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'\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]);
339 case TK_M_SUBSYSTEMS:
342 case TK_M_IMPORT_FILE:
343 case TK_M_IMPORT_PROG:
345 case TK_M_IMPORT_PARENT:
353 dbg(rules->udev, "%s %s '%s'(%s)\n",
354 token_str(type), operation_str(op), value, string_glob_str(glob));
361 dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
362 token_str(type), operation_str(op), attr, value, string_glob_str(glob));
366 dbg(rules->udev, "%s %s '%s'\n", token_str(type), operation_str(op), value);
368 case TK_A_STRING_ESCAPE_NONE:
369 case TK_A_STRING_ESCAPE_REPLACE:
370 dbg(rules->udev, "%s\n", token_str(type));
373 dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
374 token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
376 case TK_A_INOTIFY_WATCH:
377 dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch);
379 case TK_A_DEVLINK_PRIO:
380 dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio);
383 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid);
386 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid);
389 dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode);
391 case TK_A_STATIC_NODE:
392 dbg(rules->udev, "%s '%s'\n", token_str(type), value);
394 case TK_A_EVENT_TIMEOUT:
395 dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout);
398 dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto);
401 dbg(rules->udev, "* %s\n", token_str(type));
403 case TK_M_PARENTS_MIN:
404 case TK_M_PARENTS_MAX:
407 dbg(rules->udev, "unknown type %u\n", type);
412 static void dump_rules(struct udev_rules *rules)
416 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
418 rules->token_cur * sizeof(struct token),
421 for(i = 0; i < rules->token_cur; i++)
422 dump_token(rules, &rules->tokens[i]);
425 static inline const char *operation_str(enum operation_type type) { return NULL; }
426 static inline const char *token_str(enum token_type type) { return NULL; }
427 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
428 static inline void dump_rules(struct udev_rules *rules) {}
429 #endif /* ENABLE_DEBUG */
431 static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes)
435 /* grow buffer if needed */
436 if (rules->buf_cur + bytes+1 >= rules->buf_max) {
440 /* double the buffer size */
441 add = rules->buf_max;
445 buf = realloc(rules->buf, rules->buf_max + add);
448 dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
450 rules->buf_max += add;
452 off = rules->buf_cur;
453 memcpy(&rules->buf[rules->buf_cur], str, bytes);
454 rules->buf_cur += bytes;
459 static int add_string(struct udev_rules *rules, const char *str)
461 unsigned int node_idx;
462 struct trie_node *new_node;
463 unsigned int new_node_idx;
468 struct trie_node *parent;
470 /* walk trie, start from last character of str to find matching tails */
474 for (depth = 0; depth <= len; depth++) {
475 struct trie_node *node;
476 unsigned int child_idx;
478 node = &rules->trie_nodes[node_idx];
479 off = node->value_off + node->value_len - len;
481 /* match against current node */
482 if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0))
485 /* lookup child node */
486 key = str[len - 1 - depth];
487 child_idx = node->child_idx;
488 while (child_idx > 0) {
489 struct trie_node *child;
491 child = &rules->trie_nodes[child_idx];
492 if (child->key == key)
494 child_idx = child->next_child_idx;
498 node_idx = child_idx;
501 /* string not found, add it */
502 off = add_new_string(rules, str, len + 1);
504 /* grow trie nodes if needed */
505 if (rules->trie_nodes_cur >= rules->trie_nodes_max) {
506 struct trie_node *nodes;
509 /* double the buffer size */
510 add = rules->trie_nodes_max;
514 nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node));
517 dbg(rules->udev, "extend trie nodes from %u to %u\n",
518 rules->trie_nodes_max, rules->trie_nodes_max + add);
519 rules->trie_nodes = nodes;
520 rules->trie_nodes_max += add;
524 new_node_idx = rules->trie_nodes_cur;
525 rules->trie_nodes_cur++;
526 new_node = &rules->trie_nodes[new_node_idx];
527 memset(new_node, 0x00, sizeof(struct trie_node));
528 new_node->value_off = off;
529 new_node->value_len = len;
532 /* join the parent's child list */
533 parent = &rules->trie_nodes[node_idx];
534 if (parent->child_idx == 0) {
535 parent->child_idx = new_node_idx;
537 struct trie_node *last_child;
539 last_child = &rules->trie_nodes[parent->last_child_idx];
540 last_child->next_child_idx = new_node_idx;
542 parent->last_child_idx = new_node_idx;
546 static int add_token(struct udev_rules *rules, struct token *token)
548 /* grow buffer if needed */
549 if (rules->token_cur+1 >= rules->token_max) {
550 struct token *tokens;
553 /* double the buffer size */
554 add = rules->token_max;
558 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
561 dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
562 rules->tokens = tokens;
563 rules->token_max += add;
565 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
570 static uid_t add_uid(struct udev_rules *rules, const char *owner)
576 /* lookup, if we know it already */
577 for (i = 0; i < rules->uids_cur; i++) {
578 off = rules->uids[i].name_off;
579 if (strcmp(&rules->buf[off], owner) == 0) {
580 uid = rules->uids[i].uid;
581 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
585 uid = util_lookup_user(rules->udev, owner);
587 /* grow buffer if needed */
588 if (rules->uids_cur+1 >= rules->uids_max) {
589 struct uid_gid *uids;
592 /* double the buffer size */
593 add = rules->uids_max;
597 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
600 dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
602 rules->uids_max += add;
604 rules->uids[rules->uids_cur].uid = uid;
605 off = add_string(rules, owner);
608 rules->uids[rules->uids_cur].name_off = off;
613 static gid_t add_gid(struct udev_rules *rules, const char *group)
619 /* lookup, if we know it already */
620 for (i = 0; i < rules->gids_cur; i++) {
621 off = rules->gids[i].name_off;
622 if (strcmp(&rules->buf[off], group) == 0) {
623 gid = rules->gids[i].gid;
624 dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
628 gid = util_lookup_group(rules->udev, group);
630 /* grow buffer if needed */
631 if (rules->gids_cur+1 >= rules->gids_max) {
632 struct uid_gid *gids;
635 /* double the buffer size */
636 add = rules->gids_max;
640 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
643 dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
645 rules->gids_max += add;
647 rules->gids[rules->gids_cur].gid = gid;
648 off = add_string(rules, group);
651 rules->gids[rules->gids_cur].name_off = off;
656 static int import_property_from_string(struct udev_device *dev, char *line)
658 struct udev *udev = udev_device_get_udev(dev);
665 while (isspace(key[0]))
668 /* comment or empty line */
669 if (key[0] == '#' || key[0] == '\0')
672 /* split key/value */
673 val = strchr(key, '=');
680 while (isspace(val[0]))
687 while (isspace(key[len-1]))
691 /* terminate value */
695 while (isspace(val[len-1]))
703 if (val[0] == '"' || val[0] == '\'') {
704 if (val[len-1] != val[0]) {
705 info(udev, "inconsistent quoting: '%s', skip\n", line);
712 dbg(udev, "adding '%s'='%s'\n", key, val);
714 /* handle device, renamed by external tool, returning new path */
715 if (strcmp(key, "DEVPATH") == 0) {
716 char syspath[UTIL_PATH_SIZE];
718 info(udev, "updating devpath from '%s' to '%s'\n",
719 udev_device_get_devpath(dev), val);
720 util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL);
721 udev_device_set_syspath(dev, syspath);
723 struct udev_list_entry *entry;
725 entry = udev_device_add_property(dev, key, val);
726 /* store in db, skip private keys */
728 udev_list_entry_set_flags(entry, 1);
733 static int import_file_into_properties(struct udev_device *dev, const char *filename)
736 char line[UTIL_LINE_SIZE];
738 f = fopen(filename, "r");
741 while (fgets(line, sizeof(line), f) != NULL)
742 import_property_from_string(dev, line);
747 static int import_program_into_properties(struct udev_device *dev, const char *program)
749 struct udev *udev = udev_device_get_udev(dev);
755 envp = udev_device_get_properties_envp(dev);
756 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen, NULL, false) != 0)
760 while (line != NULL) {
763 pos = strchr(line, '\n');
768 import_property_from_string(dev, line);
774 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
776 struct udev *udev = udev_device_get_udev(dev);
777 struct udev_device *dev_parent;
778 struct udev_list_entry *list_entry;
780 dev_parent = udev_device_get_parent(dev);
781 if (dev_parent == NULL)
784 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
785 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
786 const char *key = udev_list_entry_get_name(list_entry);
787 const char *val = udev_list_entry_get_value(list_entry);
789 if (fnmatch(filter, key, 0) == 0) {
790 struct udev_list_entry *entry;
792 dbg(udev, "import key '%s=%s'\n", key, val);
793 entry = udev_device_add_property(dev, key, val);
794 /* store in db, skip private keys */
796 udev_list_entry_set_flags(entry, 1);
802 #define WAIT_LOOP_PER_SECOND 50
803 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
805 struct udev *udev = udev_device_get_udev(dev);
806 char filepath[UTIL_PATH_SIZE];
807 char devicepath[UTIL_PATH_SIZE];
809 int loop = timeout * WAIT_LOOP_PER_SECOND;
811 /* a relative path is a device attribute */
812 devicepath[0] = '\0';
813 if (file[0] != '/') {
814 util_strscpyl(devicepath, sizeof(devicepath),
815 udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL);
816 util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
820 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
822 const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND };
825 if (stat(file, &stats) == 0) {
826 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
829 /* make sure, the device did not disappear in the meantime */
830 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
831 info(udev, "device disappeared while waiting for '%s'\n", file);
834 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
835 nanosleep(&duration, NULL);
837 info(udev, "waiting for '%s' failed\n", file);
841 static int attr_subst_subdir(char *attr, size_t len)
845 if (strstr(attr, "/*/")) {
847 char dirname[UTIL_PATH_SIZE];
851 util_strscpy(dirname, sizeof(dirname), attr);
852 pos = strstr(dirname, "/*/");
857 dir = opendir(dirname);
861 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
864 if (dent->d_name[0] == '.')
866 util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
867 if (stat(attr, &stats) == 0) {
879 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
885 if (linepos == NULL || linepos[0] == '\0')
888 /* skip whitespace */
889 while (isspace(linepos[0]) || linepos[0] == ',')
893 if (linepos[0] == '\0')
899 if (linepos[0] == '\0')
901 if (isspace(linepos[0]))
903 if (linepos[0] == '=')
905 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
906 if (linepos[1] == '=')
910 /* remember end of key */
913 /* skip whitespace after key */
914 while (isspace(linepos[0]))
916 if (linepos[0] == '\0')
919 /* get operation type */
920 if (linepos[0] == '=' && linepos[1] == '=') {
923 } else if (linepos[0] == '!' && linepos[1] == '=') {
926 } else if (linepos[0] == '+' && linepos[1] == '=') {
929 } else if (linepos[0] == '=') {
932 } else if (linepos[0] == ':' && linepos[1] == '=') {
933 *op = OP_ASSIGN_FINAL;
941 /* skip whitespace after operator */
942 while (isspace(linepos[0]))
944 if (linepos[0] == '\0')
948 if (linepos[0] == '"')
955 temp = strchr(linepos, '"');
960 dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value);
962 /* move line to next key */
967 /* extract possible KEY{attr} */
968 static char *get_key_attribute(struct udev *udev, char *str)
973 attr = strchr(str, '{');
976 pos = strchr(attr, '}');
978 err(udev, "missing closing brace for format\n");
982 dbg(udev, "attribute='%s'\n", attr);
988 static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
989 enum operation_type op,
990 const char *value, const void *data)
992 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
993 const char *attr = NULL;
995 memset(token, 0x00, sizeof(struct token));
1001 case TK_M_SUBSYSTEM:
1007 case TK_M_SUBSYSTEMS:
1010 case TK_M_IMPORT_FILE:
1011 case TK_M_IMPORT_PROG:
1012 case TK_M_IMPORT_DB:
1013 case TK_M_IMPORT_PARENT:
1022 token->key.value_off = add_string(rule_tmp->rules, value);
1030 token->key.value_off = add_string(rule_tmp->rules, value);
1031 token->key.attr_off = add_string(rule_tmp->rules, attr);
1034 token->key.value_off = add_string(rule_tmp->rules, value);
1035 token->key.devlink_unique = *(int *)data;
1038 token->key.value_off = add_string(rule_tmp->rules, value);
1040 token->key.mode = *(mode_t *)data;
1042 case TK_A_STRING_ESCAPE_NONE:
1043 case TK_A_STRING_ESCAPE_REPLACE:
1046 token->key.value_off = add_string(rule_tmp->rules, value);
1047 token->key.fail_on_error = *(int *)data;
1049 case TK_A_INOTIFY_WATCH:
1050 case TK_A_DEVLINK_PRIO:
1051 token->key.devlink_prio = *(int *)data;
1054 token->key.uid = *(uid_t *)data;
1057 token->key.gid = *(gid_t *)data;
1060 token->key.mode = *(mode_t *)data;
1062 case TK_A_STATIC_NODE:
1063 token->key.value_off = add_string(rule_tmp->rules, value);
1065 case TK_A_EVENT_TIMEOUT:
1066 token->key.event_timeout = *(int *)data;
1069 case TK_M_PARENTS_MIN:
1070 case TK_M_PARENTS_MAX:
1074 err(rule_tmp->rules->udev, "wrong type %u\n", type);
1078 if (value != NULL && type < TK_M_MAX) {
1079 /* check if we need to split or call fnmatch() while matching rules */
1080 enum string_glob_type glob;
1084 has_split = (strchr(value, '|') != NULL);
1085 has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL);
1086 if (has_split && has_glob) {
1087 glob = GL_SPLIT_GLOB;
1088 } else if (has_split) {
1090 } else if (has_glob) {
1091 if (strcmp(value, "?*") == 0)
1092 glob = GL_SOMETHING;
1098 token->key.glob = glob;
1101 if (value != NULL && type > TK_M_MAX) {
1102 /* check if assigned value has substitution chars */
1103 if (value[0] == '[')
1104 token->key.subst = SB_SUBSYS;
1105 else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
1106 token->key.subst = SB_FORMAT;
1108 token->key.subst = SB_NONE;
1112 /* check if property/attribut name has substitution chars */
1114 token->key.attrsubst = SB_SUBSYS;
1115 else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL)
1116 token->key.attrsubst = SB_FORMAT;
1118 token->key.attrsubst = SB_NONE;
1121 token->key.type = type;
1123 rule_tmp->token_cur++;
1124 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
1125 err(rule_tmp->rules->udev, "temporary rule array too small\n");
1131 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
1134 unsigned int start = 0;
1135 unsigned int end = rule_tmp->token_cur;
1137 for (i = 0; i < rule_tmp->token_cur; i++) {
1138 enum token_type next_val = TK_UNSET;
1139 unsigned int next_idx = 0;
1142 /* find smallest value */
1143 for (j = start; j < end; j++) {
1144 if (rule_tmp->token[j].type == TK_UNSET)
1146 if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
1147 next_val = rule_tmp->token[j].type;
1152 /* add token and mark done */
1153 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
1155 rule_tmp->token[next_idx].type = TK_UNSET;
1158 if (next_idx == start)
1160 if (next_idx+1 == end)
1166 static int add_rule(struct udev_rules *rules, char *line,
1167 const char *filename, unsigned int filename_off, unsigned int lineno)
1171 struct rule_tmp rule_tmp;
1172 bool bus_warn = false;
1173 bool sysfs_warn = false;
1174 bool id_warn = false;
1176 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
1177 rule_tmp.rules = rules;
1178 rule_tmp.rule.type = TK_RULE;
1179 rule_tmp.rule.rule.filename_off = filename_off;
1180 rule_tmp.rule.rule.filename_line = lineno;
1186 enum operation_type op;
1188 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
1191 if (strcmp(key, "ACTION") == 0) {
1192 if (op > OP_MATCH_MAX) {
1193 err(rules->udev, "invalid ACTION operation\n");
1196 rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
1200 if (strcmp(key, "DEVPATH") == 0) {
1201 if (op > OP_MATCH_MAX) {
1202 err(rules->udev, "invalid DEVPATH operation\n");
1205 rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
1209 if (strcmp(key, "KERNEL") == 0) {
1210 if (op > OP_MATCH_MAX) {
1211 err(rules->udev, "invalid KERNEL operation\n");
1214 rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
1218 if (strcmp(key, "SUBSYSTEM") == 0) {
1219 if (op > OP_MATCH_MAX) {
1220 err(rules->udev, "invalid SUBSYSTEM operation\n");
1223 /* bus, class, subsystem events should all be the same */
1224 if (strcmp(value, "subsystem") == 0 ||
1225 strcmp(value, "bus") == 0 ||
1226 strcmp(value, "class") == 0) {
1227 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1228 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1229 "please fix it in %s:%u", value, filename, lineno);
1230 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1232 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1236 if (strcmp(key, "DRIVER") == 0) {
1237 if (op > OP_MATCH_MAX) {
1238 err(rules->udev, "invalid DRIVER operation\n");
1241 rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1245 if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1246 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1248 err(rules->udev, "error parsing ATTR attribute\n");
1251 if (op < OP_MATCH_MAX) {
1252 rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
1254 rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
1259 if (strcmp(key, "KERNELS") == 0) {
1260 if (op > OP_MATCH_MAX) {
1261 err(rules->udev, "invalid KERNELS operation\n");
1264 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1268 if (strcmp(key, "ID") == 0) {
1271 err(rules->udev, "ID= will be removed in a future udev version, "
1272 "please use KERNEL= to match the event device, or KERNELS= "
1273 "to match a parent device, in %s:%u\n", filename, lineno);
1275 if (op > OP_MATCH_MAX) {
1276 err(rules->udev, "invalid KERNELS operation\n");
1279 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1283 if (strcmp(key, "SUBSYSTEMS") == 0) {
1284 if (op > OP_MATCH_MAX) {
1285 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1288 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1292 if (strcmp(key, "BUS") == 0) {
1295 err(rules->udev, "BUS= will be removed in a future udev version, "
1296 "please use SUBSYSTEM= to match the event device, or SUBSYSTEMS= "
1297 "to match a parent device, in %s:%u\n", filename, lineno);
1299 if (op > OP_MATCH_MAX) {
1300 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1303 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1307 if (strcmp(key, "DRIVERS") == 0) {
1308 if (op > OP_MATCH_MAX) {
1309 err(rules->udev, "invalid DRIVERS operation\n");
1312 rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1316 if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) {
1317 if (op > OP_MATCH_MAX) {
1318 err(rules->udev, "invalid ATTRS operation\n");
1321 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1323 err(rules->udev, "error parsing ATTRS attribute\n");
1326 if (strncmp(attr, "device/", 7) == 0)
1327 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1328 "please fix it in %s:%u", filename, lineno);
1329 else if (strstr(attr, "../") != NULL)
1330 err(rules->udev, "do not reference parent sysfs directories directly, "
1331 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1332 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1336 if (strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1339 err(rules->udev, "SYSFS{}= will be removed in a future udev version, "
1340 "please use ATTR{}= to match the event device, or ATTRS{}= "
1341 "to match a parent device, in %s:%u\n", filename, lineno);
1343 if (op > OP_MATCH_MAX) {
1344 err(rules->udev, "invalid ATTRS operation\n");
1347 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1349 err(rules->udev, "error parsing ATTRS attribute\n");
1352 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1356 if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1357 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1359 err(rules->udev, "error parsing ENV attribute\n");
1362 if (op < OP_MATCH_MAX) {
1363 if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1366 if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1372 if (strcmp(key, "TAG") == 0) {
1373 if (op < OP_MATCH_MAX)
1374 rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
1376 rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
1380 if (strcmp(key, "PROGRAM") == 0) {
1381 rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1385 if (strcmp(key, "RESULT") == 0) {
1386 if (op > OP_MATCH_MAX) {
1387 err(rules->udev, "invalid RESULT operation\n");
1390 rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
1394 if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1395 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1396 if (attr != NULL && strstr(attr, "program")) {
1397 dbg(rules->udev, "IMPORT will be executed\n");
1398 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1399 } else if (attr != NULL && strstr(attr, "file")) {
1400 dbg(rules->udev, "IMPORT will be included as file\n");
1401 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1402 } else if (attr != NULL && strstr(attr, "db")) {
1403 dbg(rules->udev, "IMPORT will include db values\n");
1404 rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
1405 } else if (attr != NULL && strstr(attr, "parent")) {
1406 dbg(rules->udev, "IMPORT will include the parent values\n");
1407 rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1409 /* figure it out if it is executable */
1410 char file[UTIL_PATH_SIZE];
1412 struct stat statbuf;
1414 /* allow programs in /lib/udev called without the path */
1415 if (value[0] != '/')
1416 util_strscpyl(file, sizeof(file), LIBEXECDIR "/", value, NULL);
1418 util_strscpy(file, sizeof(file), value);
1419 pos = strchr(file, ' ');
1422 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1423 if (stat(file, &statbuf) == 0 && (statbuf.st_mode & S_IXUSR)) {
1424 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1425 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1427 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1428 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1434 if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) {
1437 if (op > OP_MATCH_MAX) {
1438 err(rules->udev, "invalid TEST operation\n");
1441 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1443 mode = strtol(attr, NULL, 8);
1444 rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
1446 rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
1451 if (strncmp(key, "RUN", sizeof("RUN")-1) == 0) {
1454 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1455 if (attr != NULL && strstr(attr, "fail_event_on_error"))
1457 rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag);
1461 if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) {
1462 rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1466 if (strcmp(key, "LABEL") == 0) {
1467 rule_tmp.rule.rule.label_off = add_string(rules, value);
1471 if (strcmp(key, "GOTO") == 0) {
1472 rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1476 if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) {
1477 if (op < OP_MATCH_MAX) {
1478 rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
1480 if (strcmp(value, "%k") == 0) {
1481 err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, "
1482 "please remove it from %s:%u\n", filename, lineno);
1485 if (value[0] == '\0') {
1486 info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, "
1487 "please remove it from %s:%u\n", filename, lineno);
1490 rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
1492 rule_tmp.rule.rule.can_set_name = true;
1496 if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) {
1497 if (op < OP_MATCH_MAX) {
1498 rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1502 attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1);
1503 if (attr != NULL && strstr(attr, "unique") != NULL)
1505 rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag);
1507 rule_tmp.rule.rule.can_set_name = true;
1511 if (strcmp(key, "OWNER") == 0) {
1515 uid = strtoul(value, &endptr, 10);
1516 if (endptr[0] == '\0') {
1517 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1518 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1519 uid = add_uid(rules, value);
1520 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1521 } else if (rules->resolve_names >= 0) {
1522 rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
1524 rule_tmp.rule.rule.can_set_name = true;
1528 if (strcmp(key, "GROUP") == 0) {
1532 gid = strtoul(value, &endptr, 10);
1533 if (endptr[0] == '\0') {
1534 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1535 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1536 gid = add_gid(rules, value);
1537 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1538 } else if (rules->resolve_names >= 0) {
1539 rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
1541 rule_tmp.rule.rule.can_set_name = true;
1545 if (strcmp(key, "MODE") == 0) {
1549 mode = strtol(value, &endptr, 8);
1550 if (endptr[0] == '\0')
1551 rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1553 rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
1554 rule_tmp.rule.rule.can_set_name = true;
1558 if (strcmp(key, "OPTIONS") == 0) {
1561 pos = strstr(value, "link_priority=");
1563 int prio = atoi(&pos[strlen("link_priority=")]);
1565 rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1566 dbg(rules->udev, "link priority=%i\n", prio);
1568 pos = strstr(value, "event_timeout=");
1570 int tout = atoi(&pos[strlen("event_timeout=")]);
1572 rule_add_key(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1573 dbg(rules->udev, "event timeout=%i\n", tout);
1575 pos = strstr(value, "string_escape=");
1577 pos = &pos[strlen("string_escape=")];
1578 if (strncmp(pos, "none", strlen("none")) == 0)
1579 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1580 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1581 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1583 pos = strstr(value, "nowatch");
1587 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &off);
1588 dbg(rules->udev, "inotify watch of device disabled\n");
1590 pos = strstr(value, "watch");
1594 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &on);
1595 dbg(rules->udev, "inotify watch of device requested\n");
1598 pos = strstr(value, "static_node=");
1600 rule_add_key(&rule_tmp, TK_A_STATIC_NODE, 0, &pos[strlen("static_node=")], NULL);
1601 rule_tmp.rule.rule.has_static_node = true;
1605 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1608 /* add rule token */
1609 rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
1610 if (add_token(rules, &rule_tmp.rule) != 0)
1613 /* add tokens to list, sorted by type */
1614 if (sort_token(rules, &rule_tmp) != 0)
1619 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1623 static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
1626 unsigned int first_token;
1627 char line[UTIL_LINE_SIZE];
1631 info(rules->udev, "reading '%s' as rules file\n", filename);
1633 f = fopen(filename, "r");
1637 first_token = rules->token_cur;
1639 while (fgets(line, sizeof(line), f) != NULL) {
1643 /* skip whitespace */
1646 while (isspace(key[0]))
1657 /* continue reading if backslash+newline is found */
1658 while (line[len-2] == '\\') {
1659 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1661 if (strlen(&line[len-2]) < 2)
1667 if (len+1 >= sizeof(line)) {
1668 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1671 add_rule(rules, key, filename, filename_off, line_nr);
1675 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1676 for (i = first_token+1; i < rules->token_cur; i++) {
1677 if (rules->tokens[i].type == TK_A_GOTO) {
1678 char *label = &rules->buf[rules->tokens[i].key.value_off];
1681 for (j = i+1; j < rules->token_cur; j++) {
1682 if (rules->tokens[j].type != TK_RULE)
1684 if (rules->tokens[j].rule.label_off == 0)
1686 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1688 rules->tokens[i].key.rule_goto = j;
1691 if (rules->tokens[i].key.rule_goto == 0)
1692 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1698 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1701 char filename[UTIL_PATH_SIZE];
1703 dbg(udev, "open directory '%s'\n", dirname);
1704 dir = opendir(dirname);
1706 info(udev, "unable to open '%s': %m\n", dirname);
1711 struct dirent *dent;
1713 dent = readdir(dir);
1714 if (dent == NULL || dent->d_name[0] == '\0')
1717 if (dent->d_name[0] == '.')
1720 /* look for file matching with specified suffix */
1721 if (suffix != NULL) {
1724 ext = strrchr(dent->d_name, '.');
1727 if (strcmp(ext, suffix) != 0)
1730 util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL);
1731 dbg(udev, "put file '%s' into list\n", filename);
1732 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1739 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1741 struct udev_rules *rules;
1742 struct stat statbuf;
1743 struct udev_list_node file_list;
1744 struct udev_list_entry *file_loop, *file_tmp;
1745 struct token end_token;
1747 rules = malloc(sizeof(struct udev_rules));
1750 memset(rules, 0x00, sizeof(struct udev_rules));
1752 rules->resolve_names = resolve_names;
1753 udev_list_init(&file_list);
1755 /* init token array and string buffer */
1756 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1757 if (rules->tokens == NULL)
1759 rules->token_max = PREALLOC_TOKEN;
1761 rules->buf = malloc(PREALLOC_STRBUF);
1762 if (rules->buf == NULL)
1764 rules->buf_max = PREALLOC_STRBUF;
1765 /* offset 0 is always '\0' */
1766 rules->buf[0] = '\0';
1768 dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1769 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1771 rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node));
1772 if (rules->trie_nodes == NULL)
1774 rules->trie_nodes_max = PREALLOC_TRIE;
1775 /* offset 0 is the trie root, with an empty string */
1776 memset(rules->trie_nodes, 0x00, sizeof(struct trie_node));
1777 rules->trie_nodes_cur = 1;
1779 if (udev_get_rules_path(udev) != NULL) {
1780 /* custom rules location for testing */
1781 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1783 char filename[PATH_MAX];
1784 struct udev_list_node sort_list;
1785 struct udev_list_entry *sort_loop, *sort_tmp;
1787 /* read user/custom rules */
1788 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1790 /* read dynamic/temporary rules */
1791 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/rules.d", NULL);
1792 udev_list_init(&sort_list);
1793 add_matching_files(udev, &sort_list, filename, ".rules");
1795 /* read default rules */
1796 add_matching_files(udev, &sort_list, LIBEXECDIR "/rules.d", ".rules");
1798 /* sort all rules files by basename into list of files */
1799 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1800 const char *sort_name = udev_list_entry_get_name(sort_loop);
1801 const char *sort_base = strrchr(sort_name, '/');
1803 if (sort_base == NULL)
1805 /* sort entry into existing list */
1806 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1807 const char *file_name = udev_list_entry_get_name(file_loop);
1808 const char *file_base = strrchr(file_name, '/');
1810 if (file_base == NULL)
1812 if (strcmp(file_base, sort_base) == 0) {
1813 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1814 file_name, sort_name);
1815 udev_list_entry_delete(sort_loop);
1819 if (strcmp(file_base, sort_base) > 0) {
1820 /* found later file, insert before */
1821 udev_list_entry_remove(sort_loop);
1822 udev_list_entry_insert_before(sort_loop, file_loop);
1827 /* current file already handled */
1828 if (sort_loop == NULL)
1830 /* no later file, append to end of list */
1831 udev_list_entry_remove(sort_loop);
1832 udev_list_entry_append(sort_loop, &file_list);
1836 /* add all filenames to the string buffer */
1837 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1838 const char *filename = udev_list_entry_get_name(file_loop);
1839 unsigned int filename_off;
1841 filename_off = add_string(rules, filename);
1842 /* the offset in the rule is limited to unsigned short */
1843 if (filename_off < USHRT_MAX)
1844 udev_list_entry_set_flags(file_loop, filename_off);
1847 /* parse list of files */
1848 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1849 const char *filename = udev_list_entry_get_name(file_loop);
1850 unsigned int filename_off = udev_list_entry_get_flags(file_loop);
1852 if (stat(filename, &statbuf) == 0 && statbuf.st_size > 0)
1853 parse_file(rules, filename, filename_off);
1855 err(udev, "can not read '%s'\n", filename);
1856 udev_list_entry_delete(file_loop);
1859 memset(&end_token, 0x00, sizeof(struct token));
1860 end_token.type = TK_END;
1861 add_token(rules, &end_token);
1863 /* shrink allocated token and string buffer */
1864 if (rules->token_cur < rules->token_max) {
1865 struct token *tokens;
1867 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1868 if (tokens != NULL || rules->token_cur == 0) {
1869 rules->tokens = tokens;
1870 rules->token_max = rules->token_cur;
1873 if (rules->buf_cur < rules->buf_max) {
1876 buf = realloc(rules->buf, rules->buf_cur);
1877 if (buf != NULL || rules->buf_cur == 0) {
1879 rules->buf_max = rules->buf_cur;
1882 info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1883 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1884 info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n",
1885 rules->trie_nodes_cur * sizeof(struct trie_node),
1886 rules->trie_nodes_cur, sizeof(struct trie_node));
1889 free(rules->trie_nodes);
1890 rules->trie_nodes = NULL;
1891 rules->trie_nodes_cur = 0;
1892 rules->trie_nodes_max = 0;
1894 /* cleanup uid/gid cache */
1897 rules->uids_cur = 0;
1898 rules->uids_max = 0;
1901 rules->gids_cur = 0;
1902 rules->gids_max = 0;
1908 void udev_rules_unref(struct udev_rules *rules)
1912 free(rules->tokens);
1914 free(rules->trie_nodes);
1920 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1922 char *key_value = &rules->buf[token->key.value_off];
1929 switch (token->key.glob) {
1931 match = (strcmp(key_value, val) == 0);
1934 match = (fnmatch(key_value, val, 0) == 0);
1941 split = &rules->buf[token->key.value_off];
1946 next = strchr(split, '|');
1948 size_t matchlen = (size_t)(next - split);
1950 match = (matchlen == len && strncmp(split, val, matchlen) == 0);
1954 match = (strcmp(split, val) == 0);
1963 char value[UTIL_PATH_SIZE];
1965 util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]);
1967 while (key_value != NULL) {
1968 pos = strchr(key_value, '|');
1973 dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val);
1974 match = (fnmatch(key_value, val, 0) == 0);
1982 match = (val[0] != '\0');
1988 if (match && (token->key.op == OP_MATCH)) {
1989 dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type));
1992 if (!match && (token->key.op == OP_NOMATCH)) {
1993 dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type));
1996 dbg(rules->udev, "%s is not true\n", token_str(token->type));
2000 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
2003 char nbuf[UTIL_NAME_SIZE];
2005 char vbuf[UTIL_NAME_SIZE];
2008 name = &rules->buf[cur->key.attr_off];
2009 switch (cur->key.attrsubst) {
2011 udev_event_apply_format(event, name, nbuf, sizeof(nbuf));
2015 value = udev_device_get_sysattr_value(dev, name);
2020 if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0)
2028 /* remove trailing whitespace, if not asked to match for it */
2029 len = strlen(value);
2030 if (len > 0 && isspace(value[len-1])) {
2031 const char *key_value;
2034 key_value = &rules->buf[cur->key.value_off];
2035 klen = strlen(key_value);
2036 if (klen > 0 && !isspace(key_value[klen-1])) {
2037 if (value != vbuf) {
2038 util_strscpy(vbuf, sizeof(vbuf), value);
2041 while (len > 0 && isspace(vbuf[--len]))
2043 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
2047 return match_key(rules, cur, value);
2056 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
2060 enum escape_type esc = ESCAPE_UNSET;
2063 if (rules->tokens == NULL)
2066 can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) &&
2067 (major(udev_device_get_devnum(event->dev)) > 0 ||
2068 strcmp(udev_device_get_subsystem(event->dev), "net") == 0));
2070 /* loop through token list, match, run actions or forward to next rule */
2071 cur = &rules->tokens[0];
2074 dump_token(rules, cur);
2075 switch (cur->type) {
2079 /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
2080 if (!can_set_name && rule->rule.can_set_name)
2085 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
2089 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
2093 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
2098 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
2099 struct udev_list_entry *list_entry;
2102 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
2103 const char *devlink;
2105 devlink = &udev_list_entry_get_name(list_entry)[devlen];
2106 if (match_key(rules, cur, devlink) == 0) {
2116 if (match_key(rules, cur, event->name) != 0)
2121 const char *key_name = &rules->buf[cur->key.attr_off];
2124 value = udev_device_get_property_value(event->dev, key_name);
2125 if (value == NULL) {
2126 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
2129 if (match_key(rules, cur, value))
2135 struct udev_list_entry *list_entry;
2138 udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) {
2139 if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) {
2144 if (!match && (cur->key.op != OP_NOMATCH))
2148 case TK_M_SUBSYSTEM:
2149 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
2153 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
2158 char filename[UTIL_PATH_SIZE];
2161 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2162 found = (wait_for_file(event->dev, filename, 10) == 0);
2163 if (!found && (cur->key.op != OP_NOMATCH))
2168 if (match_attr(rules, event->dev, event, cur) != 0)
2172 case TK_M_SUBSYSTEMS:
2178 /* get whole sequence of parent matches */
2180 while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
2183 /* loop over parents */
2184 event->dev_parent = event->dev;
2188 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
2189 /* loop over sequence of parent match keys */
2190 for (key = cur; key < next; key++ ) {
2191 dump_token(rules, key);
2194 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
2197 case TK_M_SUBSYSTEMS:
2198 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
2202 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
2206 if (match_attr(rules, event->dev_parent, event, key) != 0)
2212 dbg(event->udev, "parent key matched\n");
2214 dbg(event->udev, "all parent keys matched\n");
2215 /* all keys matched */
2219 event->dev_parent = udev_device_get_parent(event->dev_parent);
2220 if (event->dev_parent == NULL)
2223 /* move behind our sequence of parent match keys */
2229 char filename[UTIL_PATH_SIZE];
2230 struct stat statbuf;
2233 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2234 if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) {
2235 if (filename[0] != '/') {
2236 char tmp[UTIL_PATH_SIZE];
2238 util_strscpy(tmp, sizeof(tmp), filename);
2239 util_strscpyl(filename, sizeof(filename),
2240 udev_device_get_syspath(event->dev), "/", tmp, NULL);
2243 attr_subst_subdir(filename, sizeof(filename));
2245 match = (stat(filename, &statbuf) == 0);
2246 dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
2247 if (match && cur->key.mode > 0) {
2248 match = ((statbuf.st_mode & cur->key.mode) > 0);
2249 dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
2250 match ? "matches" : "does not match", cur->key.mode);
2252 if (match && cur->key.op == OP_NOMATCH)
2254 if (!match && cur->key.op == OP_MATCH)
2260 char program[UTIL_PATH_SIZE];
2262 char result[UTIL_PATH_SIZE];
2264 free(event->program_result);
2265 event->program_result = NULL;
2266 udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program));
2267 envp = udev_device_get_properties_envp(event->dev);
2268 info(event->udev, "PROGRAM '%s' %s:%u\n",
2270 &rules->buf[rule->rule.filename_off],
2271 rule->rule.filename_line);
2272 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL, NULL, false) != 0) {
2273 if (cur->key.op != OP_NOMATCH)
2278 util_remove_trailing_chars(result, '\n');
2279 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2280 count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
2282 info(event->udev, "%i character(s) replaced\n" , count);
2284 event->program_result = strdup(result);
2285 dbg(event->udev, "storing result '%s'\n", event->program_result);
2286 if (cur->key.op == OP_NOMATCH)
2291 case TK_M_IMPORT_FILE:
2293 char import[UTIL_PATH_SIZE];
2295 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2296 if (import_file_into_properties(event->dev, import) != 0)
2297 if (cur->key.op != OP_NOMATCH)
2301 case TK_M_IMPORT_PROG:
2303 char import[UTIL_PATH_SIZE];
2305 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2306 info(event->udev, "IMPORT '%s' %s:%u\n",
2308 &rules->buf[rule->rule.filename_off],
2309 rule->rule.filename_line);
2310 if (import_program_into_properties(event->dev, import) != 0)
2311 if (cur->key.op != OP_NOMATCH)
2315 case TK_M_IMPORT_DB:
2317 const char *key = &rules->buf[cur->key.value_off];
2320 value = udev_device_get_property_value(event->dev_db, key);
2321 if (value != NULL) {
2322 struct udev_list_entry *entry;
2324 entry = udev_device_add_property(event->dev, key, value);
2325 udev_list_entry_set_flags(entry, 1);
2327 if (cur->key.op != OP_NOMATCH)
2332 case TK_M_IMPORT_PARENT:
2334 char import[UTIL_PATH_SIZE];
2336 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2337 if (import_parent_into_properties(event->dev, import) != 0)
2338 if (cur->key.op != OP_NOMATCH)
2343 if (match_key(rules, cur, event->program_result) != 0)
2346 case TK_A_STRING_ESCAPE_NONE:
2349 case TK_A_STRING_ESCAPE_REPLACE:
2350 esc = ESCAPE_REPLACE;
2352 case TK_A_INOTIFY_WATCH:
2353 event->inotify_watch = cur->key.watch;
2355 case TK_A_DEVLINK_PRIO:
2356 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2360 char owner[UTIL_NAME_SIZE];
2362 if (event->owner_final)
2364 if (cur->key.op == OP_ASSIGN_FINAL)
2365 event->owner_final = true;
2366 udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner));
2367 event->uid = util_lookup_user(event->udev, owner);
2368 info(event->udev, "OWNER %u %s:%u\n",
2370 &rules->buf[rule->rule.filename_off],
2371 rule->rule.filename_line);
2376 char group[UTIL_NAME_SIZE];
2378 if (event->group_final)
2380 if (cur->key.op == OP_ASSIGN_FINAL)
2381 event->group_final = true;
2382 udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group));
2383 event->gid = util_lookup_group(event->udev, group);
2384 info(event->udev, "GROUP %u %s:%u\n",
2386 &rules->buf[rule->rule.filename_off],
2387 rule->rule.filename_line);
2392 char mode[UTIL_NAME_SIZE];
2395 if (event->mode_final)
2397 if (cur->key.op == OP_ASSIGN_FINAL)
2398 event->mode_final = true;
2399 udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode, sizeof(mode));
2400 event->mode = strtol(mode, &endptr, 8);
2401 if (endptr[0] != '\0') {
2402 err(event->udev, "invalide mode '%s' set default mode 0600\n", mode);
2405 info(event->udev, "MODE %#o %s:%u\n",
2407 &rules->buf[rule->rule.filename_off],
2408 rule->rule.filename_line);
2412 if (event->owner_final)
2414 if (cur->key.op == OP_ASSIGN_FINAL)
2415 event->owner_final = true;
2416 event->uid = cur->key.uid;
2417 info(event->udev, "OWNER %u %s:%u\n",
2419 &rules->buf[rule->rule.filename_off],
2420 rule->rule.filename_line);
2423 if (event->group_final)
2425 if (cur->key.op == OP_ASSIGN_FINAL)
2426 event->group_final = true;
2427 event->gid = cur->key.gid;
2428 info(event->udev, "GROUP %u %s:%u\n",
2430 &rules->buf[rule->rule.filename_off],
2431 rule->rule.filename_line);
2434 if (event->mode_final)
2436 if (cur->key.op == OP_ASSIGN_FINAL)
2437 event->mode_final = true;
2438 event->mode = cur->key.mode;
2439 info(event->udev, "MODE %#o %s:%u\n",
2441 &rules->buf[rule->rule.filename_off],
2442 rule->rule.filename_line);
2444 case TK_A_STATIC_NODE:
2448 const char *name = &rules->buf[cur->key.attr_off];
2449 char *value = &rules->buf[cur->key.value_off];
2451 if (value[0] != '\0') {
2452 char temp_value[UTIL_NAME_SIZE];
2453 struct udev_list_entry *entry;
2455 udev_event_apply_format(event, value, temp_value, sizeof(temp_value));
2456 entry = udev_device_add_property(event->dev, name, temp_value);
2457 /* store in db, skip private keys */
2459 udev_list_entry_set_flags(entry, 1);
2461 udev_device_add_property(event->dev, name, NULL);
2466 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2467 udev_device_cleanup_tags_list(event->dev);
2468 udev_device_add_tag(event->dev, &rules->buf[cur->key.value_off]);
2472 const char *name = &rules->buf[cur->key.value_off];
2473 char name_str[UTIL_PATH_SIZE];
2476 if (event->name_final)
2478 if (cur->key.op == OP_ASSIGN_FINAL)
2479 event->name_final = true;
2480 udev_event_apply_format(event, name, name_str, sizeof(name_str));
2481 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2482 count = udev_util_replace_chars(name_str, "/");
2484 info(event->udev, "%i character(s) replaced\n", count);
2487 event->name = strdup(name_str);
2488 info(event->udev, "NAME '%s' %s:%u\n",
2490 &rules->buf[rule->rule.filename_off],
2491 rule->rule.filename_line);
2496 char temp[UTIL_PATH_SIZE];
2497 char filename[UTIL_PATH_SIZE];
2501 if (event->devlink_final)
2503 if (major(udev_device_get_devnum(event->dev)) == 0)
2505 if (cur->key.op == OP_ASSIGN_FINAL)
2506 event->devlink_final = true;
2507 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2508 udev_device_cleanup_devlinks_list(event->dev);
2510 /* allow multiple symlinks separated by spaces */
2511 udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp));
2512 if (esc == ESCAPE_UNSET)
2513 count = udev_util_replace_chars(temp, "/ ");
2514 else if (esc == ESCAPE_REPLACE)
2515 count = udev_util_replace_chars(temp, "/");
2517 info(event->udev, "%i character(s) replaced\n" , count);
2518 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2520 while (isspace(pos[0]))
2522 next = strchr(pos, ' ');
2523 while (next != NULL) {
2525 info(event->udev, "LINK '%s' %s:%u\n", pos,
2526 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2527 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2528 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2529 while (isspace(next[1]))
2532 next = strchr(pos, ' ');
2534 if (pos[0] != '\0') {
2535 info(event->udev, "LINK '%s' %s:%u\n", pos,
2536 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2537 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2538 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2542 case TK_A_EVENT_TIMEOUT:
2543 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2547 const char *key_name = &rules->buf[cur->key.attr_off];
2548 char attr[UTIL_PATH_SIZE];
2549 char value[UTIL_NAME_SIZE];
2552 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
2553 util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
2554 attr_subst_subdir(attr, sizeof(attr));
2556 udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value));
2557 info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value,
2558 &rules->buf[rule->rule.filename_off],
2559 rule->rule.filename_line);
2560 f = fopen(attr, "w");
2562 if (fprintf(f, "%s", value) <= 0)
2563 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2566 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2572 struct udev_list_entry *list_entry;
2574 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2575 udev_list_cleanup_entries(event->udev, &event->run_list);
2576 info(event->udev, "RUN '%s' %s:%u\n",
2577 &rules->buf[cur->key.value_off],
2578 &rules->buf[rule->rule.filename_off],
2579 rule->rule.filename_line);
2580 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2581 &rules->buf[cur->key.value_off], NULL, 1, 0);
2582 if (cur->key.fail_on_error)
2583 udev_list_entry_set_flags(list_entry, 1);
2587 if (cur->key.rule_goto == 0)
2589 cur = &rules->tokens[cur->key.rule_goto];
2594 case TK_M_PARENTS_MIN:
2595 case TK_M_PARENTS_MAX:
2598 err(rules->udev, "wrong type %u\n", cur->type);
2605 /* fast-forward to next rule */
2606 cur = rule + rule->rule.token_count;
2607 dbg(rules->udev, "forward to rule: %u\n",
2608 (unsigned int) (cur - rules->tokens));
2612 void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
2620 if (rules->tokens == NULL)
2623 cur = &rules->tokens[0];
2626 switch (cur->type) {
2631 /* skip rules without a static_node tag */
2632 if (!rule->rule.has_static_node)
2646 mode = cur->key.mode;
2648 case TK_A_STATIC_NODE: {
2649 char filename[UTIL_PATH_SIZE];
2651 /* we assure, that the permissions tokens are sorted before the static token */
2652 if (mode == 0 && uid == 0 && gid == 0)
2654 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/",
2655 &rules->buf[cur->key.value_off], NULL);
2656 if (stat(filename, &stats) != 0)
2658 if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
2660 if (mode != 0 && mode != (stats.st_mode & 0777)) {
2661 chmod(filename, mode);
2662 info(rules->udev, "chmod '%s' %#o\n", filename, mode);
2664 if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
2665 chown(filename, uid, gid);
2666 info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid);
2668 utimensat(AT_FDCWD, filename, NULL, 0);
2678 /* fast-forward to next rule */
2679 cur = rule + rule->rule.token_count;