2 * Copyright (C) 2003-2010 Kay Sievers <kay.sievers@vrfy.org>
3 * Copyright (C) 2008 Alan Jenkins <alan-jenkins@tuffmail.co.uk>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
35 #define PREALLOC_TOKEN 2048
36 #define PREALLOC_STRBUF 32 * 1024
37 #define PREALLOC_TRIE 256
40 unsigned int name_off;
48 /* this node's first child */
49 unsigned int child_idx;
50 /* the next child of our parent node's child list */
51 unsigned int next_child_idx;
52 /* this node's last child (shortcut for append) */
53 unsigned int last_child_idx;
54 unsigned int value_off;
55 unsigned short value_len;
63 /* every key in the rules file becomes a token */
65 unsigned int token_cur;
66 unsigned int token_max;
68 /* all key strings are copied to a single string buffer */
72 unsigned int buf_count;
74 /* during rule parsing, strings are indexed to find duplicates */
75 struct trie_node *trie_nodes;
76 unsigned int trie_nodes_cur;
77 unsigned int trie_nodes_max;
79 /* during rule parsing, uid/gid lookup results are cached */
81 unsigned int uids_cur;
82 unsigned int uids_max;
84 unsigned int gids_cur;
85 unsigned int gids_max;
88 /* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */
101 enum string_glob_type {
103 GL_PLAIN, /* no special chars */
104 GL_GLOB, /* shell globs ?,*,[] */
105 GL_SPLIT, /* multi-value A|B */
106 GL_SPLIT_GLOB, /* multi-value with glob A*|B* */
107 GL_SOMETHING, /* commonly used "?*" */
110 enum string_subst_type {
117 /* tokens of a rule are sorted/handled in this order */
122 TK_M_ACTION, /* val */
123 TK_M_DEVPATH, /* val */
124 TK_M_KERNEL, /* val */
125 TK_M_DEVLINK, /* val */
127 TK_M_ENV, /* val, attr */
129 TK_M_SUBSYSTEM, /* val */
130 TK_M_DRIVER, /* val */
131 TK_M_WAITFOR, /* val */
132 TK_M_ATTR, /* val, attr */
135 TK_M_KERNELS, /* val */
136 TK_M_SUBSYSTEMS, /* val */
137 TK_M_DRIVERS, /* val */
138 TK_M_ATTRS, /* val, attr */
141 TK_M_TEST, /* val, mode_t */
142 TK_M_PROGRAM, /* val */
143 TK_M_IMPORT_FILE, /* val */
144 TK_M_IMPORT_PROG, /* val */
145 TK_M_IMPORT_DB, /* val */
146 TK_M_IMPORT_PARENT, /* val */
147 TK_M_RESULT, /* val */
150 TK_A_STRING_ESCAPE_NONE,
151 TK_A_STRING_ESCAPE_REPLACE,
152 TK_A_INOTIFY_WATCH, /* int */
153 TK_A_DEVLINK_PRIO, /* int */
154 TK_A_OWNER, /* val */
155 TK_A_GROUP, /* val */
157 TK_A_OWNER_ID, /* uid_t */
158 TK_A_GROUP_ID, /* gid_t */
159 TK_A_MODE_ID, /* mode_t */
160 TK_A_STATIC_NODE, /* val */
161 TK_A_ENV, /* val, attr */
164 TK_A_DEVLINK, /* val */
165 TK_A_EVENT_TIMEOUT, /* int */
166 TK_A_ATTR, /* val, attr */
167 TK_A_RUN, /* val, bool */
168 TK_A_GOTO, /* size_t */
173 /* we try to pack stuff in a way that we take only 12 bytes per token */
176 unsigned char type; /* same in rule and key */
178 enum token_type type:8;
180 bool has_static_node:1;
181 unsigned int unused:6;
182 unsigned short token_count;
183 unsigned int label_off;
184 unsigned short filename_off;
185 unsigned short filename_line;
188 enum token_type type:8;
189 enum operation_type op:8;
190 enum string_glob_type glob:8;
191 enum string_subst_type subst:4;
192 enum string_subst_type attrsubst:4;
193 unsigned int value_off;
195 unsigned int attr_off;
198 unsigned int rule_goto;
212 struct udev_rules *rules;
214 struct token token[MAX_TK];
215 unsigned int token_cur;
219 static const char *operation_str(enum operation_type type)
221 static const char *operation_strs[] = {
222 [OP_UNSET] = "UNSET",
223 [OP_MATCH] = "match",
224 [OP_NOMATCH] = "nomatch",
225 [OP_MATCH_MAX] = "MATCH_MAX",
228 [OP_ASSIGN] = "assign",
229 [OP_ASSIGN_FINAL] = "assign-final",
232 return operation_strs[type];
235 static const char *string_glob_str(enum string_glob_type type)
237 static const char *string_glob_strs[] = {
238 [GL_UNSET] = "UNSET",
239 [GL_PLAIN] = "plain",
241 [GL_SPLIT] = "split",
242 [GL_SPLIT_GLOB] = "split-glob",
243 [GL_SOMETHING] = "split-glob",
246 return string_glob_strs[type];
249 static const char *token_str(enum token_type type)
251 static const char *token_strs[] = {
252 [TK_UNSET] = "UNSET",
255 [TK_M_ACTION] = "M ACTION",
256 [TK_M_DEVPATH] = "M DEVPATH",
257 [TK_M_KERNEL] = "M KERNEL",
258 [TK_M_DEVLINK] = "M DEVLINK",
259 [TK_M_NAME] = "M NAME",
260 [TK_M_ENV] = "M ENV",
261 [TK_M_TAG] = "M TAG",
262 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
263 [TK_M_DRIVER] = "M DRIVER",
264 [TK_M_WAITFOR] = "M WAITFOR",
265 [TK_M_ATTR] = "M ATTR",
267 [TK_M_PARENTS_MIN] = "M PARENTS_MIN",
268 [TK_M_KERNELS] = "M KERNELS",
269 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
270 [TK_M_DRIVERS] = "M DRIVERS",
271 [TK_M_ATTRS] = "M ATTRS",
272 [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
274 [TK_M_TEST] = "M TEST",
275 [TK_M_PROGRAM] = "M PROGRAM",
276 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
277 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
278 [TK_M_IMPORT_DB] = "M IMPORT_DB",
279 [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT",
280 [TK_M_RESULT] = "M RESULT",
281 [TK_M_MAX] = "M MAX",
283 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
284 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
285 [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH",
286 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
287 [TK_A_OWNER] = "A OWNER",
288 [TK_A_GROUP] = "A GROUP",
289 [TK_A_MODE] = "A MODE",
290 [TK_A_OWNER_ID] = "A OWNER_ID",
291 [TK_A_GROUP_ID] = "A GROUP_ID",
292 [TK_A_STATIC_NODE] = "A STATIC_NODE",
293 [TK_A_MODE_ID] = "A MODE_ID",
294 [TK_A_ENV] = "A ENV",
295 [TK_A_TAG] = "A ENV",
296 [TK_A_NAME] = "A NAME",
297 [TK_A_DEVLINK] = "A DEVLINK",
298 [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
299 [TK_A_ATTR] = "A ATTR",
300 [TK_A_RUN] = "A RUN",
301 [TK_A_GOTO] = "A GOTO",
306 return token_strs[type];
309 static void dump_token(struct udev_rules *rules, struct token *token)
311 enum token_type type = token->type;
312 enum operation_type op = token->key.op;
313 enum string_glob_type glob = token->key.glob;
314 const char *value = &rules->buf[token->key.value_off];
315 const char *attr = &rules->buf[token->key.attr_off];
320 const char *tks_ptr = (char *)rules->tokens;
321 const char *tk_ptr = (char *)token;
322 unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token);
324 dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s', flags: 0x%02x\n",
325 &rules->buf[token->rule.filename_off], token->rule.filename_line,
326 idx, token->rule.token_count,
327 &rules->buf[token->rule.label_off],
340 case TK_M_SUBSYSTEMS:
343 case TK_M_IMPORT_FILE:
344 case TK_M_IMPORT_PROG:
346 case TK_M_IMPORT_PARENT:
354 dbg(rules->udev, "%s %s '%s'(%s)\n",
355 token_str(type), operation_str(op), value, string_glob_str(glob));
362 dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
363 token_str(type), operation_str(op), attr, value, string_glob_str(glob));
367 dbg(rules->udev, "%s %s '%s'\n", token_str(type), operation_str(op), value);
369 case TK_A_STRING_ESCAPE_NONE:
370 case TK_A_STRING_ESCAPE_REPLACE:
371 dbg(rules->udev, "%s\n", token_str(type));
374 dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
375 token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
377 case TK_A_INOTIFY_WATCH:
378 dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch);
380 case TK_A_DEVLINK_PRIO:
381 dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio);
384 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid);
387 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid);
390 dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode);
392 case TK_A_STATIC_NODE:
393 dbg(rules->udev, "%s '%s'\n", token_str(type), value);
395 case TK_A_EVENT_TIMEOUT:
396 dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout);
399 dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto);
402 dbg(rules->udev, "* %s\n", token_str(type));
404 case TK_M_PARENTS_MIN:
405 case TK_M_PARENTS_MAX:
408 dbg(rules->udev, "unknown type %u\n", type);
413 static void dump_rules(struct udev_rules *rules)
417 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
419 rules->token_cur * sizeof(struct token),
422 for(i = 0; i < rules->token_cur; i++)
423 dump_token(rules, &rules->tokens[i]);
426 static inline const char *operation_str(enum operation_type type) { return NULL; }
427 static inline const char *token_str(enum token_type type) { return NULL; }
428 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
429 static inline void dump_rules(struct udev_rules *rules) {}
430 #endif /* ENABLE_DEBUG */
432 static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes)
436 /* grow buffer if needed */
437 if (rules->buf_cur + bytes+1 >= rules->buf_max) {
441 /* double the buffer size */
442 add = rules->buf_max;
446 buf = realloc(rules->buf, rules->buf_max + add);
449 dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
451 rules->buf_max += add;
453 off = rules->buf_cur;
454 memcpy(&rules->buf[rules->buf_cur], str, bytes);
455 rules->buf_cur += bytes;
460 static int add_string(struct udev_rules *rules, const char *str)
462 unsigned int node_idx;
463 struct trie_node *new_node;
464 unsigned int new_node_idx;
469 struct trie_node *parent;
471 /* walk trie, start from last character of str to find matching tails */
475 for (depth = 0; depth <= len; depth++) {
476 struct trie_node *node;
477 unsigned int child_idx;
479 node = &rules->trie_nodes[node_idx];
480 off = node->value_off + node->value_len - len;
482 /* match against current node */
483 if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0))
486 /* lookup child node */
487 key = str[len - 1 - depth];
488 child_idx = node->child_idx;
489 while (child_idx > 0) {
490 struct trie_node *child;
492 child = &rules->trie_nodes[child_idx];
493 if (child->key == key)
495 child_idx = child->next_child_idx;
499 node_idx = child_idx;
502 /* string not found, add it */
503 off = add_new_string(rules, str, len + 1);
505 /* grow trie nodes if needed */
506 if (rules->trie_nodes_cur >= rules->trie_nodes_max) {
507 struct trie_node *nodes;
510 /* double the buffer size */
511 add = rules->trie_nodes_max;
515 nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node));
518 dbg(rules->udev, "extend trie nodes from %u to %u\n",
519 rules->trie_nodes_max, rules->trie_nodes_max + add);
520 rules->trie_nodes = nodes;
521 rules->trie_nodes_max += add;
525 new_node_idx = rules->trie_nodes_cur;
526 rules->trie_nodes_cur++;
527 new_node = &rules->trie_nodes[new_node_idx];
528 memset(new_node, 0x00, sizeof(struct trie_node));
529 new_node->value_off = off;
530 new_node->value_len = len;
533 /* join the parent's child list */
534 parent = &rules->trie_nodes[node_idx];
535 if (parent->child_idx == 0) {
536 parent->child_idx = new_node_idx;
538 struct trie_node *last_child;
540 last_child = &rules->trie_nodes[parent->last_child_idx];
541 last_child->next_child_idx = new_node_idx;
543 parent->last_child_idx = new_node_idx;
547 static int add_token(struct udev_rules *rules, struct token *token)
549 /* grow buffer if needed */
550 if (rules->token_cur+1 >= rules->token_max) {
551 struct token *tokens;
554 /* double the buffer size */
555 add = rules->token_max;
559 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
562 dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
563 rules->tokens = tokens;
564 rules->token_max += add;
566 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
571 static uid_t add_uid(struct udev_rules *rules, const char *owner)
577 /* lookup, if we know it already */
578 for (i = 0; i < rules->uids_cur; i++) {
579 off = rules->uids[i].name_off;
580 if (strcmp(&rules->buf[off], owner) == 0) {
581 uid = rules->uids[i].uid;
582 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
586 uid = util_lookup_user(rules->udev, owner);
588 /* grow buffer if needed */
589 if (rules->uids_cur+1 >= rules->uids_max) {
590 struct uid_gid *uids;
593 /* double the buffer size */
594 add = rules->uids_max;
598 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
601 dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
603 rules->uids_max += add;
605 rules->uids[rules->uids_cur].uid = uid;
606 off = add_string(rules, owner);
609 rules->uids[rules->uids_cur].name_off = off;
614 static gid_t add_gid(struct udev_rules *rules, const char *group)
620 /* lookup, if we know it already */
621 for (i = 0; i < rules->gids_cur; i++) {
622 off = rules->gids[i].name_off;
623 if (strcmp(&rules->buf[off], group) == 0) {
624 gid = rules->gids[i].gid;
625 dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
629 gid = util_lookup_group(rules->udev, group);
631 /* grow buffer if needed */
632 if (rules->gids_cur+1 >= rules->gids_max) {
633 struct uid_gid *gids;
636 /* double the buffer size */
637 add = rules->gids_max;
641 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
644 dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
646 rules->gids_max += add;
648 rules->gids[rules->gids_cur].gid = gid;
649 off = add_string(rules, group);
652 rules->gids[rules->gids_cur].name_off = off;
657 static int import_property_from_string(struct udev_device *dev, char *line)
659 struct udev *udev = udev_device_get_udev(dev);
666 while (isspace(key[0]))
669 /* comment or empty line */
670 if (key[0] == '#' || key[0] == '\0')
673 /* split key/value */
674 val = strchr(key, '=');
681 while (isspace(val[0]))
688 while (isspace(key[len-1]))
692 /* terminate value */
696 while (isspace(val[len-1]))
704 if (val[0] == '"' || val[0] == '\'') {
705 if (val[len-1] != val[0]) {
706 info(udev, "inconsistent quoting: '%s', skip\n", line);
713 dbg(udev, "adding '%s'='%s'\n", key, val);
715 /* handle device, renamed by external tool, returning new path */
716 if (strcmp(key, "DEVPATH") == 0) {
717 char syspath[UTIL_PATH_SIZE];
719 info(udev, "updating devpath from '%s' to '%s'\n",
720 udev_device_get_devpath(dev), val);
721 util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL);
722 udev_device_set_syspath(dev, syspath);
724 struct udev_list_entry *entry;
726 entry = udev_device_add_property(dev, key, val);
727 /* store in db, skip private keys */
729 udev_list_entry_set_flags(entry, 1);
734 static int import_file_into_properties(struct udev_device *dev, const char *filename)
737 char line[UTIL_LINE_SIZE];
739 f = fopen(filename, "r");
742 while (fgets(line, sizeof(line), f) != NULL)
743 import_property_from_string(dev, line);
748 static int import_program_into_properties(struct udev_device *dev, const char *program)
750 struct udev *udev = udev_device_get_udev(dev);
756 envp = udev_device_get_properties_envp(dev);
757 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen, NULL, false) != 0)
761 while (line != NULL) {
764 pos = strchr(line, '\n');
769 import_property_from_string(dev, line);
775 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
777 struct udev *udev = udev_device_get_udev(dev);
778 struct udev_device *dev_parent;
779 struct udev_list_entry *list_entry;
781 dev_parent = udev_device_get_parent(dev);
782 if (dev_parent == NULL)
785 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
786 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
787 const char *key = udev_list_entry_get_name(list_entry);
788 const char *val = udev_list_entry_get_value(list_entry);
790 if (fnmatch(filter, key, 0) == 0) {
791 struct udev_list_entry *entry;
793 dbg(udev, "import key '%s=%s'\n", key, val);
794 entry = udev_device_add_property(dev, key, val);
795 /* store in db, skip private keys */
797 udev_list_entry_set_flags(entry, 1);
803 #define WAIT_LOOP_PER_SECOND 50
804 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
806 struct udev *udev = udev_device_get_udev(dev);
807 char filepath[UTIL_PATH_SIZE];
808 char devicepath[UTIL_PATH_SIZE];
810 int loop = timeout * WAIT_LOOP_PER_SECOND;
812 /* a relative path is a device attribute */
813 devicepath[0] = '\0';
814 if (file[0] != '/') {
815 util_strscpyl(devicepath, sizeof(devicepath),
816 udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL);
817 util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
821 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
823 const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND };
826 if (stat(file, &stats) == 0) {
827 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
830 /* make sure, the device did not disappear in the meantime */
831 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
832 info(udev, "device disappeared while waiting for '%s'\n", file);
835 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
836 nanosleep(&duration, NULL);
838 info(udev, "waiting for '%s' failed\n", file);
842 static int attr_subst_subdir(char *attr, size_t len)
846 if (strstr(attr, "/*/")) {
848 char dirname[UTIL_PATH_SIZE];
852 util_strscpy(dirname, sizeof(dirname), attr);
853 pos = strstr(dirname, "/*/");
858 dir = opendir(dirname);
862 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
865 if (dent->d_name[0] == '.')
867 util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
868 if (stat(attr, &stats) == 0) {
880 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
886 if (linepos == NULL || linepos[0] == '\0')
889 /* skip whitespace */
890 while (isspace(linepos[0]) || linepos[0] == ',')
894 if (linepos[0] == '\0')
900 if (linepos[0] == '\0')
902 if (isspace(linepos[0]))
904 if (linepos[0] == '=')
906 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
907 if (linepos[1] == '=')
911 /* remember end of key */
914 /* skip whitespace after key */
915 while (isspace(linepos[0]))
917 if (linepos[0] == '\0')
920 /* get operation type */
921 if (linepos[0] == '=' && linepos[1] == '=') {
924 } else if (linepos[0] == '!' && linepos[1] == '=') {
927 } else if (linepos[0] == '+' && linepos[1] == '=') {
930 } else if (linepos[0] == '=') {
933 } else if (linepos[0] == ':' && linepos[1] == '=') {
934 *op = OP_ASSIGN_FINAL;
942 /* skip whitespace after operator */
943 while (isspace(linepos[0]))
945 if (linepos[0] == '\0')
949 if (linepos[0] == '"')
956 temp = strchr(linepos, '"');
961 dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value);
963 /* move line to next key */
968 /* extract possible KEY{attr} */
969 static char *get_key_attribute(struct udev *udev, char *str)
974 attr = strchr(str, '{');
977 pos = strchr(attr, '}');
979 err(udev, "missing closing brace for format\n");
983 dbg(udev, "attribute='%s'\n", attr);
989 static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
990 enum operation_type op,
991 const char *value, const void *data)
993 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
994 const char *attr = NULL;
996 memset(token, 0x00, sizeof(struct token));
1002 case TK_M_SUBSYSTEM:
1008 case TK_M_SUBSYSTEMS:
1011 case TK_M_IMPORT_FILE:
1012 case TK_M_IMPORT_PROG:
1013 case TK_M_IMPORT_DB:
1014 case TK_M_IMPORT_PARENT:
1023 token->key.value_off = add_string(rule_tmp->rules, value);
1031 token->key.value_off = add_string(rule_tmp->rules, value);
1032 token->key.attr_off = add_string(rule_tmp->rules, attr);
1035 token->key.value_off = add_string(rule_tmp->rules, value);
1036 token->key.devlink_unique = *(int *)data;
1039 token->key.value_off = add_string(rule_tmp->rules, value);
1041 token->key.mode = *(mode_t *)data;
1043 case TK_A_STRING_ESCAPE_NONE:
1044 case TK_A_STRING_ESCAPE_REPLACE:
1047 token->key.value_off = add_string(rule_tmp->rules, value);
1048 token->key.fail_on_error = *(int *)data;
1050 case TK_A_INOTIFY_WATCH:
1051 case TK_A_DEVLINK_PRIO:
1052 token->key.devlink_prio = *(int *)data;
1055 token->key.uid = *(uid_t *)data;
1058 token->key.gid = *(gid_t *)data;
1061 token->key.mode = *(mode_t *)data;
1063 case TK_A_STATIC_NODE:
1064 token->key.value_off = add_string(rule_tmp->rules, value);
1066 case TK_A_EVENT_TIMEOUT:
1067 token->key.event_timeout = *(int *)data;
1070 case TK_M_PARENTS_MIN:
1071 case TK_M_PARENTS_MAX:
1075 err(rule_tmp->rules->udev, "wrong type %u\n", type);
1079 if (value != NULL && type < TK_M_MAX) {
1080 /* check if we need to split or call fnmatch() while matching rules */
1081 enum string_glob_type glob;
1085 has_split = (strchr(value, '|') != NULL);
1086 has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL);
1087 if (has_split && has_glob) {
1088 glob = GL_SPLIT_GLOB;
1089 } else if (has_split) {
1091 } else if (has_glob) {
1092 if (strcmp(value, "?*") == 0)
1093 glob = GL_SOMETHING;
1099 token->key.glob = glob;
1102 if (value != NULL && type > TK_M_MAX) {
1103 /* check if assigned value has substitution chars */
1104 if (value[0] == '[')
1105 token->key.subst = SB_SUBSYS;
1106 else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
1107 token->key.subst = SB_FORMAT;
1109 token->key.subst = SB_NONE;
1113 /* check if property/attribut name has substitution chars */
1115 token->key.attrsubst = SB_SUBSYS;
1116 else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL)
1117 token->key.attrsubst = SB_FORMAT;
1119 token->key.attrsubst = SB_NONE;
1122 token->key.type = type;
1124 rule_tmp->token_cur++;
1125 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
1126 err(rule_tmp->rules->udev, "temporary rule array too small\n");
1132 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
1135 unsigned int start = 0;
1136 unsigned int end = rule_tmp->token_cur;
1138 for (i = 0; i < rule_tmp->token_cur; i++) {
1139 enum token_type next_val = TK_UNSET;
1140 unsigned int next_idx = 0;
1143 /* find smallest value */
1144 for (j = start; j < end; j++) {
1145 if (rule_tmp->token[j].type == TK_UNSET)
1147 if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
1148 next_val = rule_tmp->token[j].type;
1153 /* add token and mark done */
1154 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
1156 rule_tmp->token[next_idx].type = TK_UNSET;
1159 if (next_idx == start)
1161 if (next_idx+1 == end)
1167 static int add_rule(struct udev_rules *rules, char *line,
1168 const char *filename, unsigned int filename_off, unsigned int lineno)
1172 struct rule_tmp rule_tmp;
1173 bool bus_warn = false;
1174 bool sysfs_warn = false;
1175 bool id_warn = false;
1177 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
1178 rule_tmp.rules = rules;
1179 rule_tmp.rule.type = TK_RULE;
1180 rule_tmp.rule.rule.filename_off = filename_off;
1181 rule_tmp.rule.rule.filename_line = lineno;
1187 enum operation_type op;
1189 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
1192 if (strcmp(key, "ACTION") == 0) {
1193 if (op > OP_MATCH_MAX) {
1194 err(rules->udev, "invalid ACTION operation\n");
1197 rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
1201 if (strcmp(key, "DEVPATH") == 0) {
1202 if (op > OP_MATCH_MAX) {
1203 err(rules->udev, "invalid DEVPATH operation\n");
1206 rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
1210 if (strcmp(key, "KERNEL") == 0) {
1211 if (op > OP_MATCH_MAX) {
1212 err(rules->udev, "invalid KERNEL operation\n");
1215 rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
1219 if (strcmp(key, "SUBSYSTEM") == 0) {
1220 if (op > OP_MATCH_MAX) {
1221 err(rules->udev, "invalid SUBSYSTEM operation\n");
1224 /* bus, class, subsystem events should all be the same */
1225 if (strcmp(value, "subsystem") == 0 ||
1226 strcmp(value, "bus") == 0 ||
1227 strcmp(value, "class") == 0) {
1228 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1229 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1230 "please fix it in %s:%u", value, filename, lineno);
1231 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1233 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1237 if (strcmp(key, "DRIVER") == 0) {
1238 if (op > OP_MATCH_MAX) {
1239 err(rules->udev, "invalid DRIVER operation\n");
1242 rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1246 if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1247 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1249 err(rules->udev, "error parsing ATTR attribute\n");
1252 if (op < OP_MATCH_MAX) {
1253 rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
1255 rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
1260 if (strcmp(key, "KERNELS") == 0) {
1261 if (op > OP_MATCH_MAX) {
1262 err(rules->udev, "invalid KERNELS operation\n");
1265 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1269 if (strcmp(key, "ID") == 0) {
1272 err(rules->udev, "ID= will be removed in a future udev version, "
1273 "please use KERNEL= to match the event device, or KERNELS= "
1274 "to match a parent device, in %s:%u\n", filename, lineno);
1276 if (op > OP_MATCH_MAX) {
1277 err(rules->udev, "invalid KERNELS operation\n");
1280 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1284 if (strcmp(key, "SUBSYSTEMS") == 0) {
1285 if (op > OP_MATCH_MAX) {
1286 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1289 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1293 if (strcmp(key, "BUS") == 0) {
1296 err(rules->udev, "BUS= will be removed in a future udev version, "
1297 "please use SUBSYSTEM= to match the event device, or SUBSYSTEMS= "
1298 "to match a parent device, in %s:%u\n", filename, lineno);
1300 if (op > OP_MATCH_MAX) {
1301 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1304 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1308 if (strcmp(key, "DRIVERS") == 0) {
1309 if (op > OP_MATCH_MAX) {
1310 err(rules->udev, "invalid DRIVERS operation\n");
1313 rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1317 if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) {
1318 if (op > OP_MATCH_MAX) {
1319 err(rules->udev, "invalid ATTRS operation\n");
1322 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1324 err(rules->udev, "error parsing ATTRS attribute\n");
1327 if (strncmp(attr, "device/", 7) == 0)
1328 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1329 "please fix it in %s:%u", filename, lineno);
1330 else if (strstr(attr, "../") != NULL)
1331 err(rules->udev, "do not reference parent sysfs directories directly, "
1332 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1333 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1337 if (strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1340 err(rules->udev, "SYSFS{}= will be removed in a future udev version, "
1341 "please use ATTR{}= to match the event device, or ATTRS{}= "
1342 "to match a parent device, in %s:%u\n", filename, lineno);
1344 if (op > OP_MATCH_MAX) {
1345 err(rules->udev, "invalid ATTRS operation\n");
1348 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1350 err(rules->udev, "error parsing ATTRS attribute\n");
1353 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1357 if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1358 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1360 err(rules->udev, "error parsing ENV attribute\n");
1363 if (op < OP_MATCH_MAX) {
1364 if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1367 if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1373 if (strcmp(key, "TAG") == 0) {
1374 if (op < OP_MATCH_MAX)
1375 rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
1377 rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
1381 if (strcmp(key, "PROGRAM") == 0) {
1382 rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1386 if (strcmp(key, "RESULT") == 0) {
1387 if (op > OP_MATCH_MAX) {
1388 err(rules->udev, "invalid RESULT operation\n");
1391 rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
1395 if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1396 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1397 if (attr != NULL && strstr(attr, "program")) {
1398 dbg(rules->udev, "IMPORT will be executed\n");
1399 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1400 } else if (attr != NULL && strstr(attr, "file")) {
1401 dbg(rules->udev, "IMPORT will be included as file\n");
1402 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1403 } else if (attr != NULL && strstr(attr, "db")) {
1404 dbg(rules->udev, "IMPORT will include db values\n");
1405 rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
1406 } else if (attr != NULL && strstr(attr, "parent")) {
1407 dbg(rules->udev, "IMPORT will include the parent values\n");
1408 rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1410 /* figure it out if it is executable */
1411 char file[UTIL_PATH_SIZE];
1413 struct stat statbuf;
1415 /* allow programs in /lib/udev called without the path */
1416 if (value[0] != '/')
1417 util_strscpyl(file, sizeof(file), LIBEXECDIR "/", value, NULL);
1419 util_strscpy(file, sizeof(file), value);
1420 pos = strchr(file, ' ');
1423 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1424 if (stat(file, &statbuf) == 0 && (statbuf.st_mode & S_IXUSR)) {
1425 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1426 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1428 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1429 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1435 if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) {
1438 if (op > OP_MATCH_MAX) {
1439 err(rules->udev, "invalid TEST operation\n");
1442 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1444 mode = strtol(attr, NULL, 8);
1445 rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
1447 rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
1452 if (strncmp(key, "RUN", sizeof("RUN")-1) == 0) {
1455 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1456 if (attr != NULL && strstr(attr, "fail_event_on_error"))
1458 rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag);
1462 if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) {
1463 rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1467 if (strcmp(key, "LABEL") == 0) {
1468 rule_tmp.rule.rule.label_off = add_string(rules, value);
1472 if (strcmp(key, "GOTO") == 0) {
1473 rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1477 if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) {
1478 if (op < OP_MATCH_MAX) {
1479 rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
1481 if (strcmp(value, "%k") == 0) {
1482 err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, "
1483 "please remove it from %s:%u\n", filename, lineno);
1486 if (value[0] == '\0') {
1487 info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, "
1488 "please remove it from %s:%u\n", filename, lineno);
1491 rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
1493 rule_tmp.rule.rule.can_set_name = true;
1497 if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) {
1498 if (op < OP_MATCH_MAX) {
1499 rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1503 attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1);
1504 if (attr != NULL && strstr(attr, "unique") != NULL)
1506 rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag);
1508 rule_tmp.rule.rule.can_set_name = true;
1512 if (strcmp(key, "OWNER") == 0) {
1516 uid = strtoul(value, &endptr, 10);
1517 if (endptr[0] == '\0') {
1518 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1519 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1520 uid = add_uid(rules, value);
1521 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1522 } else if (rules->resolve_names >= 0) {
1523 rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
1525 rule_tmp.rule.rule.can_set_name = true;
1529 if (strcmp(key, "GROUP") == 0) {
1533 gid = strtoul(value, &endptr, 10);
1534 if (endptr[0] == '\0') {
1535 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1536 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1537 gid = add_gid(rules, value);
1538 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1539 } else if (rules->resolve_names >= 0) {
1540 rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
1542 rule_tmp.rule.rule.can_set_name = true;
1546 if (strcmp(key, "MODE") == 0) {
1550 mode = strtol(value, &endptr, 8);
1551 if (endptr[0] == '\0')
1552 rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1554 rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
1555 rule_tmp.rule.rule.can_set_name = true;
1559 if (strcmp(key, "OPTIONS") == 0) {
1562 pos = strstr(value, "link_priority=");
1564 int prio = atoi(&pos[strlen("link_priority=")]);
1566 rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1567 dbg(rules->udev, "link priority=%i\n", prio);
1569 pos = strstr(value, "event_timeout=");
1571 int tout = atoi(&pos[strlen("event_timeout=")]);
1573 rule_add_key(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1574 dbg(rules->udev, "event timeout=%i\n", tout);
1576 pos = strstr(value, "string_escape=");
1578 pos = &pos[strlen("string_escape=")];
1579 if (strncmp(pos, "none", strlen("none")) == 0)
1580 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1581 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1582 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1584 pos = strstr(value, "nowatch");
1588 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &off);
1589 dbg(rules->udev, "inotify watch of device disabled\n");
1591 pos = strstr(value, "watch");
1595 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &on);
1596 dbg(rules->udev, "inotify watch of device requested\n");
1599 pos = strstr(value, "static_node=");
1601 rule_add_key(&rule_tmp, TK_A_STATIC_NODE, 0, &pos[strlen("static_node=")], NULL);
1602 rule_tmp.rule.rule.has_static_node = true;
1606 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1609 /* add rule token */
1610 rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
1611 if (add_token(rules, &rule_tmp.rule) != 0)
1614 /* add tokens to list, sorted by type */
1615 if (sort_token(rules, &rule_tmp) != 0)
1620 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1624 static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
1627 unsigned int first_token;
1628 char line[UTIL_LINE_SIZE];
1632 info(rules->udev, "reading '%s' as rules file\n", filename);
1634 f = fopen(filename, "r");
1638 first_token = rules->token_cur;
1640 while (fgets(line, sizeof(line), f) != NULL) {
1644 /* skip whitespace */
1647 while (isspace(key[0]))
1658 /* continue reading if backslash+newline is found */
1659 while (line[len-2] == '\\') {
1660 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1662 if (strlen(&line[len-2]) < 2)
1668 if (len+1 >= sizeof(line)) {
1669 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1672 add_rule(rules, key, filename, filename_off, line_nr);
1676 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1677 for (i = first_token+1; i < rules->token_cur; i++) {
1678 if (rules->tokens[i].type == TK_A_GOTO) {
1679 char *label = &rules->buf[rules->tokens[i].key.value_off];
1682 for (j = i+1; j < rules->token_cur; j++) {
1683 if (rules->tokens[j].type != TK_RULE)
1685 if (rules->tokens[j].rule.label_off == 0)
1687 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1689 rules->tokens[i].key.rule_goto = j;
1692 if (rules->tokens[i].key.rule_goto == 0)
1693 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1699 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1702 char filename[UTIL_PATH_SIZE];
1704 dbg(udev, "open directory '%s'\n", dirname);
1705 dir = opendir(dirname);
1707 info(udev, "unable to open '%s': %m\n", dirname);
1712 struct dirent *dent;
1714 dent = readdir(dir);
1715 if (dent == NULL || dent->d_name[0] == '\0')
1718 if (dent->d_name[0] == '.')
1721 /* look for file matching with specified suffix */
1722 if (suffix != NULL) {
1725 ext = strrchr(dent->d_name, '.');
1728 if (strcmp(ext, suffix) != 0)
1731 util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL);
1732 dbg(udev, "put file '%s' into list\n", filename);
1733 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1740 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1742 struct udev_rules *rules;
1743 struct stat statbuf;
1744 struct udev_list_node file_list;
1745 struct udev_list_entry *file_loop, *file_tmp;
1746 struct token end_token;
1748 rules = malloc(sizeof(struct udev_rules));
1751 memset(rules, 0x00, sizeof(struct udev_rules));
1753 rules->resolve_names = resolve_names;
1754 udev_list_init(&file_list);
1756 /* init token array and string buffer */
1757 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1758 if (rules->tokens == NULL)
1760 rules->token_max = PREALLOC_TOKEN;
1762 rules->buf = malloc(PREALLOC_STRBUF);
1763 if (rules->buf == NULL)
1765 rules->buf_max = PREALLOC_STRBUF;
1766 /* offset 0 is always '\0' */
1767 rules->buf[0] = '\0';
1769 dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1770 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1772 rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node));
1773 if (rules->trie_nodes == NULL)
1775 rules->trie_nodes_max = PREALLOC_TRIE;
1776 /* offset 0 is the trie root, with an empty string */
1777 memset(rules->trie_nodes, 0x00, sizeof(struct trie_node));
1778 rules->trie_nodes_cur = 1;
1780 if (udev_get_rules_path(udev) != NULL) {
1781 /* custom rules location for testing */
1782 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1784 char filename[PATH_MAX];
1785 struct udev_list_node sort_list;
1786 struct udev_list_entry *sort_loop, *sort_tmp;
1788 /* read user/custom rules */
1789 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1791 /* read dynamic/temporary rules */
1792 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/rules.d", NULL);
1793 udev_list_init(&sort_list);
1794 add_matching_files(udev, &sort_list, filename, ".rules");
1796 /* read default rules */
1797 add_matching_files(udev, &sort_list, LIBEXECDIR "/rules.d", ".rules");
1799 /* sort all rules files by basename into list of files */
1800 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1801 const char *sort_name = udev_list_entry_get_name(sort_loop);
1802 const char *sort_base = strrchr(sort_name, '/');
1804 if (sort_base == NULL)
1806 /* sort entry into existing list */
1807 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1808 const char *file_name = udev_list_entry_get_name(file_loop);
1809 const char *file_base = strrchr(file_name, '/');
1811 if (file_base == NULL)
1813 if (strcmp(file_base, sort_base) == 0) {
1814 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1815 file_name, sort_name);
1816 udev_list_entry_delete(sort_loop);
1820 if (strcmp(file_base, sort_base) > 0) {
1821 /* found later file, insert before */
1822 udev_list_entry_remove(sort_loop);
1823 udev_list_entry_insert_before(sort_loop, file_loop);
1828 /* current file already handled */
1829 if (sort_loop == NULL)
1831 /* no later file, append to end of list */
1832 udev_list_entry_remove(sort_loop);
1833 udev_list_entry_append(sort_loop, &file_list);
1837 /* add all filenames to the string buffer */
1838 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1839 const char *filename = udev_list_entry_get_name(file_loop);
1840 unsigned int filename_off;
1842 filename_off = add_string(rules, filename);
1843 /* the offset in the rule is limited to unsigned short */
1844 if (filename_off < USHRT_MAX)
1845 udev_list_entry_set_flags(file_loop, filename_off);
1848 /* parse list of files */
1849 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1850 const char *filename = udev_list_entry_get_name(file_loop);
1851 unsigned int filename_off = udev_list_entry_get_flags(file_loop);
1853 if (stat(filename, &statbuf) == 0 && statbuf.st_size > 0)
1854 parse_file(rules, filename, filename_off);
1856 err(udev, "can not read '%s'\n", filename);
1857 udev_list_entry_delete(file_loop);
1860 memset(&end_token, 0x00, sizeof(struct token));
1861 end_token.type = TK_END;
1862 add_token(rules, &end_token);
1864 /* shrink allocated token and string buffer */
1865 if (rules->token_cur < rules->token_max) {
1866 struct token *tokens;
1868 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1869 if (tokens != NULL || rules->token_cur == 0) {
1870 rules->tokens = tokens;
1871 rules->token_max = rules->token_cur;
1874 if (rules->buf_cur < rules->buf_max) {
1877 buf = realloc(rules->buf, rules->buf_cur);
1878 if (buf != NULL || rules->buf_cur == 0) {
1880 rules->buf_max = rules->buf_cur;
1883 info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1884 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1885 info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n",
1886 rules->trie_nodes_cur * sizeof(struct trie_node),
1887 rules->trie_nodes_cur, sizeof(struct trie_node));
1890 free(rules->trie_nodes);
1891 rules->trie_nodes = NULL;
1892 rules->trie_nodes_cur = 0;
1893 rules->trie_nodes_max = 0;
1895 /* cleanup uid/gid cache */
1898 rules->uids_cur = 0;
1899 rules->uids_max = 0;
1902 rules->gids_cur = 0;
1903 rules->gids_max = 0;
1909 void udev_rules_unref(struct udev_rules *rules)
1913 free(rules->tokens);
1915 free(rules->trie_nodes);
1921 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1923 char *key_value = &rules->buf[token->key.value_off];
1930 switch (token->key.glob) {
1932 match = (strcmp(key_value, val) == 0);
1935 match = (fnmatch(key_value, val, 0) == 0);
1942 split = &rules->buf[token->key.value_off];
1947 next = strchr(split, '|');
1949 size_t matchlen = (size_t)(next - split);
1951 match = (matchlen == len && strncmp(split, val, matchlen) == 0);
1955 match = (strcmp(split, val) == 0);
1964 char value[UTIL_PATH_SIZE];
1966 util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]);
1968 while (key_value != NULL) {
1969 pos = strchr(key_value, '|');
1974 dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val);
1975 match = (fnmatch(key_value, val, 0) == 0);
1983 match = (val[0] != '\0');
1989 if (match && (token->key.op == OP_MATCH)) {
1990 dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type));
1993 if (!match && (token->key.op == OP_NOMATCH)) {
1994 dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type));
1997 dbg(rules->udev, "%s is not true\n", token_str(token->type));
2001 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
2004 char nbuf[UTIL_NAME_SIZE];
2006 char vbuf[UTIL_NAME_SIZE];
2009 name = &rules->buf[cur->key.attr_off];
2010 switch (cur->key.attrsubst) {
2012 udev_event_apply_format(event, name, nbuf, sizeof(nbuf));
2016 value = udev_device_get_sysattr_value(dev, name);
2021 if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0)
2029 /* remove trailing whitespace, if not asked to match for it */
2030 len = strlen(value);
2031 if (len > 0 && isspace(value[len-1])) {
2032 const char *key_value;
2035 key_value = &rules->buf[cur->key.value_off];
2036 klen = strlen(key_value);
2037 if (klen > 0 && !isspace(key_value[klen-1])) {
2038 if (value != vbuf) {
2039 util_strscpy(vbuf, sizeof(vbuf), value);
2042 while (len > 0 && isspace(vbuf[--len]))
2044 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
2048 return match_key(rules, cur, value);
2057 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
2061 enum escape_type esc = ESCAPE_UNSET;
2064 if (rules->tokens == NULL)
2067 can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) &&
2068 (major(udev_device_get_devnum(event->dev)) > 0 ||
2069 strcmp(udev_device_get_subsystem(event->dev), "net") == 0));
2071 /* loop through token list, match, run actions or forward to next rule */
2072 cur = &rules->tokens[0];
2075 dump_token(rules, cur);
2076 switch (cur->type) {
2080 /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
2081 if (!can_set_name && rule->rule.can_set_name)
2086 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
2090 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
2094 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
2099 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
2100 struct udev_list_entry *list_entry;
2103 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
2104 const char *devlink;
2106 devlink = &udev_list_entry_get_name(list_entry)[devlen];
2107 if (match_key(rules, cur, devlink) == 0) {
2117 if (match_key(rules, cur, event->name) != 0)
2122 const char *key_name = &rules->buf[cur->key.attr_off];
2125 value = udev_device_get_property_value(event->dev, key_name);
2126 if (value == NULL) {
2127 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
2130 if (match_key(rules, cur, value))
2136 struct udev_list_entry *list_entry;
2139 udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) {
2140 if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) {
2145 if (!match && (cur->key.op != OP_NOMATCH))
2149 case TK_M_SUBSYSTEM:
2150 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
2154 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
2159 char filename[UTIL_PATH_SIZE];
2162 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2163 found = (wait_for_file(event->dev, filename, 10) == 0);
2164 if (!found && (cur->key.op != OP_NOMATCH))
2169 if (match_attr(rules, event->dev, event, cur) != 0)
2173 case TK_M_SUBSYSTEMS:
2179 /* get whole sequence of parent matches */
2181 while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
2184 /* loop over parents */
2185 event->dev_parent = event->dev;
2189 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
2190 /* loop over sequence of parent match keys */
2191 for (key = cur; key < next; key++ ) {
2192 dump_token(rules, key);
2195 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
2198 case TK_M_SUBSYSTEMS:
2199 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
2203 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
2207 if (match_attr(rules, event->dev_parent, event, key) != 0)
2213 dbg(event->udev, "parent key matched\n");
2215 dbg(event->udev, "all parent keys matched\n");
2216 /* all keys matched */
2220 event->dev_parent = udev_device_get_parent(event->dev_parent);
2221 if (event->dev_parent == NULL)
2224 /* move behind our sequence of parent match keys */
2230 char filename[UTIL_PATH_SIZE];
2231 struct stat statbuf;
2234 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2235 if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) {
2236 if (filename[0] != '/') {
2237 char tmp[UTIL_PATH_SIZE];
2239 util_strscpy(tmp, sizeof(tmp), filename);
2240 util_strscpyl(filename, sizeof(filename),
2241 udev_device_get_syspath(event->dev), "/", tmp, NULL);
2244 attr_subst_subdir(filename, sizeof(filename));
2246 match = (stat(filename, &statbuf) == 0);
2247 dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
2248 if (match && cur->key.mode > 0) {
2249 match = ((statbuf.st_mode & cur->key.mode) > 0);
2250 dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
2251 match ? "matches" : "does not match", cur->key.mode);
2253 if (match && cur->key.op == OP_NOMATCH)
2255 if (!match && cur->key.op == OP_MATCH)
2261 char program[UTIL_PATH_SIZE];
2263 char result[UTIL_PATH_SIZE];
2265 free(event->program_result);
2266 event->program_result = NULL;
2267 udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program));
2268 envp = udev_device_get_properties_envp(event->dev);
2269 info(event->udev, "PROGRAM '%s' %s:%u\n",
2271 &rules->buf[rule->rule.filename_off],
2272 rule->rule.filename_line);
2273 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL, NULL, false) != 0) {
2274 if (cur->key.op != OP_NOMATCH)
2279 util_remove_trailing_chars(result, '\n');
2280 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2281 count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
2283 info(event->udev, "%i character(s) replaced\n" , count);
2285 event->program_result = strdup(result);
2286 dbg(event->udev, "storing result '%s'\n", event->program_result);
2287 if (cur->key.op == OP_NOMATCH)
2292 case TK_M_IMPORT_FILE:
2294 char import[UTIL_PATH_SIZE];
2296 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2297 if (import_file_into_properties(event->dev, import) != 0)
2298 if (cur->key.op != OP_NOMATCH)
2302 case TK_M_IMPORT_PROG:
2304 char import[UTIL_PATH_SIZE];
2306 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2307 info(event->udev, "IMPORT '%s' %s:%u\n",
2309 &rules->buf[rule->rule.filename_off],
2310 rule->rule.filename_line);
2311 if (import_program_into_properties(event->dev, import) != 0)
2312 if (cur->key.op != OP_NOMATCH)
2316 case TK_M_IMPORT_DB:
2318 const char *key = &rules->buf[cur->key.value_off];
2321 value = udev_device_get_property_value(event->dev_db, key);
2322 if (value != NULL) {
2323 struct udev_list_entry *entry;
2325 entry = udev_device_add_property(event->dev, key, value);
2326 udev_list_entry_set_flags(entry, 1);
2328 if (cur->key.op != OP_NOMATCH)
2333 case TK_M_IMPORT_PARENT:
2335 char import[UTIL_PATH_SIZE];
2337 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2338 if (import_parent_into_properties(event->dev, import) != 0)
2339 if (cur->key.op != OP_NOMATCH)
2344 if (match_key(rules, cur, event->program_result) != 0)
2347 case TK_A_STRING_ESCAPE_NONE:
2350 case TK_A_STRING_ESCAPE_REPLACE:
2351 esc = ESCAPE_REPLACE;
2353 case TK_A_INOTIFY_WATCH:
2354 event->inotify_watch = cur->key.watch;
2356 case TK_A_DEVLINK_PRIO:
2357 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2361 char owner[UTIL_NAME_SIZE];
2363 if (event->owner_final)
2365 if (cur->key.op == OP_ASSIGN_FINAL)
2366 event->owner_final = true;
2367 udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner));
2368 event->uid = util_lookup_user(event->udev, owner);
2369 info(event->udev, "OWNER %u %s:%u\n",
2371 &rules->buf[rule->rule.filename_off],
2372 rule->rule.filename_line);
2377 char group[UTIL_NAME_SIZE];
2379 if (event->group_final)
2381 if (cur->key.op == OP_ASSIGN_FINAL)
2382 event->group_final = true;
2383 udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group));
2384 event->gid = util_lookup_group(event->udev, group);
2385 info(event->udev, "GROUP %u %s:%u\n",
2387 &rules->buf[rule->rule.filename_off],
2388 rule->rule.filename_line);
2393 char mode[UTIL_NAME_SIZE];
2396 if (event->mode_final)
2398 if (cur->key.op == OP_ASSIGN_FINAL)
2399 event->mode_final = true;
2400 udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode, sizeof(mode));
2401 event->mode = strtol(mode, &endptr, 8);
2402 if (endptr[0] != '\0') {
2403 err(event->udev, "invalide mode '%s' set default mode 0600\n", mode);
2406 info(event->udev, "MODE %#o %s:%u\n",
2408 &rules->buf[rule->rule.filename_off],
2409 rule->rule.filename_line);
2413 if (event->owner_final)
2415 if (cur->key.op == OP_ASSIGN_FINAL)
2416 event->owner_final = true;
2417 event->uid = cur->key.uid;
2418 info(event->udev, "OWNER %u %s:%u\n",
2420 &rules->buf[rule->rule.filename_off],
2421 rule->rule.filename_line);
2424 if (event->group_final)
2426 if (cur->key.op == OP_ASSIGN_FINAL)
2427 event->group_final = true;
2428 event->gid = cur->key.gid;
2429 info(event->udev, "GROUP %u %s:%u\n",
2431 &rules->buf[rule->rule.filename_off],
2432 rule->rule.filename_line);
2435 if (event->mode_final)
2437 if (cur->key.op == OP_ASSIGN_FINAL)
2438 event->mode_final = true;
2439 event->mode = cur->key.mode;
2440 info(event->udev, "MODE %#o %s:%u\n",
2442 &rules->buf[rule->rule.filename_off],
2443 rule->rule.filename_line);
2445 case TK_A_STATIC_NODE:
2449 const char *name = &rules->buf[cur->key.attr_off];
2450 char *value = &rules->buf[cur->key.value_off];
2452 if (value[0] != '\0') {
2453 char temp_value[UTIL_NAME_SIZE];
2454 struct udev_list_entry *entry;
2456 udev_event_apply_format(event, value, temp_value, sizeof(temp_value));
2457 entry = udev_device_add_property(event->dev, name, temp_value);
2458 /* store in db, skip private keys */
2460 udev_list_entry_set_flags(entry, 1);
2462 udev_device_add_property(event->dev, name, NULL);
2467 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2468 udev_device_cleanup_tags_list(event->dev);
2469 udev_device_add_tag(event->dev, &rules->buf[cur->key.value_off]);
2473 const char *name = &rules->buf[cur->key.value_off];
2474 char name_str[UTIL_PATH_SIZE];
2477 if (event->name_final)
2479 if (cur->key.op == OP_ASSIGN_FINAL)
2480 event->name_final = true;
2481 udev_event_apply_format(event, name, name_str, sizeof(name_str));
2482 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2483 count = udev_util_replace_chars(name_str, "/");
2485 info(event->udev, "%i character(s) replaced\n", count);
2488 event->name = strdup(name_str);
2489 info(event->udev, "NAME '%s' %s:%u\n",
2491 &rules->buf[rule->rule.filename_off],
2492 rule->rule.filename_line);
2497 char temp[UTIL_PATH_SIZE];
2498 char filename[UTIL_PATH_SIZE];
2502 if (event->devlink_final)
2504 if (major(udev_device_get_devnum(event->dev)) == 0)
2506 if (cur->key.op == OP_ASSIGN_FINAL)
2507 event->devlink_final = true;
2508 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2509 udev_device_cleanup_devlinks_list(event->dev);
2511 /* allow multiple symlinks separated by spaces */
2512 udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp));
2513 if (esc == ESCAPE_UNSET)
2514 count = udev_util_replace_chars(temp, "/ ");
2515 else if (esc == ESCAPE_REPLACE)
2516 count = udev_util_replace_chars(temp, "/");
2518 info(event->udev, "%i character(s) replaced\n" , count);
2519 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2521 while (isspace(pos[0]))
2523 next = strchr(pos, ' ');
2524 while (next != NULL) {
2526 info(event->udev, "LINK '%s' %s:%u\n", pos,
2527 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2528 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2529 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2530 while (isspace(next[1]))
2533 next = strchr(pos, ' ');
2535 if (pos[0] != '\0') {
2536 info(event->udev, "LINK '%s' %s:%u\n", pos,
2537 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2538 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2539 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2543 case TK_A_EVENT_TIMEOUT:
2544 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2548 const char *key_name = &rules->buf[cur->key.attr_off];
2549 char attr[UTIL_PATH_SIZE];
2550 char value[UTIL_NAME_SIZE];
2553 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
2554 util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
2555 attr_subst_subdir(attr, sizeof(attr));
2557 udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value));
2558 info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value,
2559 &rules->buf[rule->rule.filename_off],
2560 rule->rule.filename_line);
2561 f = fopen(attr, "w");
2563 if (fprintf(f, "%s", value) <= 0)
2564 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2567 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2573 struct udev_list_entry *list_entry;
2575 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2576 udev_list_cleanup_entries(event->udev, &event->run_list);
2577 info(event->udev, "RUN '%s' %s:%u\n",
2578 &rules->buf[cur->key.value_off],
2579 &rules->buf[rule->rule.filename_off],
2580 rule->rule.filename_line);
2581 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2582 &rules->buf[cur->key.value_off], NULL, 1, 0);
2583 if (cur->key.fail_on_error)
2584 udev_list_entry_set_flags(list_entry, 1);
2588 if (cur->key.rule_goto == 0)
2590 cur = &rules->tokens[cur->key.rule_goto];
2595 case TK_M_PARENTS_MIN:
2596 case TK_M_PARENTS_MAX:
2599 err(rules->udev, "wrong type %u\n", cur->type);
2606 /* fast-forward to next rule */
2607 cur = rule + rule->rule.token_count;
2608 dbg(rules->udev, "forward to rule: %u\n",
2609 (unsigned int) (cur - rules->tokens));
2613 void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
2621 if (rules->tokens == NULL)
2624 cur = &rules->tokens[0];
2627 switch (cur->type) {
2632 /* skip rules without a static_node tag */
2633 if (!rule->rule.has_static_node)
2647 mode = cur->key.mode;
2649 case TK_A_STATIC_NODE: {
2650 char filename[UTIL_PATH_SIZE];
2652 /* we assure, that the permissions tokens are sorted before the static token */
2653 if (mode == 0 && uid == 0 && gid == 0)
2655 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/",
2656 &rules->buf[cur->key.value_off], NULL);
2657 if (stat(filename, &stats) != 0)
2659 if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
2661 if (mode != 0 && mode != (stats.st_mode & 0777)) {
2662 chmod(filename, mode);
2663 info(rules->udev, "chmod '%s' %#o\n", filename, mode);
2665 if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
2666 chown(filename, uid, gid);
2667 info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid);
2669 utimensat(AT_FDCWD, filename, NULL, 0);
2679 /* fast-forward to next rule */
2680 cur = rule + rule->rule.token_count;