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 */
142 TK_M_TEST, /* val, mode_t */
143 TK_M_EVENT_TIMEOUT, /* int */
144 TK_M_PROGRAM, /* val */
145 TK_M_IMPORT_FILE, /* val */
146 TK_M_IMPORT_PROG, /* val */
147 TK_M_IMPORT_DB, /* val */
148 TK_M_IMPORT_CMDLINE, /* val */
149 TK_M_IMPORT_PARENT, /* val */
150 TK_M_RESULT, /* val */
153 TK_A_STRING_ESCAPE_NONE,
154 TK_A_STRING_ESCAPE_REPLACE,
156 TK_A_INOTIFY_WATCH, /* int */
157 TK_A_DEVLINK_PRIO, /* int */
158 TK_A_OWNER, /* val */
159 TK_A_GROUP, /* val */
161 TK_A_OWNER_ID, /* uid_t */
162 TK_A_GROUP_ID, /* gid_t */
163 TK_A_MODE_ID, /* mode_t */
164 TK_A_STATIC_NODE, /* val */
165 TK_A_ENV, /* val, attr */
168 TK_A_DEVLINK, /* val */
169 TK_A_ATTR, /* val, attr */
170 TK_A_RUN, /* val, bool */
171 TK_A_GOTO, /* size_t */
176 /* we try to pack stuff in a way that we take only 12 bytes per token */
179 unsigned char type; /* same in rule and key */
181 enum token_type type:8;
183 bool has_static_node:1;
184 unsigned int unused:6;
185 unsigned short token_count;
186 unsigned int label_off;
187 unsigned short filename_off;
188 unsigned short filename_line;
191 enum token_type type:8;
192 enum operation_type op:8;
193 enum string_glob_type glob:8;
194 enum string_subst_type subst:4;
195 enum string_subst_type attrsubst:4;
196 unsigned int value_off;
198 unsigned int attr_off;
201 unsigned int rule_goto;
215 struct udev_rules *rules;
217 struct token token[MAX_TK];
218 unsigned int token_cur;
222 static const char *operation_str(enum operation_type type)
224 static const char *operation_strs[] = {
225 [OP_UNSET] = "UNSET",
226 [OP_MATCH] = "match",
227 [OP_NOMATCH] = "nomatch",
228 [OP_MATCH_MAX] = "MATCH_MAX",
231 [OP_ASSIGN] = "assign",
232 [OP_ASSIGN_FINAL] = "assign-final",
235 return operation_strs[type];
238 static const char *string_glob_str(enum string_glob_type type)
240 static const char *string_glob_strs[] = {
241 [GL_UNSET] = "UNSET",
242 [GL_PLAIN] = "plain",
244 [GL_SPLIT] = "split",
245 [GL_SPLIT_GLOB] = "split-glob",
246 [GL_SOMETHING] = "split-glob",
249 return string_glob_strs[type];
252 static const char *token_str(enum token_type type)
254 static const char *token_strs[] = {
255 [TK_UNSET] = "UNSET",
258 [TK_M_ACTION] = "M ACTION",
259 [TK_M_DEVPATH] = "M DEVPATH",
260 [TK_M_KERNEL] = "M KERNEL",
261 [TK_M_DEVLINK] = "M DEVLINK",
262 [TK_M_NAME] = "M NAME",
263 [TK_M_ENV] = "M ENV",
264 [TK_M_TAG] = "M TAG",
265 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
266 [TK_M_DRIVER] = "M DRIVER",
267 [TK_M_WAITFOR] = "M WAITFOR",
268 [TK_M_ATTR] = "M ATTR",
270 [TK_M_PARENTS_MIN] = "M PARENTS_MIN",
271 [TK_M_KERNELS] = "M KERNELS",
272 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
273 [TK_M_DRIVERS] = "M DRIVERS",
274 [TK_M_ATTRS] = "M ATTRS",
275 [TK_M_TAGS] = "M TAGS",
276 [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
278 [TK_M_TEST] = "M TEST",
279 [TK_M_EVENT_TIMEOUT] = "M EVENT_TIMEOUT",
280 [TK_M_PROGRAM] = "M PROGRAM",
281 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
282 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
283 [TK_M_IMPORT_DB] = "M IMPORT_DB",
284 [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE",
285 [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT",
286 [TK_M_RESULT] = "M RESULT",
287 [TK_M_MAX] = "M MAX",
289 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
290 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
291 [TK_A_DB_PERSIST] = "A DB_PERSIST",
292 [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH",
293 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
294 [TK_A_OWNER] = "A OWNER",
295 [TK_A_GROUP] = "A GROUP",
296 [TK_A_MODE] = "A MODE",
297 [TK_A_OWNER_ID] = "A OWNER_ID",
298 [TK_A_GROUP_ID] = "A GROUP_ID",
299 [TK_A_STATIC_NODE] = "A STATIC_NODE",
300 [TK_A_MODE_ID] = "A MODE_ID",
301 [TK_A_ENV] = "A ENV",
302 [TK_A_TAG] = "A ENV",
303 [TK_A_NAME] = "A NAME",
304 [TK_A_DEVLINK] = "A DEVLINK",
305 [TK_A_ATTR] = "A ATTR",
306 [TK_A_RUN] = "A RUN",
307 [TK_A_GOTO] = "A GOTO",
312 return token_strs[type];
315 static void dump_token(struct udev_rules *rules, struct token *token)
317 enum token_type type = token->type;
318 enum operation_type op = token->key.op;
319 enum string_glob_type glob = token->key.glob;
320 const char *value = &rules->buf[token->key.value_off];
321 const char *attr = &rules->buf[token->key.attr_off];
326 const char *tks_ptr = (char *)rules->tokens;
327 const char *tk_ptr = (char *)token;
328 unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token);
330 dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s'\n",
331 &rules->buf[token->rule.filename_off], token->rule.filename_line,
332 idx, token->rule.token_count,
333 &rules->buf[token->rule.label_off]);
345 case TK_M_SUBSYSTEMS:
349 case TK_M_IMPORT_FILE:
350 case TK_M_IMPORT_PROG:
352 case TK_M_IMPORT_CMDLINE:
353 case TK_M_IMPORT_PARENT:
361 dbg(rules->udev, "%s %s '%s'(%s)\n",
362 token_str(type), operation_str(op), value, string_glob_str(glob));
369 dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
370 token_str(type), operation_str(op), attr, value, string_glob_str(glob));
374 dbg(rules->udev, "%s %s '%s'\n", token_str(type), operation_str(op), value);
376 case TK_A_STRING_ESCAPE_NONE:
377 case TK_A_STRING_ESCAPE_REPLACE:
378 case TK_A_DB_PERSIST:
379 dbg(rules->udev, "%s\n", token_str(type));
382 dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
383 token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
385 case TK_A_INOTIFY_WATCH:
386 dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch);
388 case TK_A_DEVLINK_PRIO:
389 dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio);
392 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid);
395 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid);
398 dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode);
400 case TK_A_STATIC_NODE:
401 dbg(rules->udev, "%s '%s'\n", token_str(type), value);
403 case TK_M_EVENT_TIMEOUT:
404 dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout);
407 dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto);
410 dbg(rules->udev, "* %s\n", token_str(type));
412 case TK_M_PARENTS_MIN:
413 case TK_M_PARENTS_MAX:
416 dbg(rules->udev, "unknown type %u\n", type);
421 static void dump_rules(struct udev_rules *rules)
425 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
427 rules->token_cur * sizeof(struct token),
430 for(i = 0; i < rules->token_cur; i++)
431 dump_token(rules, &rules->tokens[i]);
434 static inline const char *operation_str(enum operation_type type) { return NULL; }
435 static inline const char *token_str(enum token_type type) { return NULL; }
436 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
437 static inline void dump_rules(struct udev_rules *rules) {}
438 #endif /* ENABLE_DEBUG */
440 static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes)
444 /* grow buffer if needed */
445 if (rules->buf_cur + bytes+1 >= rules->buf_max) {
449 /* double the buffer size */
450 add = rules->buf_max;
454 buf = realloc(rules->buf, rules->buf_max + add);
457 dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
459 rules->buf_max += add;
461 off = rules->buf_cur;
462 memcpy(&rules->buf[rules->buf_cur], str, bytes);
463 rules->buf_cur += bytes;
468 static int add_string(struct udev_rules *rules, const char *str)
470 unsigned int node_idx;
471 struct trie_node *new_node;
472 unsigned int new_node_idx;
477 struct trie_node *parent;
479 /* walk trie, start from last character of str to find matching tails */
483 for (depth = 0; depth <= len; depth++) {
484 struct trie_node *node;
485 unsigned int child_idx;
487 node = &rules->trie_nodes[node_idx];
488 off = node->value_off + node->value_len - len;
490 /* match against current node */
491 if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0))
494 /* lookup child node */
495 key = str[len - 1 - depth];
496 child_idx = node->child_idx;
497 while (child_idx > 0) {
498 struct trie_node *child;
500 child = &rules->trie_nodes[child_idx];
501 if (child->key == key)
503 child_idx = child->next_child_idx;
507 node_idx = child_idx;
510 /* string not found, add it */
511 off = add_new_string(rules, str, len + 1);
513 /* grow trie nodes if needed */
514 if (rules->trie_nodes_cur >= rules->trie_nodes_max) {
515 struct trie_node *nodes;
518 /* double the buffer size */
519 add = rules->trie_nodes_max;
523 nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node));
526 dbg(rules->udev, "extend trie nodes from %u to %u\n",
527 rules->trie_nodes_max, rules->trie_nodes_max + add);
528 rules->trie_nodes = nodes;
529 rules->trie_nodes_max += add;
533 new_node_idx = rules->trie_nodes_cur;
534 rules->trie_nodes_cur++;
535 new_node = &rules->trie_nodes[new_node_idx];
536 memset(new_node, 0x00, sizeof(struct trie_node));
537 new_node->value_off = off;
538 new_node->value_len = len;
541 /* join the parent's child list */
542 parent = &rules->trie_nodes[node_idx];
543 if (parent->child_idx == 0) {
544 parent->child_idx = new_node_idx;
546 struct trie_node *last_child;
548 last_child = &rules->trie_nodes[parent->last_child_idx];
549 last_child->next_child_idx = new_node_idx;
551 parent->last_child_idx = new_node_idx;
555 static int add_token(struct udev_rules *rules, struct token *token)
557 /* grow buffer if needed */
558 if (rules->token_cur+1 >= rules->token_max) {
559 struct token *tokens;
562 /* double the buffer size */
563 add = rules->token_max;
567 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
570 dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
571 rules->tokens = tokens;
572 rules->token_max += add;
574 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
579 static uid_t add_uid(struct udev_rules *rules, const char *owner)
585 /* lookup, if we know it already */
586 for (i = 0; i < rules->uids_cur; i++) {
587 off = rules->uids[i].name_off;
588 if (strcmp(&rules->buf[off], owner) == 0) {
589 uid = rules->uids[i].uid;
590 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
594 uid = util_lookup_user(rules->udev, owner);
596 /* grow buffer if needed */
597 if (rules->uids_cur+1 >= rules->uids_max) {
598 struct uid_gid *uids;
601 /* double the buffer size */
602 add = rules->uids_max;
606 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
609 dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
611 rules->uids_max += add;
613 rules->uids[rules->uids_cur].uid = uid;
614 off = add_string(rules, owner);
617 rules->uids[rules->uids_cur].name_off = off;
622 static gid_t add_gid(struct udev_rules *rules, const char *group)
628 /* lookup, if we know it already */
629 for (i = 0; i < rules->gids_cur; i++) {
630 off = rules->gids[i].name_off;
631 if (strcmp(&rules->buf[off], group) == 0) {
632 gid = rules->gids[i].gid;
633 dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
637 gid = util_lookup_group(rules->udev, group);
639 /* grow buffer if needed */
640 if (rules->gids_cur+1 >= rules->gids_max) {
641 struct uid_gid *gids;
644 /* double the buffer size */
645 add = rules->gids_max;
649 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
652 dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
654 rules->gids_max += add;
656 rules->gids[rules->gids_cur].gid = gid;
657 off = add_string(rules, group);
660 rules->gids[rules->gids_cur].name_off = off;
665 static int import_property_from_string(struct udev_device *dev, char *line)
667 struct udev *udev = udev_device_get_udev(dev);
674 while (isspace(key[0]))
677 /* comment or empty line */
678 if (key[0] == '#' || key[0] == '\0')
681 /* split key/value */
682 val = strchr(key, '=');
689 while (isspace(val[0]))
696 while (isspace(key[len-1]))
700 /* terminate value */
704 while (isspace(val[len-1]))
712 if (val[0] == '"' || val[0] == '\'') {
713 if (val[len-1] != val[0]) {
714 info(udev, "inconsistent quoting: '%s', skip\n", line);
721 dbg(udev, "adding '%s'='%s'\n", key, val);
723 /* handle device, renamed by external tool, returning new path */
724 if (strcmp(key, "DEVPATH") == 0) {
725 char syspath[UTIL_PATH_SIZE];
727 info(udev, "updating devpath from '%s' to '%s'\n",
728 udev_device_get_devpath(dev), val);
729 util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL);
730 udev_device_set_syspath(dev, syspath);
732 struct udev_list_entry *entry;
734 entry = udev_device_add_property(dev, key, val);
735 /* store in db, skip private keys */
737 udev_list_entry_set_num(entry, true);
742 static int import_file_into_properties(struct udev_device *dev, const char *filename)
745 char line[UTIL_LINE_SIZE];
747 f = fopen(filename, "r");
750 while (fgets(line, sizeof(line), f) != NULL)
751 import_property_from_string(dev, line);
756 static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask)
758 struct udev_device *dev = event->dev;
760 char result[UTIL_LINE_SIZE];
764 envp = udev_device_get_properties_envp(dev);
765 err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result));
770 while (line != NULL) {
773 pos = strchr(line, '\n');
778 import_property_from_string(dev, line);
784 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
786 struct udev *udev = udev_device_get_udev(dev);
787 struct udev_device *dev_parent;
788 struct udev_list_entry *list_entry;
790 dev_parent = udev_device_get_parent(dev);
791 if (dev_parent == NULL)
794 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
795 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
796 const char *key = udev_list_entry_get_name(list_entry);
797 const char *val = udev_list_entry_get_value(list_entry);
799 if (fnmatch(filter, key, 0) == 0) {
800 struct udev_list_entry *entry;
802 dbg(udev, "import key '%s=%s'\n", key, val);
803 entry = udev_device_add_property(dev, key, val);
804 /* store in db, skip private keys */
806 udev_list_entry_set_num(entry, true);
812 #define WAIT_LOOP_PER_SECOND 50
813 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
815 struct udev *udev = udev_device_get_udev(dev);
816 char filepath[UTIL_PATH_SIZE];
817 char devicepath[UTIL_PATH_SIZE];
819 int loop = timeout * WAIT_LOOP_PER_SECOND;
821 /* a relative path is a device attribute */
822 devicepath[0] = '\0';
823 if (file[0] != '/') {
824 util_strscpyl(devicepath, sizeof(devicepath),
825 udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL);
826 util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
830 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
832 const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND };
835 if (stat(file, &stats) == 0) {
836 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
839 /* make sure, the device did not disappear in the meantime */
840 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
841 info(udev, "device disappeared while waiting for '%s'\n", file);
844 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
845 nanosleep(&duration, NULL);
847 info(udev, "waiting for '%s' failed\n", file);
851 static int attr_subst_subdir(char *attr, size_t len)
855 if (strstr(attr, "/*/")) {
857 char dirname[UTIL_PATH_SIZE];
861 util_strscpy(dirname, sizeof(dirname), attr);
862 pos = strstr(dirname, "/*/");
867 dir = opendir(dirname);
871 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
874 if (dent->d_name[0] == '.')
876 util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
877 if (stat(attr, &stats) == 0) {
889 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
895 if (linepos == NULL || linepos[0] == '\0')
898 /* skip whitespace */
899 while (isspace(linepos[0]) || linepos[0] == ',')
903 if (linepos[0] == '\0')
909 if (linepos[0] == '\0')
911 if (isspace(linepos[0]))
913 if (linepos[0] == '=')
915 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
916 if (linepos[1] == '=')
920 /* remember end of key */
923 /* skip whitespace after key */
924 while (isspace(linepos[0]))
926 if (linepos[0] == '\0')
929 /* get operation type */
930 if (linepos[0] == '=' && linepos[1] == '=') {
933 } else if (linepos[0] == '!' && linepos[1] == '=') {
936 } else if (linepos[0] == '+' && linepos[1] == '=') {
939 } else if (linepos[0] == '=') {
942 } else if (linepos[0] == ':' && linepos[1] == '=') {
943 *op = OP_ASSIGN_FINAL;
951 /* skip whitespace after operator */
952 while (isspace(linepos[0]))
954 if (linepos[0] == '\0')
958 if (linepos[0] == '"')
965 temp = strchr(linepos, '"');
970 dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value);
972 /* move line to next key */
977 /* extract possible KEY{attr} */
978 static char *get_key_attribute(struct udev *udev, char *str)
983 attr = strchr(str, '{');
986 pos = strchr(attr, '}');
988 err(udev, "missing closing brace for format\n");
992 dbg(udev, "attribute='%s'\n", attr);
998 static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
999 enum operation_type op,
1000 const char *value, const void *data)
1002 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
1003 const char *attr = NULL;
1005 memset(token, 0x00, sizeof(struct token));
1011 case TK_M_SUBSYSTEM:
1017 case TK_M_SUBSYSTEMS:
1021 case TK_M_IMPORT_FILE:
1022 case TK_M_IMPORT_PROG:
1023 case TK_M_IMPORT_DB:
1024 case TK_M_IMPORT_CMDLINE:
1025 case TK_M_IMPORT_PARENT:
1034 token->key.value_off = add_string(rule_tmp->rules, value);
1042 token->key.value_off = add_string(rule_tmp->rules, value);
1043 token->key.attr_off = add_string(rule_tmp->rules, attr);
1046 token->key.value_off = add_string(rule_tmp->rules, value);
1047 token->key.devlink_unique = *(int *)data;
1050 token->key.value_off = add_string(rule_tmp->rules, value);
1052 token->key.mode = *(mode_t *)data;
1054 case TK_A_STRING_ESCAPE_NONE:
1055 case TK_A_STRING_ESCAPE_REPLACE:
1056 case TK_A_DB_PERSIST:
1059 token->key.value_off = add_string(rule_tmp->rules, value);
1060 token->key.fail_on_error = *(int *)data;
1062 case TK_A_INOTIFY_WATCH:
1063 case TK_A_DEVLINK_PRIO:
1064 token->key.devlink_prio = *(int *)data;
1067 token->key.uid = *(uid_t *)data;
1070 token->key.gid = *(gid_t *)data;
1073 token->key.mode = *(mode_t *)data;
1075 case TK_A_STATIC_NODE:
1076 token->key.value_off = add_string(rule_tmp->rules, value);
1078 case TK_M_EVENT_TIMEOUT:
1079 token->key.event_timeout = *(int *)data;
1082 case TK_M_PARENTS_MIN:
1083 case TK_M_PARENTS_MAX:
1087 err(rule_tmp->rules->udev, "wrong type %u\n", type);
1091 if (value != NULL && type < TK_M_MAX) {
1092 /* check if we need to split or call fnmatch() while matching rules */
1093 enum string_glob_type glob;
1097 has_split = (strchr(value, '|') != NULL);
1098 has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL);
1099 if (has_split && has_glob) {
1100 glob = GL_SPLIT_GLOB;
1101 } else if (has_split) {
1103 } else if (has_glob) {
1104 if (strcmp(value, "?*") == 0)
1105 glob = GL_SOMETHING;
1111 token->key.glob = glob;
1114 if (value != NULL && type > TK_M_MAX) {
1115 /* check if assigned value has substitution chars */
1116 if (value[0] == '[')
1117 token->key.subst = SB_SUBSYS;
1118 else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
1119 token->key.subst = SB_FORMAT;
1121 token->key.subst = SB_NONE;
1125 /* check if property/attribut name has substitution chars */
1127 token->key.attrsubst = SB_SUBSYS;
1128 else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL)
1129 token->key.attrsubst = SB_FORMAT;
1131 token->key.attrsubst = SB_NONE;
1134 token->key.type = type;
1136 rule_tmp->token_cur++;
1137 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
1138 err(rule_tmp->rules->udev, "temporary rule array too small\n");
1144 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
1147 unsigned int start = 0;
1148 unsigned int end = rule_tmp->token_cur;
1150 for (i = 0; i < rule_tmp->token_cur; i++) {
1151 enum token_type next_val = TK_UNSET;
1152 unsigned int next_idx = 0;
1155 /* find smallest value */
1156 for (j = start; j < end; j++) {
1157 if (rule_tmp->token[j].type == TK_UNSET)
1159 if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
1160 next_val = rule_tmp->token[j].type;
1165 /* add token and mark done */
1166 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
1168 rule_tmp->token[next_idx].type = TK_UNSET;
1171 if (next_idx == start)
1173 if (next_idx+1 == end)
1179 static int add_rule(struct udev_rules *rules, char *line,
1180 const char *filename, unsigned int filename_off, unsigned int lineno)
1184 struct rule_tmp rule_tmp;
1185 bool bus_warn = false;
1186 bool sysfs_warn = false;
1187 bool id_warn = false;
1189 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
1190 rule_tmp.rules = rules;
1191 rule_tmp.rule.type = TK_RULE;
1192 rule_tmp.rule.rule.filename_off = filename_off;
1193 rule_tmp.rule.rule.filename_line = lineno;
1199 enum operation_type op;
1201 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
1204 if (strcmp(key, "ACTION") == 0) {
1205 if (op > OP_MATCH_MAX) {
1206 err(rules->udev, "invalid ACTION operation\n");
1209 rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
1213 if (strcmp(key, "DEVPATH") == 0) {
1214 if (op > OP_MATCH_MAX) {
1215 err(rules->udev, "invalid DEVPATH operation\n");
1218 rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
1222 if (strcmp(key, "KERNEL") == 0) {
1223 if (op > OP_MATCH_MAX) {
1224 err(rules->udev, "invalid KERNEL operation\n");
1227 rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
1231 if (strcmp(key, "SUBSYSTEM") == 0) {
1232 if (op > OP_MATCH_MAX) {
1233 err(rules->udev, "invalid SUBSYSTEM operation\n");
1236 /* bus, class, subsystem events should all be the same */
1237 if (strcmp(value, "subsystem") == 0 ||
1238 strcmp(value, "bus") == 0 ||
1239 strcmp(value, "class") == 0) {
1240 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1241 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1242 "please fix it in %s:%u", value, filename, lineno);
1243 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1245 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1249 if (strcmp(key, "DRIVER") == 0) {
1250 if (op > OP_MATCH_MAX) {
1251 err(rules->udev, "invalid DRIVER operation\n");
1254 rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1258 if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1259 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1261 err(rules->udev, "error parsing ATTR attribute\n");
1264 if (op < OP_MATCH_MAX) {
1265 rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
1267 rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
1272 if (strcmp(key, "KERNELS") == 0) {
1273 if (op > OP_MATCH_MAX) {
1274 err(rules->udev, "invalid KERNELS operation\n");
1277 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1281 if (strcmp(key, "ID") == 0) {
1284 err(rules->udev, "ID= will be removed in a future udev version, "
1285 "please use KERNEL= to match the event device, or KERNELS= "
1286 "to match a parent device, in %s:%u\n", filename, lineno);
1288 if (op > OP_MATCH_MAX) {
1289 err(rules->udev, "invalid KERNELS operation\n");
1292 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1296 if (strcmp(key, "SUBSYSTEMS") == 0) {
1297 if (op > OP_MATCH_MAX) {
1298 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1301 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1305 if (strcmp(key, "BUS") == 0) {
1308 err(rules->udev, "BUS= will be removed in a future udev version, "
1309 "please use SUBSYSTEM= to match the event device, or SUBSYSTEMS= "
1310 "to match a parent device, in %s:%u\n", filename, lineno);
1312 if (op > OP_MATCH_MAX) {
1313 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1316 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1320 if (strcmp(key, "DRIVERS") == 0) {
1321 if (op > OP_MATCH_MAX) {
1322 err(rules->udev, "invalid DRIVERS operation\n");
1325 rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1329 if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) {
1330 if (op > OP_MATCH_MAX) {
1331 err(rules->udev, "invalid ATTRS operation\n");
1334 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1336 err(rules->udev, "error parsing ATTRS attribute\n");
1339 if (strncmp(attr, "device/", 7) == 0)
1340 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1341 "please fix it in %s:%u", filename, lineno);
1342 else if (strstr(attr, "../") != NULL)
1343 err(rules->udev, "do not reference parent sysfs directories directly, "
1344 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1345 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1349 if (strcmp(key, "TAGS") == 0) {
1350 if (op > OP_MATCH_MAX) {
1351 err(rules->udev, "invalid TAGS operation\n");
1354 rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL);
1358 if (strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1361 err(rules->udev, "SYSFS{}= will be removed in a future udev version, "
1362 "please use ATTR{}= to match the event device, or ATTRS{}= "
1363 "to match a parent device, in %s:%u\n", filename, lineno);
1365 if (op > OP_MATCH_MAX) {
1366 err(rules->udev, "invalid ATTRS operation\n");
1369 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1371 err(rules->udev, "error parsing ATTRS attribute\n");
1374 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1378 if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1379 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1381 err(rules->udev, "error parsing ENV attribute\n");
1384 if (op < OP_MATCH_MAX) {
1385 if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1388 static const char *blacklist[] = {
1403 for (i = 0; i < ARRAY_SIZE(blacklist); i++)
1404 if (strcmp(attr, blacklist[i]) == 0) {
1405 err(rules->udev, "invalid ENV attribute, '%s' can not be set %s:%u\n", attr, filename, lineno);
1408 if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1414 if (strcmp(key, "TAG") == 0) {
1415 if (op < OP_MATCH_MAX)
1416 rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
1418 rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
1422 if (strcmp(key, "PROGRAM") == 0) {
1423 rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1427 if (strcmp(key, "RESULT") == 0) {
1428 if (op > OP_MATCH_MAX) {
1429 err(rules->udev, "invalid RESULT operation\n");
1432 rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
1436 if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1437 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1438 if (attr != NULL && strstr(attr, "program")) {
1439 dbg(rules->udev, "IMPORT will be executed\n");
1440 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1441 } else if (attr != NULL && strstr(attr, "file")) {
1442 dbg(rules->udev, "IMPORT will be included as file\n");
1443 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1444 } else if (attr != NULL && strstr(attr, "db")) {
1445 dbg(rules->udev, "IMPORT will include db values\n");
1446 rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
1447 } else if (attr != NULL && strstr(attr, "cmdline")) {
1448 dbg(rules->udev, "IMPORT will include db values\n");
1449 rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL);
1450 } else if (attr != NULL && strstr(attr, "parent")) {
1451 dbg(rules->udev, "IMPORT will include the parent values\n");
1452 rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1454 /* figure it out if it is executable */
1455 char file[UTIL_PATH_SIZE];
1457 struct stat statbuf;
1459 /* allow programs in /lib/udev called without the path */
1460 if (value[0] != '/')
1461 util_strscpyl(file, sizeof(file), LIBEXECDIR "/", value, NULL);
1463 util_strscpy(file, sizeof(file), value);
1464 pos = strchr(file, ' ');
1467 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1468 if (stat(file, &statbuf) == 0 && (statbuf.st_mode & S_IXUSR)) {
1469 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1470 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1472 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1473 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1479 if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) {
1482 if (op > OP_MATCH_MAX) {
1483 err(rules->udev, "invalid TEST operation\n");
1486 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1488 mode = strtol(attr, NULL, 8);
1489 rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
1491 rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
1496 if (strncmp(key, "RUN", sizeof("RUN")-1) == 0) {
1499 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1500 if (attr != NULL && strstr(attr, "fail_event_on_error"))
1502 rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag);
1506 if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) {
1507 rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1511 if (strcmp(key, "LABEL") == 0) {
1512 rule_tmp.rule.rule.label_off = add_string(rules, value);
1516 if (strcmp(key, "GOTO") == 0) {
1517 rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1521 if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) {
1522 if (op < OP_MATCH_MAX) {
1523 rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
1525 if (strcmp(value, "%k") == 0) {
1526 err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, "
1527 "please remove it from %s:%u\n", filename, lineno);
1530 if (value[0] == '\0') {
1531 info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, "
1532 "please remove it from %s:%u\n", filename, lineno);
1535 rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
1537 rule_tmp.rule.rule.can_set_name = true;
1541 if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) {
1542 if (op < OP_MATCH_MAX) {
1543 rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1547 attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1);
1548 if (attr != NULL && strstr(attr, "unique") != NULL)
1550 rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag);
1552 rule_tmp.rule.rule.can_set_name = true;
1556 if (strcmp(key, "OWNER") == 0) {
1560 uid = strtoul(value, &endptr, 10);
1561 if (endptr[0] == '\0') {
1562 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1563 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1564 uid = add_uid(rules, value);
1565 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1566 } else if (rules->resolve_names >= 0) {
1567 rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
1569 rule_tmp.rule.rule.can_set_name = true;
1573 if (strcmp(key, "GROUP") == 0) {
1577 gid = strtoul(value, &endptr, 10);
1578 if (endptr[0] == '\0') {
1579 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1580 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1581 gid = add_gid(rules, value);
1582 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1583 } else if (rules->resolve_names >= 0) {
1584 rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
1586 rule_tmp.rule.rule.can_set_name = true;
1590 if (strcmp(key, "MODE") == 0) {
1594 mode = strtol(value, &endptr, 8);
1595 if (endptr[0] == '\0')
1596 rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1598 rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
1599 rule_tmp.rule.rule.can_set_name = true;
1603 if (strcmp(key, "OPTIONS") == 0) {
1606 pos = strstr(value, "link_priority=");
1608 int prio = atoi(&pos[strlen("link_priority=")]);
1610 rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio);
1611 dbg(rules->udev, "link priority=%i\n", prio);
1614 pos = strstr(value, "event_timeout=");
1616 int tout = atoi(&pos[strlen("event_timeout=")]);
1618 rule_add_key(&rule_tmp, TK_M_EVENT_TIMEOUT, op, NULL, &tout);
1619 dbg(rules->udev, "event timeout=%i\n", tout);
1622 pos = strstr(value, "string_escape=");
1624 pos = &pos[strlen("string_escape=")];
1625 if (strncmp(pos, "none", strlen("none")) == 0)
1626 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL);
1627 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1628 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL);
1631 pos = strstr(value, "db_persist");
1633 rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL);
1635 pos = strstr(value, "nowatch");
1639 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off);
1640 dbg(rules->udev, "inotify watch of device disabled\n");
1642 pos = strstr(value, "watch");
1646 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on);
1647 dbg(rules->udev, "inotify watch of device requested\n");
1651 pos = strstr(value, "static_node=");
1653 rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL);
1654 rule_tmp.rule.rule.has_static_node = true;
1659 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1662 /* add rule token */
1663 rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
1664 if (add_token(rules, &rule_tmp.rule) != 0)
1667 /* add tokens to list, sorted by type */
1668 if (sort_token(rules, &rule_tmp) != 0)
1673 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1677 static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
1680 unsigned int first_token;
1681 char line[UTIL_LINE_SIZE];
1685 info(rules->udev, "reading '%s' as rules file\n", filename);
1687 f = fopen(filename, "r");
1691 first_token = rules->token_cur;
1693 while (fgets(line, sizeof(line), f) != NULL) {
1697 /* skip whitespace */
1700 while (isspace(key[0]))
1711 /* continue reading if backslash+newline is found */
1712 while (line[len-2] == '\\') {
1713 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1715 if (strlen(&line[len-2]) < 2)
1721 if (len+1 >= sizeof(line)) {
1722 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1725 add_rule(rules, key, filename, filename_off, line_nr);
1729 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1730 for (i = first_token+1; i < rules->token_cur; i++) {
1731 if (rules->tokens[i].type == TK_A_GOTO) {
1732 char *label = &rules->buf[rules->tokens[i].key.value_off];
1735 for (j = i+1; j < rules->token_cur; j++) {
1736 if (rules->tokens[j].type != TK_RULE)
1738 if (rules->tokens[j].rule.label_off == 0)
1740 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1742 rules->tokens[i].key.rule_goto = j;
1745 if (rules->tokens[i].key.rule_goto == 0)
1746 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1752 static int add_matching_files(struct udev *udev, struct udev_list *file_list, const char *dirname, const char *suffix)
1755 struct dirent *dent;
1756 char filename[UTIL_PATH_SIZE];
1758 dbg(udev, "open directory '%s'\n", dirname);
1759 dir = opendir(dirname);
1761 info(udev, "unable to open '%s': %m\n", dirname);
1765 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
1766 if (dent->d_name[0] == '.')
1769 /* look for file matching with specified suffix */
1770 if (suffix != NULL) {
1773 ext = strrchr(dent->d_name, '.');
1776 if (strcmp(ext, suffix) != 0)
1779 util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL);
1780 dbg(udev, "put file '%s' into list\n", filename);
1782 * the basename is the key, the filename the value
1783 * identical basenames from different directories overwrite each other
1784 * entries are sorted after basename
1786 udev_list_entry_add(file_list, dent->d_name, filename);
1793 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1795 struct udev_rules *rules;
1796 struct udev_list file_list;
1797 struct udev_list_entry *file_loop;
1798 struct token end_token;
1800 rules = calloc(1, sizeof(struct udev_rules));
1804 rules->resolve_names = resolve_names;
1805 udev_list_init(udev, &file_list, true);
1807 /* init token array and string buffer */
1808 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1809 if (rules->tokens == NULL) {
1813 rules->token_max = PREALLOC_TOKEN;
1815 rules->buf = malloc(PREALLOC_STRBUF);
1816 if (rules->buf == NULL) {
1817 free(rules->tokens);
1821 rules->buf_max = PREALLOC_STRBUF;
1822 /* offset 0 is always '\0' */
1823 rules->buf[0] = '\0';
1825 dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1826 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1828 rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node));
1829 if (rules->trie_nodes == NULL) {
1831 free(rules->tokens);
1835 rules->trie_nodes_max = PREALLOC_TRIE;
1836 /* offset 0 is the trie root, with an empty string */
1837 memset(rules->trie_nodes, 0x00, sizeof(struct trie_node));
1838 rules->trie_nodes_cur = 1;
1840 if (udev_get_rules_path(udev) == NULL) {
1841 char filename[UTIL_PATH_SIZE];
1843 /* /lib/udev -- default/package rules */
1844 add_matching_files(udev, &file_list, LIBEXECDIR "/rules.d", ".rules");
1846 /* /etc/udev -- system-specific/user/admin rules */
1847 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1849 /* /run/udev -- throw-away/temporary rules */
1850 util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/rules.d", NULL);
1851 add_matching_files(udev, &file_list, filename, ".rules");
1853 /* custom rules files location for testing */
1854 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1857 /* add all filenames to the string buffer */
1858 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1859 const char *filename = udev_list_entry_get_value(file_loop);
1860 unsigned int filename_off;
1862 filename_off = add_string(rules, filename);
1863 /* the offset in the rule is limited to unsigned short */
1864 if (filename_off < USHRT_MAX)
1865 udev_list_entry_set_num(file_loop, filename_off);
1868 /* parse all rules files */
1869 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1870 const char *filename = udev_list_entry_get_value(file_loop);
1871 unsigned int filename_off = udev_list_entry_get_num(file_loop);
1874 if (stat(filename, &st) != 0) {
1875 err(udev, "can not find '%s': %m\n", filename);
1878 if (S_ISREG(st.st_mode) && st.st_size <= 0) {
1879 info(udev, "ignore empty '%s'\n", filename);
1882 if (S_ISCHR(st.st_mode)) {
1883 info(udev, "ignore masked '%s'\n", filename);
1886 parse_file(rules, filename, filename_off);
1888 udev_list_cleanup(&file_list);
1890 memset(&end_token, 0x00, sizeof(struct token));
1891 end_token.type = TK_END;
1892 add_token(rules, &end_token);
1894 /* shrink allocated token and string buffer */
1895 if (rules->token_cur < rules->token_max) {
1896 struct token *tokens;
1898 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1899 if (tokens != NULL || rules->token_cur == 0) {
1900 rules->tokens = tokens;
1901 rules->token_max = rules->token_cur;
1904 if (rules->buf_cur < rules->buf_max) {
1907 buf = realloc(rules->buf, rules->buf_cur);
1908 if (buf != NULL || rules->buf_cur == 0) {
1910 rules->buf_max = rules->buf_cur;
1913 info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1914 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1915 info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n",
1916 rules->trie_nodes_cur * sizeof(struct trie_node),
1917 rules->trie_nodes_cur, sizeof(struct trie_node));
1920 free(rules->trie_nodes);
1921 rules->trie_nodes = NULL;
1922 rules->trie_nodes_cur = 0;
1923 rules->trie_nodes_max = 0;
1925 /* cleanup uid/gid cache */
1928 rules->uids_cur = 0;
1929 rules->uids_max = 0;
1932 rules->gids_cur = 0;
1933 rules->gids_max = 0;
1939 void udev_rules_unref(struct udev_rules *rules)
1943 free(rules->tokens);
1945 free(rules->trie_nodes);
1951 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1953 char *key_value = &rules->buf[token->key.value_off];
1960 switch (token->key.glob) {
1962 match = (strcmp(key_value, val) == 0);
1965 match = (fnmatch(key_value, val, 0) == 0);
1972 split = &rules->buf[token->key.value_off];
1977 next = strchr(split, '|');
1979 size_t matchlen = (size_t)(next - split);
1981 match = (matchlen == len && strncmp(split, val, matchlen) == 0);
1985 match = (strcmp(split, val) == 0);
1994 char value[UTIL_PATH_SIZE];
1996 util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]);
1998 while (key_value != NULL) {
1999 pos = strchr(key_value, '|');
2004 dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val);
2005 match = (fnmatch(key_value, val, 0) == 0);
2013 match = (val[0] != '\0');
2019 if (match && (token->key.op == OP_MATCH)) {
2020 dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type));
2023 if (!match && (token->key.op == OP_NOMATCH)) {
2024 dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type));
2027 dbg(rules->udev, "%s is not true\n", token_str(token->type));
2031 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
2034 char nbuf[UTIL_NAME_SIZE];
2036 char vbuf[UTIL_NAME_SIZE];
2039 name = &rules->buf[cur->key.attr_off];
2040 switch (cur->key.attrsubst) {
2042 udev_event_apply_format(event, name, nbuf, sizeof(nbuf));
2046 value = udev_device_get_sysattr_value(dev, name);
2051 if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0)
2059 /* remove trailing whitespace, if not asked to match for it */
2060 len = strlen(value);
2061 if (len > 0 && isspace(value[len-1])) {
2062 const char *key_value;
2065 key_value = &rules->buf[cur->key.value_off];
2066 klen = strlen(key_value);
2067 if (klen > 0 && !isspace(key_value[klen-1])) {
2068 if (value != vbuf) {
2069 util_strscpy(vbuf, sizeof(vbuf), value);
2072 while (len > 0 && isspace(vbuf[--len]))
2074 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
2078 return match_key(rules, cur, value);
2087 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask)
2091 enum escape_type esc = ESCAPE_UNSET;
2094 if (rules->tokens == NULL)
2097 can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) &&
2098 (major(udev_device_get_devnum(event->dev)) > 0 ||
2099 udev_device_get_ifindex(event->dev) > 0));
2101 /* loop through token list, match, run actions or forward to next rule */
2102 cur = &rules->tokens[0];
2105 dump_token(rules, cur);
2106 switch (cur->type) {
2110 /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
2111 if (!can_set_name && rule->rule.can_set_name)
2116 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
2120 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
2124 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
2127 case TK_M_DEVLINK: {
2128 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
2129 struct udev_list_entry *list_entry;
2132 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
2133 const char *devlink;
2135 devlink = &udev_list_entry_get_name(list_entry)[devlen];
2136 if (match_key(rules, cur, devlink) == 0) {
2146 if (match_key(rules, cur, event->name) != 0)
2150 const char *key_name = &rules->buf[cur->key.attr_off];
2153 value = udev_device_get_property_value(event->dev, key_name);
2154 if (value == NULL) {
2155 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
2158 if (match_key(rules, cur, value))
2163 struct udev_list_entry *list_entry;
2166 udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) {
2167 if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) {
2172 if (!match && (cur->key.op != OP_NOMATCH))
2176 case TK_M_SUBSYSTEM:
2177 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
2181 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
2184 case TK_M_WAITFOR: {
2185 char filename[UTIL_PATH_SIZE];
2188 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2189 found = (wait_for_file(event->dev, filename, 10) == 0);
2190 if (!found && (cur->key.op != OP_NOMATCH))
2195 if (match_attr(rules, event->dev, event, cur) != 0)
2199 case TK_M_SUBSYSTEMS:
2205 /* get whole sequence of parent matches */
2207 while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
2210 /* loop over parents */
2211 event->dev_parent = event->dev;
2215 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
2216 /* loop over sequence of parent match keys */
2217 for (key = cur; key < next; key++ ) {
2218 dump_token(rules, key);
2221 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
2224 case TK_M_SUBSYSTEMS:
2225 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
2229 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
2233 if (match_attr(rules, event->dev_parent, event, key) != 0)
2237 bool match = udev_device_has_tag(event->dev_parent, &rules->buf[cur->key.value_off]);
2239 if (match && key->key.op == OP_NOMATCH)
2241 if (!match && key->key.op == OP_MATCH)
2248 dbg(event->udev, "parent key matched\n");
2250 dbg(event->udev, "all parent keys matched\n");
2254 event->dev_parent = udev_device_get_parent(event->dev_parent);
2255 if (event->dev_parent == NULL)
2258 /* move behind our sequence of parent match keys */
2263 char filename[UTIL_PATH_SIZE];
2264 struct stat statbuf;
2267 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2268 if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) {
2269 if (filename[0] != '/') {
2270 char tmp[UTIL_PATH_SIZE];
2272 util_strscpy(tmp, sizeof(tmp), filename);
2273 util_strscpyl(filename, sizeof(filename),
2274 udev_device_get_syspath(event->dev), "/", tmp, NULL);
2277 attr_subst_subdir(filename, sizeof(filename));
2279 match = (stat(filename, &statbuf) == 0);
2280 dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
2281 if (match && cur->key.mode > 0) {
2282 match = ((statbuf.st_mode & cur->key.mode) > 0);
2283 dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
2284 match ? "matches" : "does not match", cur->key.mode);
2286 if (match && cur->key.op == OP_NOMATCH)
2288 if (!match && cur->key.op == OP_MATCH)
2292 case TK_M_EVENT_TIMEOUT:
2293 info(event->udev, "OPTIONS event_timeout=%u\n", cur->key.event_timeout);
2294 event->timeout_usec = cur->key.event_timeout * 1000 * 1000;
2296 case TK_M_PROGRAM: {
2297 char program[UTIL_PATH_SIZE];
2299 char result[UTIL_PATH_SIZE];
2301 free(event->program_result);
2302 event->program_result = NULL;
2303 udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program));
2304 envp = udev_device_get_properties_envp(event->dev);
2305 info(event->udev, "PROGRAM '%s' %s:%u\n",
2307 &rules->buf[rule->rule.filename_off],
2308 rule->rule.filename_line);
2310 if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) {
2311 if (cur->key.op != OP_NOMATCH)
2316 util_remove_trailing_chars(result, '\n');
2317 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2318 count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
2320 info(event->udev, "%i character(s) replaced\n" , count);
2322 event->program_result = strdup(result);
2323 dbg(event->udev, "storing result '%s'\n", event->program_result);
2324 if (cur->key.op == OP_NOMATCH)
2329 case TK_M_IMPORT_FILE: {
2330 char import[UTIL_PATH_SIZE];
2332 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2333 if (import_file_into_properties(event->dev, import) != 0)
2334 if (cur->key.op != OP_NOMATCH)
2338 case TK_M_IMPORT_PROG: {
2339 char import[UTIL_PATH_SIZE];
2341 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2342 info(event->udev, "IMPORT '%s' %s:%u\n",
2344 &rules->buf[rule->rule.filename_off],
2345 rule->rule.filename_line);
2347 if (import_program_into_properties(event, import, sigmask) != 0)
2348 if (cur->key.op != OP_NOMATCH)
2352 case TK_M_IMPORT_DB: {
2353 const char *key = &rules->buf[cur->key.value_off];
2356 value = udev_device_get_property_value(event->dev_db, key);
2357 if (value != NULL) {
2358 struct udev_list_entry *entry;
2360 entry = udev_device_add_property(event->dev, key, value);
2361 udev_list_entry_set_num(entry, true);
2363 if (cur->key.op != OP_NOMATCH)
2368 case TK_M_IMPORT_CMDLINE: {
2370 bool imported = false;
2372 f = fopen("/proc/cmdline", "r");
2376 if (fgets(cmdline, sizeof(cmdline), f) != NULL) {
2377 const char *key = &rules->buf[cur->key.value_off];
2380 pos = strstr(cmdline, key);
2382 struct udev_list_entry *entry;
2385 if (pos[0] == '\0' || isspace(pos[0])) {
2386 /* we import simple flags as 'FLAG=1' */
2387 entry = udev_device_add_property(event->dev, key, "1");
2388 udev_list_entry_set_num(entry, true);
2390 } else if (pos[0] == '=') {
2395 while (pos[0] != '\0' && !isspace(pos[0]))
2398 entry = udev_device_add_property(event->dev, key, value);
2399 udev_list_entry_set_num(entry, true);
2406 if (!imported && cur->key.op != OP_NOMATCH)
2410 case TK_M_IMPORT_PARENT: {
2411 char import[UTIL_PATH_SIZE];
2413 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2414 if (import_parent_into_properties(event->dev, import) != 0)
2415 if (cur->key.op != OP_NOMATCH)
2420 if (match_key(rules, cur, event->program_result) != 0)
2423 case TK_A_STRING_ESCAPE_NONE:
2426 case TK_A_STRING_ESCAPE_REPLACE:
2427 esc = ESCAPE_REPLACE;
2429 case TK_A_DB_PERSIST:
2430 udev_device_set_db_persist(event->dev);
2432 case TK_A_INOTIFY_WATCH:
2433 if (event->inotify_watch_final)
2435 if (cur->key.op == OP_ASSIGN_FINAL)
2436 event->inotify_watch_final = true;
2437 event->inotify_watch = cur->key.watch;
2439 case TK_A_DEVLINK_PRIO:
2440 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2443 char owner[UTIL_NAME_SIZE];
2445 if (event->owner_final)
2447 if (cur->key.op == OP_ASSIGN_FINAL)
2448 event->owner_final = true;
2449 udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner));
2450 event->uid = util_lookup_user(event->udev, owner);
2451 info(event->udev, "OWNER %u %s:%u\n",
2453 &rules->buf[rule->rule.filename_off],
2454 rule->rule.filename_line);
2458 char group[UTIL_NAME_SIZE];
2460 if (event->group_final)
2462 if (cur->key.op == OP_ASSIGN_FINAL)
2463 event->group_final = true;
2464 udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group));
2465 event->gid = util_lookup_group(event->udev, group);
2466 info(event->udev, "GROUP %u %s:%u\n",
2468 &rules->buf[rule->rule.filename_off],
2469 rule->rule.filename_line);
2473 char mode_str[UTIL_NAME_SIZE];
2477 if (event->mode_final)
2479 udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode_str, sizeof(mode_str));
2480 mode = strtol(mode_str, &endptr, 8);
2481 if (endptr[0] != '\0') {
2482 err(event->udev, "ignoring invalid mode '%s'\n", mode_str);
2485 if (cur->key.op == OP_ASSIGN_FINAL)
2486 event->mode_final = true;
2487 event->mode_set = true;
2489 info(event->udev, "MODE %#o %s:%u\n",
2491 &rules->buf[rule->rule.filename_off],
2492 rule->rule.filename_line);
2496 if (event->owner_final)
2498 if (cur->key.op == OP_ASSIGN_FINAL)
2499 event->owner_final = true;
2500 event->uid = cur->key.uid;
2501 info(event->udev, "OWNER %u %s:%u\n",
2503 &rules->buf[rule->rule.filename_off],
2504 rule->rule.filename_line);
2507 if (event->group_final)
2509 if (cur->key.op == OP_ASSIGN_FINAL)
2510 event->group_final = true;
2511 event->gid = cur->key.gid;
2512 info(event->udev, "GROUP %u %s:%u\n",
2514 &rules->buf[rule->rule.filename_off],
2515 rule->rule.filename_line);
2518 if (event->mode_final)
2520 if (cur->key.op == OP_ASSIGN_FINAL)
2521 event->mode_final = true;
2522 event->mode_set = true;
2523 event->mode = cur->key.mode;
2524 info(event->udev, "MODE %#o %s:%u\n",
2526 &rules->buf[rule->rule.filename_off],
2527 rule->rule.filename_line);
2529 case TK_A_STATIC_NODE:
2532 const char *name = &rules->buf[cur->key.attr_off];
2533 char *value = &rules->buf[cur->key.value_off];
2535 if (value[0] != '\0') {
2536 char temp_value[UTIL_NAME_SIZE];
2537 struct udev_list_entry *entry;
2539 udev_event_apply_format(event, value, temp_value, sizeof(temp_value));
2540 entry = udev_device_add_property(event->dev, name, temp_value);
2541 /* store in db, skip private keys */
2543 udev_list_entry_set_num(entry, true);
2545 udev_device_add_property(event->dev, name, NULL);
2550 char tag[UTIL_PATH_SIZE];
2553 udev_event_apply_format(event, &rules->buf[cur->key.value_off], tag, sizeof(tag));
2554 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2555 udev_device_cleanup_tags_list(event->dev);
2556 for (p = tag; *p != '\0'; p++) {
2557 if ((*p >= 'a' && *p <= 'z') ||
2558 (*p >= 'A' && *p <= 'Z') ||
2559 (*p >= '0' && *p <= '9') ||
2560 *p == '-' || *p == '_')
2562 err(event->udev, "ignoring invalid tag name '%s'\n", tag);
2565 udev_device_add_tag(event->dev, tag);
2569 const char *name = &rules->buf[cur->key.value_off];
2570 char name_str[UTIL_PATH_SIZE];
2573 if (event->name_final)
2575 if (cur->key.op == OP_ASSIGN_FINAL)
2576 event->name_final = true;
2577 udev_event_apply_format(event, name, name_str, sizeof(name_str));
2578 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2579 count = udev_util_replace_chars(name_str, "/");
2581 info(event->udev, "%i character(s) replaced\n", count);
2584 event->name = strdup(name_str);
2585 info(event->udev, "NAME '%s' %s:%u\n",
2587 &rules->buf[rule->rule.filename_off],
2588 rule->rule.filename_line);
2591 case TK_A_DEVLINK: {
2592 char temp[UTIL_PATH_SIZE];
2593 char filename[UTIL_PATH_SIZE];
2597 if (event->devlink_final)
2599 if (major(udev_device_get_devnum(event->dev)) == 0)
2601 if (cur->key.op == OP_ASSIGN_FINAL)
2602 event->devlink_final = true;
2603 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2604 udev_device_cleanup_devlinks_list(event->dev);
2606 /* allow multiple symlinks separated by spaces */
2607 udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp));
2608 if (esc == ESCAPE_UNSET)
2609 count = udev_util_replace_chars(temp, "/ ");
2610 else if (esc == ESCAPE_REPLACE)
2611 count = udev_util_replace_chars(temp, "/");
2613 info(event->udev, "%i character(s) replaced\n" , count);
2614 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2616 while (isspace(pos[0]))
2618 next = strchr(pos, ' ');
2619 while (next != NULL) {
2621 info(event->udev, "LINK '%s' %s:%u\n", pos,
2622 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2623 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2624 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2625 while (isspace(next[1]))
2628 next = strchr(pos, ' ');
2630 if (pos[0] != '\0') {
2631 info(event->udev, "LINK '%s' %s:%u\n", pos,
2632 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2633 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2634 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2639 const char *key_name = &rules->buf[cur->key.attr_off];
2640 char attr[UTIL_PATH_SIZE];
2641 char value[UTIL_NAME_SIZE];
2644 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
2645 util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
2646 attr_subst_subdir(attr, sizeof(attr));
2648 udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value));
2649 info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value,
2650 &rules->buf[rule->rule.filename_off],
2651 rule->rule.filename_line);
2652 f = fopen(attr, "w");
2654 if (fprintf(f, "%s", value) <= 0)
2655 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2658 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2663 struct udev_list_entry *list_entry;
2665 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2666 udev_list_cleanup(&event->run_list);
2667 info(event->udev, "RUN '%s' %s:%u\n",
2668 &rules->buf[cur->key.value_off],
2669 &rules->buf[rule->rule.filename_off],
2670 rule->rule.filename_line);
2671 list_entry = udev_list_entry_add(&event->run_list, &rules->buf[cur->key.value_off], NULL);
2672 if (cur->key.fail_on_error)
2673 udev_list_entry_set_num(list_entry, true);
2677 if (cur->key.rule_goto == 0)
2679 cur = &rules->tokens[cur->key.rule_goto];
2684 case TK_M_PARENTS_MIN:
2685 case TK_M_PARENTS_MAX:
2688 err(rules->udev, "wrong type %u\n", cur->type);
2695 /* fast-forward to next rule */
2696 cur = rule + rule->rule.token_count;
2697 dbg(rules->udev, "forward to rule: %u\n",
2698 (unsigned int) (cur - rules->tokens));
2702 void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
2710 if (rules->tokens == NULL)
2713 cur = &rules->tokens[0];
2716 switch (cur->type) {
2721 /* skip rules without a static_node tag */
2722 if (!rule->rule.has_static_node)
2736 mode = cur->key.mode;
2738 case TK_A_STATIC_NODE: {
2739 char filename[UTIL_PATH_SIZE];
2742 /* we assure, that the permissions tokens are sorted before the static token */
2743 if (mode == 0 && uid == 0 && gid == 0)
2745 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/",
2746 &rules->buf[cur->key.value_off], NULL);
2747 if (stat(filename, &stats) != 0)
2749 if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
2752 if (mode == 0 && gid > 0)
2754 if (mode != (stats.st_mode & 0777)) {
2755 chmod(filename, mode);
2756 info(rules->udev, "chmod '%s' %#o\n", filename, mode);
2759 if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
2760 chown(filename, uid, gid);
2761 info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid);
2764 utimensat(AT_FDCWD, filename, NULL, 0);
2774 /* fast-forward to next rule */
2775 cur = rule + rule->rule.token_count;