == OP_ASSIGN_FINAL) | |
2347 | event->mode_final = true; | |
4f985bd8 | 2348 | |
f6caab89 YW |
2349 | (void) udev_event_apply_format(event, token->value, mode_str, sizeof(mode_str), false, &truncated); |
2350 | if (truncated) { | |
e5a34948 | 2351 | log_event_truncated(dev, token, "mode", token->value, "MODE", /* is_match = */ false); |
f6caab89 YW |
2352 | break; |
2353 | } | |
2354 | ||
25de7aa7 YW |
2355 | r = parse_mode(mode_str, &event->mode); |
2356 | if (r < 0) | |
c06ab041 | 2357 | log_event_error_errno(dev, token, r, "Failed to parse mode '%s', ignoring: %m", mode_str); |
25de7aa7 | 2358 | else |
c06ab041 | 2359 | log_event_debug(dev, token, "MODE %#o", event->mode); |
25de7aa7 YW |
2360 | break; |
2361 | } | |
2362 | case TK_A_OWNER_ID: | |
2363 | if (event->owner_final) | |
2364 | break; | |
2365 | if (token->op == OP_ASSIGN_FINAL) | |
2366 | event->owner_final = true; | |
2367 | if (!token->data) | |
2368 | break; | |
2369 | event->uid = PTR_TO_UID(token->data); | |
c06ab041 | 2370 | log_event_debug(dev, token, "OWNER %u", event->uid); |
25de7aa7 YW |
2371 | break; |
2372 | case TK_A_GROUP_ID: | |
2373 | if (event->group_final) | |
2374 | break; | |
2375 | if (token->op == OP_ASSIGN_FINAL) | |
2376 | event->group_final = true; | |
2377 | if (!token->data) | |
2378 | break; | |
2379 | event->gid = PTR_TO_GID(token->data); | |
c06ab041 | 2380 | log_event_debug(dev, token, "GROUP %u", event->gid); |
25de7aa7 YW |
2381 | break; |
2382 | case TK_A_MODE_ID: | |
2383 | if (event->mode_final) | |
2384 | break; | |
2385 | if (token->op == OP_ASSIGN_FINAL) | |
2386 | event->mode_final = true; | |
2387 | if (!token->data) | |
2388 | break; | |
2389 | event->mode = PTR_TO_MODE(token->data); | |
c06ab041 | 2390 | log_event_debug(dev, token, "MODE %#o", event->mode); |
25de7aa7 YW |
2391 | break; |
2392 | case TK_A_SECLABEL: { | |
2393 | _cleanup_free_ char *name = NULL, *label = NULL; | |
c8eaaf69 | 2394 | char label_str[UDEV_LINE_SIZE] = {}; |
f6caab89 | 2395 | bool truncated; |
d838e145 | 2396 | |
af2e52f4 | 2397 | name = strdup(token->data); |
25de7aa7 YW |
2398 | if (!name) |
2399 | return log_oom(); | |
d838e145 | 2400 | |
f6caab89 YW |
2401 | (void) udev_event_apply_format(event, token->value, label_str, sizeof(label_str), false, &truncated); |
2402 | if (truncated) { | |
e5a34948 | 2403 | log_event_truncated(dev, token, "security label", token->value, "SECLABEL", /* is_match = */ false); |
f6caab89 YW |
2404 | break; |
2405 | } | |
2406 | ||
25de7aa7 YW |
2407 | if (!isempty(label_str)) |
2408 | label = strdup(label_str); | |
2409 | else | |
2410 | label = strdup(token->value); | |
2411 | if (!label) | |
2412 | return log_oom(); | |
a6ca3c19 | 2413 | |
25de7aa7 YW |
2414 | if (token->op == OP_ASSIGN) |
2415 | ordered_hashmap_clear_free_free(event->seclabel_list); | |
07845c14 | 2416 | |
f5b73a7f SS |
2417 | r = ordered_hashmap_ensure_put(&event->seclabel_list, NULL, name, label); |
2418 | if (r == -ENOMEM) | |
25de7aa7 | 2419 | return log_oom(); |
25de7aa7 | 2420 | if (r < 0) |
c06ab041 | 2421 | return log_event_error_errno(dev, token, r, "Failed to store SECLABEL{%s}='%s': %m", name, label); |
f5b73a7f | 2422 | |
c06ab041 | 2423 | log_event_debug(dev, token, "SECLABEL{%s}='%s'", name, label); |
3c291376 SS |
2424 | |
2425 | TAKE_PTR(name); | |
2426 | TAKE_PTR(label); | |
25de7aa7 YW |
2427 | break; |
2428 | } | |
2429 | case TK_A_ENV: { | |
7dc846f9 | 2430 | const char *val, *name = token->data; |
c8eaaf69 | 2431 | char value_new[UDEV_NAME_SIZE], *p = value_new; |
7dc846f9 | 2432 | size_t count, l = sizeof(value_new); |
f6caab89 | 2433 | bool truncated; |
07845c14 | 2434 | |
25de7aa7 YW |
2435 | if (isempty(token->value)) { |
2436 | if (token->op == OP_ADD) | |
912541b0 | 2437 | break; |
25de7aa7 YW |
2438 | r = device_add_property(dev, name, NULL); |
2439 | if (r < 0) | |
c06ab041 | 2440 | return log_event_error_errno(dev, token, r, "Failed to remove property '%s': %m", name); |
912541b0 KS |
2441 | break; |
2442 | } | |
912541b0 | 2443 | |
25de7aa7 | 2444 | if (token->op == OP_ADD && |
f6caab89 YW |
2445 | sd_device_get_property_value(dev, name, &val) >= 0) { |
2446 | l = strpcpyl_full(&p, l, &truncated, val, " ", NULL); | |
2447 | if (truncated) { | |
c06ab041 YW |
2448 | log_event_warning(dev, token, |
2449 | "The buffer for the property '%s' is full, " | |
2450 | "refusing to append the new value '%s'.", name, token->value); | |
f6caab89 YW |
2451 | break; |
2452 | } | |
2453 | } | |
2454 | ||
2455 | (void) udev_event_apply_format(event, token->value, p, l, false, &truncated); | |
2456 | if (truncated) { | |
e5a34948 YW |
2457 | _cleanup_free_ char *key_with_name = strjoin("ENV{", name, "}"); |
2458 | log_event_truncated(dev, token, "property value", token->value, | |
2459 | key_with_name ?: "ENV", /* is_match = */ false); | |
f6caab89 YW |
2460 | break; |
2461 | } | |
25de7aa7 | 2462 | |
ea0f4578 | 2463 | if (event->esc == ESCAPE_REPLACE) { |
7db6b672 | 2464 | count = udev_replace_chars(p, NULL); |
ea0f4578 | 2465 | if (count > 0) |
c06ab041 YW |
2466 | log_event_debug(dev, token, |
2467 | "Replaced %zu slash(es) from result of ENV{%s}%s=\"%s\"", | |
2468 | count, name, token->op == OP_ADD ? "+" : "", token->value); | |
ea0f4578 | 2469 | } |
d838e145 | 2470 | |
25de7aa7 YW |
2471 | r = device_add_property(dev, name, value_new); |
2472 | if (r < 0) | |
c06ab041 | 2473 | return log_event_error_errno(dev, token, r, "Failed to add property '%s=%s': %m", name, value_new); |
25de7aa7 YW |
2474 | break; |
2475 | } | |
2476 | case TK_A_TAG: { | |
7dc846f9 | 2477 | char buf[UDEV_PATH_SIZE]; |
f6caab89 YW |
2478 | bool truncated; |
2479 | ||
2480 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); | |
2481 | if (truncated) { | |
e5a34948 | 2482 | log_event_truncated(dev, token, "tag name", token->value, "TAG", /* is_match = */ false); |
f6caab89 YW |
2483 | break; |
2484 | } | |
7dc846f9 | 2485 | |
25de7aa7 YW |
2486 | if (token->op == OP_ASSIGN) |
2487 | device_cleanup_tags(dev); | |
2488 | ||
25de7aa7 YW |
2489 | if (token->op == OP_REMOVE) |
2490 | device_remove_tag(dev, buf); | |
2491 | else { | |
e77b146f | 2492 | r = device_add_tag(dev, buf, true); |
0b4c70b4 YW |
2493 | if (r == -ENOMEM) |
2494 | return log_oom(); | |
25de7aa7 | 2495 | if (r < 0) |
0b4c70b4 | 2496 | log_event_warning_errno(dev, token, r, "Failed to add tag '%s', ignoring: %m", buf); |
25de7aa7 YW |
2497 | } |
2498 | break; | |
2499 | } | |
2500 | case TK_A_NAME: { | |
7dc846f9 | 2501 | char buf[UDEV_PATH_SIZE]; |
f6caab89 | 2502 | bool truncated; |
7dc846f9 YW |
2503 | size_t count; |
2504 | ||
25de7aa7 YW |
2505 | if (event->name_final) |
2506 | break; | |
2507 | if (token->op == OP_ASSIGN_FINAL) | |
2508 | event->name_final = true; | |
912541b0 | 2509 | |
d37f3e3e | 2510 | if (sd_device_get_ifindex(dev, NULL) < 0) { |
c06ab041 YW |
2511 | log_event_error(dev, token, |
2512 | "Only network interfaces can be renamed, ignoring NAME=\"%s\".", | |
2513 | token->value); | |
d37f3e3e YW |
2514 | break; |
2515 | } | |
2516 | ||
f6caab89 YW |
2517 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); |
2518 | if (truncated) { | |
e5a34948 | 2519 | log_event_truncated(dev, token, "network interface name", token->value, "NAME", /* is_match = */ false); |
f6caab89 YW |
2520 | break; |
2521 | } | |
2522 | ||
25de7aa7 | 2523 | if (IN_SET(event->esc, ESCAPE_UNSET, ESCAPE_REPLACE)) { |
b4d885f0 YW |
2524 | if (naming_scheme_has(NAMING_REPLACE_STRICTLY)) |
2525 | count = udev_replace_ifname(buf); | |
2526 | else | |
2527 | count = udev_replace_chars(buf, "/"); | |
912541b0 | 2528 | if (count > 0) |
c06ab041 YW |
2529 | log_event_debug(dev, token, |
2530 | "Replaced %zu character(s) from result of NAME=\"%s\"", | |
2531 | count, token->value); | |
912541b0 | 2532 | } |
b3f9c17a YW |
2533 | r = free_and_strdup_warn(&event->name, buf); |
2534 | if (r < 0) | |
2535 | return r; | |
25de7aa7 | 2536 | |
c06ab041 | 2537 | log_event_debug(dev, token, "NAME '%s'", event->name); |
25de7aa7 YW |
2538 | break; |
2539 | } | |
2540 | case TK_A_DEVLINK: { | |
733b7bfd | 2541 | char buf[UDEV_PATH_SIZE]; |
f6caab89 | 2542 | bool truncated; |
7dc846f9 | 2543 | size_t count; |
25de7aa7 YW |
2544 | |
2545 | if (event->devlink_final) | |
2546 | break; | |
2547 | if (sd_device_get_devnum(dev, NULL) < 0) | |
2548 | break; | |
2549 | if (token->op == OP_ASSIGN_FINAL) | |
2550 | event->devlink_final = true; | |
2551 | if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL)) | |
2552 | device_cleanup_devlinks(dev); | |
2553 | ||
03ff9c70 YW |
2554 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), |
2555 | /* replace_whitespace = */ event->esc != ESCAPE_NONE, &truncated); | |
f6caab89 | 2556 | if (truncated) { |
e5a34948 | 2557 | log_event_truncated(dev, token, "symbolic link path", token->value, "SYMLINK", /* is_match = */ false); |
f6caab89 YW |
2558 | break; |
2559 | } | |
2560 | ||
03ff9c70 | 2561 | /* By default or string_escape=none, allow multiple symlinks separated by spaces. */ |
25de7aa7 | 2562 | if (event->esc == ESCAPE_UNSET) |
03ff9c70 | 2563 | count = udev_replace_chars(buf, /* allow = */ "/ "); |
25de7aa7 | 2564 | else if (event->esc == ESCAPE_REPLACE) |
03ff9c70 | 2565 | count = udev_replace_chars(buf, /* allow = */ "/"); |
25de7aa7 YW |
2566 | else |
2567 | count = 0; | |
2568 | if (count > 0) | |
c06ab041 YW |
2569 | log_event_debug(dev, token, |
2570 | "Replaced %zu character(s) from result of SYMLINK=\"%s\"", | |
2571 | count, token->value); | |
25de7aa7 | 2572 | |
733b7bfd | 2573 | for (const char *p = buf;;) { |
2c5f119c | 2574 | _cleanup_free_ char *path = NULL; |
25de7aa7 | 2575 | |
2c5f119c | 2576 | r = extract_first_word(&p, &path, NULL, EXTRACT_RETAIN_ESCAPE); |
733b7bfd YW |
2577 | if (r == -ENOMEM) |
2578 | return log_oom(); | |
2579 | if (r < 0) { | |
2580 | log_warning_errno(r, "Failed to extract first path in SYMLINK=, ignoring: %m"); | |
2581 | break; | |
25de7aa7 | 2582 | } |
733b7bfd YW |
2583 | if (r == 0) |
2584 | break; | |
25de7aa7 | 2585 | |
aeefa4d2 | 2586 | if (token->op == OP_REMOVE) { |
2c5f119c YW |
2587 | r = device_remove_devlink(dev, path); |
2588 | if (r == -ENOMEM) | |
2589 | return log_oom(); | |
2590 | if (r < 0) | |
2591 | log_event_warning_errno(dev, token, r, "Failed to remove devlink '%s', ignoring: %m", path); | |
2592 | else if (r > 0) | |
2593 | log_event_debug(dev, token, "Dropped SYMLINK '%s'", path); | |
aeefa4d2 | 2594 | } else { |
f17af9c9 | 2595 | r = device_add_devlink(dev, path); |
2c5f119c YW |
2596 | if (r == -ENOMEM) |
2597 | return log_oom(); | |
aeefa4d2 | 2598 | if (r < 0) |
2c5f119c YW |
2599 | log_event_warning_errno(dev, token, r, "Failed to add devlink '%s', ignoring: %m", path); |
2600 | else if (r > 0) | |
2601 | log_event_debug(dev, token, "Added SYMLINK '%s'", path); | |
aeefa4d2 | 2602 | } |
25de7aa7 YW |
2603 | } |
2604 | break; | |
2605 | } | |
2606 | case TK_A_ATTR: { | |
7dc846f9 YW |
2607 | char buf[UDEV_PATH_SIZE], value[UDEV_NAME_SIZE]; |
2608 | const char *val, *key_name = token->data; | |
f6caab89 | 2609 | bool truncated; |
25de7aa7 | 2610 | |
1223227f | 2611 | if (udev_resolve_subsys_kernel(key_name, buf, sizeof(buf), false) < 0 && |
f6caab89 YW |
2612 | sd_device_get_syspath(dev, &val) >= 0) { |
2613 | strscpyl_full(buf, sizeof(buf), &truncated, val, "/", key_name, NULL); | |
2614 | if (truncated) { | |
c06ab041 YW |
2615 | log_event_warning(dev, token, |
2616 | "The path to the attribute '%s/%s' is too long, refusing to set the attribute.", | |
2617 | val, key_name); | |
f6caab89 YW |
2618 | break; |
2619 | } | |
2620 | } | |
25de7aa7 YW |
2621 | |
2622 | r = attr_subst_subdir(buf); | |
2623 | if (r < 0) { | |
c06ab041 | 2624 | log_event_error_errno(dev, token, r, "Could not find file matches '%s', ignoring: %m", buf); |
f4cf2e5b KS |
2625 | break; |
2626 | } | |
f6caab89 YW |
2627 | (void) udev_event_apply_format(event, token->value, value, sizeof(value), false, &truncated); |
2628 | if (truncated) { | |
e5a34948 | 2629 | log_event_truncated(dev, token, "attribute value", token->value, "ATTR", /* is_match = */ false); |
f6caab89 YW |
2630 | break; |
2631 | } | |
6cdc62aa | 2632 | |
c06ab041 | 2633 | log_event_debug(dev, token, "ATTR '%s' writing '%s'", buf, value); |
6fb61918 YW |
2634 | r = write_string_file(buf, value, |
2635 | WRITE_STRING_FILE_VERIFY_ON_FAILURE | | |
2636 | WRITE_STRING_FILE_DISABLE_BUFFER | | |
2637 | WRITE_STRING_FILE_AVOID_NEWLINE | | |
2638 | WRITE_STRING_FILE_VERIFY_IGNORE_NEWLINE); | |
25de7aa7 | 2639 | if (r < 0) |
c06ab041 | 2640 | log_event_error_errno(dev, token, r, "Failed to write ATTR{%s}, ignoring: %m", buf); |
25de7aa7 YW |
2641 | break; |
2642 | } | |
2643 | case TK_A_SYSCTL: { | |
7dc846f9 | 2644 | char buf[UDEV_PATH_SIZE], value[UDEV_NAME_SIZE]; |
f6caab89 YW |
2645 | bool truncated; |
2646 | ||
2647 | (void) udev_event_apply_format(event, token->data, buf, sizeof(buf), false, &truncated); | |
2648 | if (truncated) { | |
e5a34948 | 2649 | log_event_truncated(dev, token, "sysctl entry name", token->data, "SYSCTL", /* is_match = */ false); |
f6caab89 YW |
2650 | break; |
2651 | } | |
2652 | ||
2653 | (void) udev_event_apply_format(event, token->value, value, sizeof(value), false, &truncated); | |
2654 | if (truncated) { | |
e5a34948 YW |
2655 | _cleanup_free_ char *key_with_name = strjoin("SYSCTL{", buf, "}"); |
2656 | log_event_truncated(dev, token, "sysctl value", token->value, | |
2657 | key_with_name ?: "SYSCTL", /* is_match = */ false); | |
f6caab89 YW |
2658 | break; |
2659 | } | |
25de7aa7 | 2660 | |
25de7aa7 | 2661 | sysctl_normalize(buf); |
c06ab041 | 2662 | log_event_debug(dev, token, "SYSCTL '%s' writing '%s'", buf, value); |
25de7aa7 YW |
2663 | r = sysctl_write(buf, value); |
2664 | if (r < 0) | |
c06ab041 | 2665 | log_event_error_errno(dev, token, r, "Failed to write SYSCTL{%s}='%s', ignoring: %m", buf, value); |
25de7aa7 YW |
2666 | break; |
2667 | } | |
2668 | case TK_A_RUN_BUILTIN: | |
2669 | case TK_A_RUN_PROGRAM: { | |
2670 | _cleanup_free_ char *cmd = NULL; | |
c3613ee5 | 2671 | char buf[UDEV_LINE_SIZE]; |
f6caab89 | 2672 | bool truncated; |
29448498 | 2673 | |
25de7aa7 YW |
2674 | if (event->run_final) |
2675 | break; | |
2676 | if (token->op == OP_ASSIGN_FINAL) | |
2677 | event->run_final = true; | |
29448498 | 2678 | |
25de7aa7 YW |
2679 | if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL)) |
2680 | ordered_hashmap_clear_free_key(event->run_list); | |
29448498 | 2681 | |
f6caab89 YW |
2682 | (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false, &truncated); |
2683 | if (truncated) { | |
e5a34948 YW |
2684 | log_event_truncated(dev, token, "command", token->value, |
2685 | token->type == TK_A_RUN_BUILTIN ? "RUN{builtin}" : "RUN{program}", | |
2686 | /* is_match = */ false); | |
f6caab89 YW |
2687 | break; |
2688 | } | |
1448820a YW |
2689 | |
2690 | cmd = strdup(buf); | |
25de7aa7 YW |
2691 | if (!cmd) |
2692 | return log_oom(); | |
29448498 | 2693 | |
875038d5 SS |
2694 | r = ordered_hashmap_ensure_put(&event->run_list, NULL, cmd, token->data); |
2695 | if (r == -ENOMEM) | |
25de7aa7 | 2696 | return log_oom(); |
875038d5 | 2697 | if (r < 0) |
c06ab041 | 2698 | return log_event_error_errno(dev, token, r, "Failed to store command '%s': %m", cmd); |
83cd6b75 | 2699 | |
25de7aa7 YW |
2700 | TAKE_PTR(cmd); |
2701 | ||
c06ab041 | 2702 | log_event_debug(dev, token, "RUN '%s'", token->value); |
25de7aa7 YW |
2703 | break; |
2704 | } | |
2705 | case TK_A_OPTIONS_STATIC_NODE: | |
2706 | /* do nothing for events. */ | |
2707 | break; | |
2708 | default: | |
04499a70 | 2709 | assert_not_reached(); |
25de7aa7 YW |
2710 | } |
2711 | ||
2712 | return true; | |
2713 | } | |
2714 | ||
2715 | static bool token_is_for_parents(UdevRuleToken *token) { | |
2716 | return token->type >= TK_M_PARENTS_KERNEL && token->type <= TK_M_PARENTS_TAG; | |
2717 | } | |
2718 | ||
2719 | static int udev_rule_apply_parent_token_to_event( | |
c06ab041 | 2720 | UdevRuleToken *head_token, |
e2099267 MS |
2721 | UdevEvent *event, |
2722 | int timeout_signal) { | |
25de7aa7 | 2723 | |
25de7aa7 YW |
2724 | int r; |
2725 | ||
c06ab041 | 2726 | assert(head_token); |
eba782d5 YW |
2727 | assert(event); |
2728 | ||
eba782d5 YW |
2729 | event->dev_parent = ASSERT_PTR(event->dev); |
2730 | ||
25de7aa7 | 2731 | for (;;) { |
c06ab041 | 2732 | LIST_FOREACH(tokens, token, head_token) { |
03677889 | 2733 | if (!token_is_for_parents(token)) |
25de7aa7 | 2734 | return true; /* All parent tokens match. */ |
03677889 | 2735 | |
c06ab041 | 2736 | r = udev_rule_apply_token_to_event(token, event->dev_parent, event, 0, timeout_signal, NULL); |
25de7aa7 YW |
2737 | if (r < 0) |
2738 | return r; | |
2739 | if (r == 0) | |
912541b0 | 2740 | break; |
25de7aa7 | 2741 | } |
eba782d5 YW |
2742 | if (r > 0) |
2743 | /* All parent tokens match, and no more token (except for GOTO) in the line. */ | |
25de7aa7 YW |
2744 | return true; |
2745 | ||
2746 | if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) { | |
2747 | event->dev_parent = NULL; | |
2748 | return false; | |
2749 | } | |
2750 | } | |
2751 | } | |
2752 | ||
2753 | static int udev_rule_apply_line_to_event( | |
c06ab041 | 2754 | UdevRuleLine *line, |
25de7aa7 YW |
2755 | UdevEvent *event, |
2756 | usec_t timeout_usec, | |
e2099267 | 2757 | int timeout_signal, |
25de7aa7 YW |
2758 | Hashmap *properties_list, |
2759 | UdevRuleLine **next_line) { | |
2760 | ||
25de7aa7 | 2761 | UdevRuleLineType mask = LINE_HAS_GOTO | LINE_UPDATE_SOMETHING; |
25de7aa7 | 2762 | bool parents_done = false; |
a1130022 | 2763 | sd_device_action_t action; |
25de7aa7 | 2764 | int r; |
912541b0 | 2765 | |
c06ab041 YW |
2766 | assert(line); |
2767 | assert(event); | |
2768 | assert(next_line); | |
2769 | ||
a1130022 | 2770 | r = sd_device_get_action(event->dev, &action); |
25de7aa7 YW |
2771 | if (r < 0) |
2772 | return r; | |
2773 | ||
a1130022 | 2774 | if (action != SD_DEVICE_REMOVE) { |
25de7aa7 YW |
2775 | if (sd_device_get_devnum(event->dev, NULL) >= 0) |
2776 | mask |= LINE_HAS_DEVLINK; | |
2777 | ||
2778 | if (sd_device_get_ifindex(event->dev, NULL) >= 0) | |
2779 | mask |= LINE_HAS_NAME; | |
2780 | } | |
2781 | ||
2782 | if ((line->type & mask) == 0) | |
2783 | return 0; | |
2784 | ||
2785 | event->esc = ESCAPE_UNSET; | |
b428efa5 MS |
2786 | |
2787 | DEVICE_TRACE_POINT(rules_apply_line, event->dev, line->rule_file->filename, line->line_number); | |
2788 | ||
80a226b2 | 2789 | LIST_FOREACH(tokens, token, line->tokens) { |
25de7aa7 YW |
2790 | if (token_is_for_parents(token)) { |
2791 | if (parents_done) | |
2792 | continue; | |
2793 | ||
c06ab041 | 2794 | r = udev_rule_apply_parent_token_to_event(token, event, timeout_signal); |
25de7aa7 YW |
2795 | if (r <= 0) |
2796 | return r; | |
2797 | ||
2798 | parents_done = true; | |
2799 | continue; | |
912541b0 KS |
2800 | } |
2801 | ||
c06ab041 | 2802 | r = udev_rule_apply_token_to_event(token, event->dev, event, timeout_usec, timeout_signal, properties_list); |
25de7aa7 YW |
2803 | if (r <= 0) |
2804 | return r; | |
912541b0 | 2805 | } |
d838e145 | 2806 | |
25de7aa7 | 2807 | if (line->goto_line) |
c06ab041 | 2808 | *next_line = line->goto_line; /* update next_line only when the line has GOTO token. */ |
25de7aa7 | 2809 | |
d838e145 | 2810 | return 0; |
6880b25d | 2811 | } |
761dfddc | 2812 | |
25de7aa7 YW |
2813 | int udev_rules_apply_to_event( |
2814 | UdevRules *rules, | |
2815 | UdevEvent *event, | |
2816 | usec_t timeout_usec, | |
e2099267 | 2817 | int timeout_signal, |
25de7aa7 YW |
2818 | Hashmap *properties_list) { |
2819 | ||
25de7aa7 YW |
2820 | int r; |
2821 | ||
2822 | assert(rules); | |
2823 | assert(event); | |
2824 | ||
c06ab041 | 2825 | LIST_FOREACH(rule_files, file, rules->rule_files) |
80a226b2 | 2826 | LIST_FOREACH_WITH_NEXT(rule_lines, line, next_line, file->rule_lines) { |
c06ab041 | 2827 | r = udev_rule_apply_line_to_event(line, event, timeout_usec, timeout_signal, properties_list, &next_line); |
25de7aa7 YW |
2828 | if (r < 0) |
2829 | return r; | |
2830 | } | |
25de7aa7 YW |
2831 | |
2832 | return 0; | |
2833 | } | |
2834 | ||
25de7aa7 | 2835 | static int udev_rule_line_apply_static_dev_perms(UdevRuleLine *rule_line) { |
f4f6f2c7 | 2836 | _cleanup_strv_free_ char **tags = NULL; |
25de7aa7 YW |
2837 | uid_t uid = UID_INVALID; |
2838 | gid_t gid = GID_INVALID; | |
2839 | mode_t mode = MODE_INVALID; | |
2840 | int r; | |
d6f116a7 | 2841 | |
25de7aa7 | 2842 | assert(rule_line); |
912541b0 | 2843 | |
25de7aa7 YW |
2844 | if (!FLAGS_SET(rule_line->type, LINE_HAS_STATIC_NODE)) |
2845 | return 0; | |
912541b0 | 2846 | |
25de7aa7 YW |
2847 | LIST_FOREACH(tokens, token, rule_line->tokens) |
2848 | if (token->type == TK_A_OWNER_ID) | |
2849 | uid = PTR_TO_UID(token->data); | |
2850 | else if (token->type == TK_A_GROUP_ID) | |
2851 | gid = PTR_TO_GID(token->data); | |
2852 | else if (token->type == TK_A_MODE_ID) | |
2853 | mode = PTR_TO_MODE(token->data); | |
2854 | else if (token->type == TK_A_TAG) { | |
2855 | r = strv_extend(&tags, token->value); | |
2856 | if (r < 0) | |
2857 | return log_oom(); | |
2858 | } else if (token->type == TK_A_OPTIONS_STATIC_NODE) { | |
26dd37f6 | 2859 | r = static_node_apply_permissions(token->value, mode, uid, gid, tags); |
25de7aa7 YW |
2860 | if (r < 0) |
2861 | return r; | |
912541b0 KS |
2862 | } |
2863 | ||
25de7aa7 YW |
2864 | return 0; |
2865 | } | |
2866 | ||
2867 | int udev_rules_apply_static_dev_perms(UdevRules *rules) { | |
25de7aa7 YW |
2868 | int r; |
2869 | ||
2870 | assert(rules); | |
84b6ad70 | 2871 | |
25de7aa7 YW |
2872 | LIST_FOREACH(rule_files, file, rules->rule_files) |
2873 | LIST_FOREACH(rule_lines, line, file->rule_lines) { | |
2874 | r = udev_rule_line_apply_static_dev_perms(line); | |
2875 | if (r < 0) | |
2876 | return r; | |
84b6ad70 | 2877 | } |
84b6ad70 | 2878 | |
fdd21be6 | 2879 | return 0; |
761dfddc | 2880 | } |