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_EVENT_TIMEOUT, /* int */
143 TK_M_PROGRAM, /* val */
144 TK_M_IMPORT_FILE, /* val */
145 TK_M_IMPORT_PROG, /* val */
146 TK_M_IMPORT_DB, /* val */
147 TK_M_IMPORT_CMDLINE, /* val */
148 TK_M_IMPORT_PARENT, /* val */
149 TK_M_RESULT, /* val */
152 TK_A_STRING_ESCAPE_NONE,
153 TK_A_STRING_ESCAPE_REPLACE,
155 TK_A_INOTIFY_WATCH, /* int */
156 TK_A_DEVLINK_PRIO, /* int */
157 TK_A_OWNER, /* val */
158 TK_A_GROUP, /* val */
160 TK_A_OWNER_ID, /* uid_t */
161 TK_A_GROUP_ID, /* gid_t */
162 TK_A_MODE_ID, /* mode_t */
163 TK_A_STATIC_NODE, /* val */
164 TK_A_ENV, /* val, attr */
167 TK_A_DEVLINK, /* val */
168 TK_A_ATTR, /* val, attr */
169 TK_A_RUN, /* val, bool */
170 TK_A_GOTO, /* size_t */
175 /* we try to pack stuff in a way that we take only 12 bytes per token */
178 unsigned char type; /* same in rule and key */
180 enum token_type type:8;
182 bool has_static_node:1;
183 unsigned int unused:6;
184 unsigned short token_count;
185 unsigned int label_off;
186 unsigned short filename_off;
187 unsigned short filename_line;
190 enum token_type type:8;
191 enum operation_type op:8;
192 enum string_glob_type glob:8;
193 enum string_subst_type subst:4;
194 enum string_subst_type attrsubst:4;
195 unsigned int value_off;
197 unsigned int attr_off;
200 unsigned int rule_goto;
214 struct udev_rules *rules;
216 struct token token[MAX_TK];
217 unsigned int token_cur;
221 static const char *operation_str(enum operation_type type)
223 static const char *operation_strs[] = {
224 [OP_UNSET] = "UNSET",
225 [OP_MATCH] = "match",
226 [OP_NOMATCH] = "nomatch",
227 [OP_MATCH_MAX] = "MATCH_MAX",
230 [OP_ASSIGN] = "assign",
231 [OP_ASSIGN_FINAL] = "assign-final",
234 return operation_strs[type];
237 static const char *string_glob_str(enum string_glob_type type)
239 static const char *string_glob_strs[] = {
240 [GL_UNSET] = "UNSET",
241 [GL_PLAIN] = "plain",
243 [GL_SPLIT] = "split",
244 [GL_SPLIT_GLOB] = "split-glob",
245 [GL_SOMETHING] = "split-glob",
248 return string_glob_strs[type];
251 static const char *token_str(enum token_type type)
253 static const char *token_strs[] = {
254 [TK_UNSET] = "UNSET",
257 [TK_M_ACTION] = "M ACTION",
258 [TK_M_DEVPATH] = "M DEVPATH",
259 [TK_M_KERNEL] = "M KERNEL",
260 [TK_M_DEVLINK] = "M DEVLINK",
261 [TK_M_NAME] = "M NAME",
262 [TK_M_ENV] = "M ENV",
263 [TK_M_TAG] = "M TAG",
264 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
265 [TK_M_DRIVER] = "M DRIVER",
266 [TK_M_WAITFOR] = "M WAITFOR",
267 [TK_M_ATTR] = "M ATTR",
269 [TK_M_PARENTS_MIN] = "M PARENTS_MIN",
270 [TK_M_KERNELS] = "M KERNELS",
271 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
272 [TK_M_DRIVERS] = "M DRIVERS",
273 [TK_M_ATTRS] = "M ATTRS",
274 [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
276 [TK_M_TEST] = "M TEST",
277 [TK_M_EVENT_TIMEOUT] = "M EVENT_TIMEOUT",
278 [TK_M_PROGRAM] = "M PROGRAM",
279 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
280 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
281 [TK_M_IMPORT_DB] = "M IMPORT_DB",
282 [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE",
283 [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT",
284 [TK_M_RESULT] = "M RESULT",
285 [TK_M_MAX] = "M MAX",
287 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
288 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
289 [TK_A_DB_PERSIST] = "A DB_PERSIST",
290 [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH",
291 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
292 [TK_A_OWNER] = "A OWNER",
293 [TK_A_GROUP] = "A GROUP",
294 [TK_A_MODE] = "A MODE",
295 [TK_A_OWNER_ID] = "A OWNER_ID",
296 [TK_A_GROUP_ID] = "A GROUP_ID",
297 [TK_A_STATIC_NODE] = "A STATIC_NODE",
298 [TK_A_MODE_ID] = "A MODE_ID",
299 [TK_A_ENV] = "A ENV",
300 [TK_A_TAG] = "A ENV",
301 [TK_A_NAME] = "A NAME",
302 [TK_A_DEVLINK] = "A DEVLINK",
303 [TK_A_ATTR] = "A ATTR",
304 [TK_A_RUN] = "A RUN",
305 [TK_A_GOTO] = "A GOTO",
310 return token_strs[type];
313 static void dump_token(struct udev_rules *rules, struct token *token)
315 enum token_type type = token->type;
316 enum operation_type op = token->key.op;
317 enum string_glob_type glob = token->key.glob;
318 const char *value = &rules->buf[token->key.value_off];
319 const char *attr = &rules->buf[token->key.attr_off];
324 const char *tks_ptr = (char *)rules->tokens;
325 const char *tk_ptr = (char *)token;
326 unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token);
328 dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s'\n",
329 &rules->buf[token->rule.filename_off], token->rule.filename_line,
330 idx, token->rule.token_count,
331 &rules->buf[token->rule.label_off]);
343 case TK_M_SUBSYSTEMS:
346 case TK_M_IMPORT_FILE:
347 case TK_M_IMPORT_PROG:
349 case TK_M_IMPORT_CMDLINE:
350 case TK_M_IMPORT_PARENT:
358 dbg(rules->udev, "%s %s '%s'(%s)\n",
359 token_str(type), operation_str(op), value, string_glob_str(glob));
366 dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
367 token_str(type), operation_str(op), attr, value, string_glob_str(glob));
371 dbg(rules->udev, "%s %s '%s'\n", token_str(type), operation_str(op), value);
373 case TK_A_STRING_ESCAPE_NONE:
374 case TK_A_STRING_ESCAPE_REPLACE:
375 case TK_A_DB_PERSIST:
376 dbg(rules->udev, "%s\n", token_str(type));
379 dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
380 token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
382 case TK_A_INOTIFY_WATCH:
383 dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch);
385 case TK_A_DEVLINK_PRIO:
386 dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio);
389 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid);
392 dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid);
395 dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode);
397 case TK_A_STATIC_NODE:
398 dbg(rules->udev, "%s '%s'\n", token_str(type), value);
400 case TK_M_EVENT_TIMEOUT:
401 dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout);
404 dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto);
407 dbg(rules->udev, "* %s\n", token_str(type));
409 case TK_M_PARENTS_MIN:
410 case TK_M_PARENTS_MAX:
413 dbg(rules->udev, "unknown type %u\n", type);
418 static void dump_rules(struct udev_rules *rules)
422 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
424 rules->token_cur * sizeof(struct token),
427 for(i = 0; i < rules->token_cur; i++)
428 dump_token(rules, &rules->tokens[i]);
431 static inline const char *operation_str(enum operation_type type) { return NULL; }
432 static inline const char *token_str(enum token_type type) { return NULL; }
433 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
434 static inline void dump_rules(struct udev_rules *rules) {}
435 #endif /* ENABLE_DEBUG */
437 static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes)
441 /* grow buffer if needed */
442 if (rules->buf_cur + bytes+1 >= rules->buf_max) {
446 /* double the buffer size */
447 add = rules->buf_max;
451 buf = realloc(rules->buf, rules->buf_max + add);
454 dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
456 rules->buf_max += add;
458 off = rules->buf_cur;
459 memcpy(&rules->buf[rules->buf_cur], str, bytes);
460 rules->buf_cur += bytes;
465 static int add_string(struct udev_rules *rules, const char *str)
467 unsigned int node_idx;
468 struct trie_node *new_node;
469 unsigned int new_node_idx;
474 struct trie_node *parent;
476 /* walk trie, start from last character of str to find matching tails */
480 for (depth = 0; depth <= len; depth++) {
481 struct trie_node *node;
482 unsigned int child_idx;
484 node = &rules->trie_nodes[node_idx];
485 off = node->value_off + node->value_len - len;
487 /* match against current node */
488 if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0))
491 /* lookup child node */
492 key = str[len - 1 - depth];
493 child_idx = node->child_idx;
494 while (child_idx > 0) {
495 struct trie_node *child;
497 child = &rules->trie_nodes[child_idx];
498 if (child->key == key)
500 child_idx = child->next_child_idx;
504 node_idx = child_idx;
507 /* string not found, add it */
508 off = add_new_string(rules, str, len + 1);
510 /* grow trie nodes if needed */
511 if (rules->trie_nodes_cur >= rules->trie_nodes_max) {
512 struct trie_node *nodes;
515 /* double the buffer size */
516 add = rules->trie_nodes_max;
520 nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node));
523 dbg(rules->udev, "extend trie nodes from %u to %u\n",
524 rules->trie_nodes_max, rules->trie_nodes_max + add);
525 rules->trie_nodes = nodes;
526 rules->trie_nodes_max += add;
530 new_node_idx = rules->trie_nodes_cur;
531 rules->trie_nodes_cur++;
532 new_node = &rules->trie_nodes[new_node_idx];
533 memset(new_node, 0x00, sizeof(struct trie_node));
534 new_node->value_off = off;
535 new_node->value_len = len;
538 /* join the parent's child list */
539 parent = &rules->trie_nodes[node_idx];
540 if (parent->child_idx == 0) {
541 parent->child_idx = new_node_idx;
543 struct trie_node *last_child;
545 last_child = &rules->trie_nodes[parent->last_child_idx];
546 last_child->next_child_idx = new_node_idx;
548 parent->last_child_idx = new_node_idx;
552 static int add_token(struct udev_rules *rules, struct token *token)
554 /* grow buffer if needed */
555 if (rules->token_cur+1 >= rules->token_max) {
556 struct token *tokens;
559 /* double the buffer size */
560 add = rules->token_max;
564 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
567 dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
568 rules->tokens = tokens;
569 rules->token_max += add;
571 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
576 static uid_t add_uid(struct udev_rules *rules, const char *owner)
582 /* lookup, if we know it already */
583 for (i = 0; i < rules->uids_cur; i++) {
584 off = rules->uids[i].name_off;
585 if (strcmp(&rules->buf[off], owner) == 0) {
586 uid = rules->uids[i].uid;
587 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
591 uid = util_lookup_user(rules->udev, owner);
593 /* grow buffer if needed */
594 if (rules->uids_cur+1 >= rules->uids_max) {
595 struct uid_gid *uids;
598 /* double the buffer size */
599 add = rules->uids_max;
603 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
606 dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
608 rules->uids_max += add;
610 rules->uids[rules->uids_cur].uid = uid;
611 off = add_string(rules, owner);
614 rules->uids[rules->uids_cur].name_off = off;
619 static gid_t add_gid(struct udev_rules *rules, const char *group)
625 /* lookup, if we know it already */
626 for (i = 0; i < rules->gids_cur; i++) {
627 off = rules->gids[i].name_off;
628 if (strcmp(&rules->buf[off], group) == 0) {
629 gid = rules->gids[i].gid;
630 dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
634 gid = util_lookup_group(rules->udev, group);
636 /* grow buffer if needed */
637 if (rules->gids_cur+1 >= rules->gids_max) {
638 struct uid_gid *gids;
641 /* double the buffer size */
642 add = rules->gids_max;
646 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
649 dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
651 rules->gids_max += add;
653 rules->gids[rules->gids_cur].gid = gid;
654 off = add_string(rules, group);
657 rules->gids[rules->gids_cur].name_off = off;
662 static int import_property_from_string(struct udev_device *dev, char *line)
664 struct udev *udev = udev_device_get_udev(dev);
671 while (isspace(key[0]))
674 /* comment or empty line */
675 if (key[0] == '#' || key[0] == '\0')
678 /* split key/value */
679 val = strchr(key, '=');
686 while (isspace(val[0]))
693 while (isspace(key[len-1]))
697 /* terminate value */
701 while (isspace(val[len-1]))
709 if (val[0] == '"' || val[0] == '\'') {
710 if (val[len-1] != val[0]) {
711 info(udev, "inconsistent quoting: '%s', skip\n", line);
718 dbg(udev, "adding '%s'='%s'\n", key, val);
720 /* handle device, renamed by external tool, returning new path */
721 if (strcmp(key, "DEVPATH") == 0) {
722 char syspath[UTIL_PATH_SIZE];
724 info(udev, "updating devpath from '%s' to '%s'\n",
725 udev_device_get_devpath(dev), val);
726 util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL);
727 udev_device_set_syspath(dev, syspath);
729 struct udev_list_entry *entry;
731 entry = udev_device_add_property(dev, key, val);
732 /* store in db, skip private keys */
734 udev_list_entry_set_num(entry, true);
739 static int import_file_into_properties(struct udev_device *dev, const char *filename)
742 char line[UTIL_LINE_SIZE];
744 f = fopen(filename, "r");
747 while (fgets(line, sizeof(line), f) != NULL)
748 import_property_from_string(dev, line);
753 static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask)
755 struct udev_device *dev = event->dev;
757 char result[UTIL_LINE_SIZE];
761 envp = udev_device_get_properties_envp(dev);
762 err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result));
767 while (line != NULL) {
770 pos = strchr(line, '\n');
775 import_property_from_string(dev, line);
781 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
783 struct udev *udev = udev_device_get_udev(dev);
784 struct udev_device *dev_parent;
785 struct udev_list_entry *list_entry;
787 dev_parent = udev_device_get_parent(dev);
788 if (dev_parent == NULL)
791 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
792 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
793 const char *key = udev_list_entry_get_name(list_entry);
794 const char *val = udev_list_entry_get_value(list_entry);
796 if (fnmatch(filter, key, 0) == 0) {
797 struct udev_list_entry *entry;
799 dbg(udev, "import key '%s=%s'\n", key, val);
800 entry = udev_device_add_property(dev, key, val);
801 /* store in db, skip private keys */
803 udev_list_entry_set_num(entry, true);
809 #define WAIT_LOOP_PER_SECOND 50
810 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
812 struct udev *udev = udev_device_get_udev(dev);
813 char filepath[UTIL_PATH_SIZE];
814 char devicepath[UTIL_PATH_SIZE];
816 int loop = timeout * WAIT_LOOP_PER_SECOND;
818 /* a relative path is a device attribute */
819 devicepath[0] = '\0';
820 if (file[0] != '/') {
821 util_strscpyl(devicepath, sizeof(devicepath),
822 udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL);
823 util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
827 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
829 const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND };
832 if (stat(file, &stats) == 0) {
833 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
836 /* make sure, the device did not disappear in the meantime */
837 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
838 info(udev, "device disappeared while waiting for '%s'\n", file);
841 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
842 nanosleep(&duration, NULL);
844 info(udev, "waiting for '%s' failed\n", file);
848 static int attr_subst_subdir(char *attr, size_t len)
852 if (strstr(attr, "/*/")) {
854 char dirname[UTIL_PATH_SIZE];
858 util_strscpy(dirname, sizeof(dirname), attr);
859 pos = strstr(dirname, "/*/");
864 dir = opendir(dirname);
868 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
871 if (dent->d_name[0] == '.')
873 util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
874 if (stat(attr, &stats) == 0) {
886 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
892 if (linepos == NULL || linepos[0] == '\0')
895 /* skip whitespace */
896 while (isspace(linepos[0]) || linepos[0] == ',')
900 if (linepos[0] == '\0')
906 if (linepos[0] == '\0')
908 if (isspace(linepos[0]))
910 if (linepos[0] == '=')
912 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
913 if (linepos[1] == '=')
917 /* remember end of key */
920 /* skip whitespace after key */
921 while (isspace(linepos[0]))
923 if (linepos[0] == '\0')
926 /* get operation type */
927 if (linepos[0] == '=' && linepos[1] == '=') {
930 } else if (linepos[0] == '!' && linepos[1] == '=') {
933 } else if (linepos[0] == '+' && linepos[1] == '=') {
936 } else if (linepos[0] == '=') {
939 } else if (linepos[0] == ':' && linepos[1] == '=') {
940 *op = OP_ASSIGN_FINAL;
948 /* skip whitespace after operator */
949 while (isspace(linepos[0]))
951 if (linepos[0] == '\0')
955 if (linepos[0] == '"')
962 temp = strchr(linepos, '"');
967 dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value);
969 /* move line to next key */
974 /* extract possible KEY{attr} */
975 static char *get_key_attribute(struct udev *udev, char *str)
980 attr = strchr(str, '{');
983 pos = strchr(attr, '}');
985 err(udev, "missing closing brace for format\n");
989 dbg(udev, "attribute='%s'\n", attr);
995 static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
996 enum operation_type op,
997 const char *value, const void *data)
999 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
1000 const char *attr = NULL;
1002 memset(token, 0x00, sizeof(struct token));
1008 case TK_M_SUBSYSTEM:
1014 case TK_M_SUBSYSTEMS:
1017 case TK_M_IMPORT_FILE:
1018 case TK_M_IMPORT_PROG:
1019 case TK_M_IMPORT_DB:
1020 case TK_M_IMPORT_CMDLINE:
1021 case TK_M_IMPORT_PARENT:
1030 token->key.value_off = add_string(rule_tmp->rules, value);
1038 token->key.value_off = add_string(rule_tmp->rules, value);
1039 token->key.attr_off = add_string(rule_tmp->rules, attr);
1042 token->key.value_off = add_string(rule_tmp->rules, value);
1043 token->key.devlink_unique = *(int *)data;
1046 token->key.value_off = add_string(rule_tmp->rules, value);
1048 token->key.mode = *(mode_t *)data;
1050 case TK_A_STRING_ESCAPE_NONE:
1051 case TK_A_STRING_ESCAPE_REPLACE:
1052 case TK_A_DB_PERSIST:
1055 token->key.value_off = add_string(rule_tmp->rules, value);
1056 token->key.fail_on_error = *(int *)data;
1058 case TK_A_INOTIFY_WATCH:
1059 case TK_A_DEVLINK_PRIO:
1060 token->key.devlink_prio = *(int *)data;
1063 token->key.uid = *(uid_t *)data;
1066 token->key.gid = *(gid_t *)data;
1069 token->key.mode = *(mode_t *)data;
1071 case TK_A_STATIC_NODE:
1072 token->key.value_off = add_string(rule_tmp->rules, value);
1074 case TK_M_EVENT_TIMEOUT:
1075 token->key.event_timeout = *(int *)data;
1078 case TK_M_PARENTS_MIN:
1079 case TK_M_PARENTS_MAX:
1083 err(rule_tmp->rules->udev, "wrong type %u\n", type);
1087 if (value != NULL && type < TK_M_MAX) {
1088 /* check if we need to split or call fnmatch() while matching rules */
1089 enum string_glob_type glob;
1093 has_split = (strchr(value, '|') != NULL);
1094 has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL);
1095 if (has_split && has_glob) {
1096 glob = GL_SPLIT_GLOB;
1097 } else if (has_split) {
1099 } else if (has_glob) {
1100 if (strcmp(value, "?*") == 0)
1101 glob = GL_SOMETHING;
1107 token->key.glob = glob;
1110 if (value != NULL && type > TK_M_MAX) {
1111 /* check if assigned value has substitution chars */
1112 if (value[0] == '[')
1113 token->key.subst = SB_SUBSYS;
1114 else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
1115 token->key.subst = SB_FORMAT;
1117 token->key.subst = SB_NONE;
1121 /* check if property/attribut name has substitution chars */
1123 token->key.attrsubst = SB_SUBSYS;
1124 else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL)
1125 token->key.attrsubst = SB_FORMAT;
1127 token->key.attrsubst = SB_NONE;
1130 token->key.type = type;
1132 rule_tmp->token_cur++;
1133 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
1134 err(rule_tmp->rules->udev, "temporary rule array too small\n");
1140 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
1143 unsigned int start = 0;
1144 unsigned int end = rule_tmp->token_cur;
1146 for (i = 0; i < rule_tmp->token_cur; i++) {
1147 enum token_type next_val = TK_UNSET;
1148 unsigned int next_idx = 0;
1151 /* find smallest value */
1152 for (j = start; j < end; j++) {
1153 if (rule_tmp->token[j].type == TK_UNSET)
1155 if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
1156 next_val = rule_tmp->token[j].type;
1161 /* add token and mark done */
1162 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
1164 rule_tmp->token[next_idx].type = TK_UNSET;
1167 if (next_idx == start)
1169 if (next_idx+1 == end)
1175 static int add_rule(struct udev_rules *rules, char *line,
1176 const char *filename, unsigned int filename_off, unsigned int lineno)
1180 struct rule_tmp rule_tmp;
1181 bool bus_warn = false;
1182 bool sysfs_warn = false;
1183 bool id_warn = false;
1185 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
1186 rule_tmp.rules = rules;
1187 rule_tmp.rule.type = TK_RULE;
1188 rule_tmp.rule.rule.filename_off = filename_off;
1189 rule_tmp.rule.rule.filename_line = lineno;
1195 enum operation_type op;
1197 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
1200 if (strcmp(key, "ACTION") == 0) {
1201 if (op > OP_MATCH_MAX) {
1202 err(rules->udev, "invalid ACTION operation\n");
1205 rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
1209 if (strcmp(key, "DEVPATH") == 0) {
1210 if (op > OP_MATCH_MAX) {
1211 err(rules->udev, "invalid DEVPATH operation\n");
1214 rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
1218 if (strcmp(key, "KERNEL") == 0) {
1219 if (op > OP_MATCH_MAX) {
1220 err(rules->udev, "invalid KERNEL operation\n");
1223 rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
1227 if (strcmp(key, "SUBSYSTEM") == 0) {
1228 if (op > OP_MATCH_MAX) {
1229 err(rules->udev, "invalid SUBSYSTEM operation\n");
1232 /* bus, class, subsystem events should all be the same */
1233 if (strcmp(value, "subsystem") == 0 ||
1234 strcmp(value, "bus") == 0 ||
1235 strcmp(value, "class") == 0) {
1236 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1237 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1238 "please fix it in %s:%u", value, filename, lineno);
1239 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1241 rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1245 if (strcmp(key, "DRIVER") == 0) {
1246 if (op > OP_MATCH_MAX) {
1247 err(rules->udev, "invalid DRIVER operation\n");
1250 rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1254 if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1255 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1257 err(rules->udev, "error parsing ATTR attribute\n");
1260 if (op < OP_MATCH_MAX) {
1261 rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
1263 rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
1268 if (strcmp(key, "KERNELS") == 0) {
1269 if (op > OP_MATCH_MAX) {
1270 err(rules->udev, "invalid KERNELS operation\n");
1273 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1277 if (strcmp(key, "ID") == 0) {
1280 err(rules->udev, "ID= will be removed in a future udev version, "
1281 "please use KERNEL= to match the event device, or KERNELS= "
1282 "to match a parent device, in %s:%u\n", filename, lineno);
1284 if (op > OP_MATCH_MAX) {
1285 err(rules->udev, "invalid KERNELS operation\n");
1288 rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1292 if (strcmp(key, "SUBSYSTEMS") == 0) {
1293 if (op > OP_MATCH_MAX) {
1294 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1297 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1301 if (strcmp(key, "BUS") == 0) {
1304 err(rules->udev, "BUS= will be removed in a future udev version, "
1305 "please use SUBSYSTEM= to match the event device, or SUBSYSTEMS= "
1306 "to match a parent device, in %s:%u\n", filename, lineno);
1308 if (op > OP_MATCH_MAX) {
1309 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1312 rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1316 if (strcmp(key, "DRIVERS") == 0) {
1317 if (op > OP_MATCH_MAX) {
1318 err(rules->udev, "invalid DRIVERS operation\n");
1321 rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1325 if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) {
1326 if (op > OP_MATCH_MAX) {
1327 err(rules->udev, "invalid ATTRS operation\n");
1330 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1332 err(rules->udev, "error parsing ATTRS attribute\n");
1335 if (strncmp(attr, "device/", 7) == 0)
1336 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1337 "please fix it in %s:%u", filename, lineno);
1338 else if (strstr(attr, "../") != NULL)
1339 err(rules->udev, "do not reference parent sysfs directories directly, "
1340 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1341 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1345 if (strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1348 err(rules->udev, "SYSFS{}= will be removed in a future udev version, "
1349 "please use ATTR{}= to match the event device, or ATTRS{}= "
1350 "to match a parent device, in %s:%u\n", filename, lineno);
1352 if (op > OP_MATCH_MAX) {
1353 err(rules->udev, "invalid ATTRS operation\n");
1356 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1358 err(rules->udev, "error parsing ATTRS attribute\n");
1361 rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
1365 if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1366 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1368 err(rules->udev, "error parsing ENV attribute\n");
1371 if (op < OP_MATCH_MAX) {
1372 if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1375 if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1381 if (strcmp(key, "TAG") == 0) {
1382 if (op < OP_MATCH_MAX)
1383 rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
1385 rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
1389 if (strcmp(key, "PROGRAM") == 0) {
1390 rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1394 if (strcmp(key, "RESULT") == 0) {
1395 if (op > OP_MATCH_MAX) {
1396 err(rules->udev, "invalid RESULT operation\n");
1399 rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
1403 if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1404 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1405 if (attr != NULL && strstr(attr, "program")) {
1406 dbg(rules->udev, "IMPORT will be executed\n");
1407 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1408 } else if (attr != NULL && strstr(attr, "file")) {
1409 dbg(rules->udev, "IMPORT will be included as file\n");
1410 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1411 } else if (attr != NULL && strstr(attr, "db")) {
1412 dbg(rules->udev, "IMPORT will include db values\n");
1413 rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
1414 } else if (attr != NULL && strstr(attr, "cmdline")) {
1415 dbg(rules->udev, "IMPORT will include db values\n");
1416 rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL);
1417 } else if (attr != NULL && strstr(attr, "parent")) {
1418 dbg(rules->udev, "IMPORT will include the parent values\n");
1419 rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1421 /* figure it out if it is executable */
1422 char file[UTIL_PATH_SIZE];
1424 struct stat statbuf;
1426 /* allow programs in /lib/udev called without the path */
1427 if (value[0] != '/')
1428 util_strscpyl(file, sizeof(file), LIBEXECDIR "/", value, NULL);
1430 util_strscpy(file, sizeof(file), value);
1431 pos = strchr(file, ' ');
1434 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1435 if (stat(file, &statbuf) == 0 && (statbuf.st_mode & S_IXUSR)) {
1436 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1437 rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1439 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1440 rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1446 if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) {
1449 if (op > OP_MATCH_MAX) {
1450 err(rules->udev, "invalid TEST operation\n");
1453 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1455 mode = strtol(attr, NULL, 8);
1456 rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
1458 rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
1463 if (strncmp(key, "RUN", sizeof("RUN")-1) == 0) {
1466 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1467 if (attr != NULL && strstr(attr, "fail_event_on_error"))
1469 rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag);
1473 if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) {
1474 rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1478 if (strcmp(key, "LABEL") == 0) {
1479 rule_tmp.rule.rule.label_off = add_string(rules, value);
1483 if (strcmp(key, "GOTO") == 0) {
1484 rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1488 if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) {
1489 if (op < OP_MATCH_MAX) {
1490 rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
1492 if (strcmp(value, "%k") == 0) {
1493 err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, "
1494 "please remove it from %s:%u\n", filename, lineno);
1497 if (value[0] == '\0') {
1498 info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, "
1499 "please remove it from %s:%u\n", filename, lineno);
1502 rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
1504 rule_tmp.rule.rule.can_set_name = true;
1508 if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) {
1509 if (op < OP_MATCH_MAX) {
1510 rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1514 attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1);
1515 if (attr != NULL && strstr(attr, "unique") != NULL)
1517 rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag);
1519 rule_tmp.rule.rule.can_set_name = true;
1523 if (strcmp(key, "OWNER") == 0) {
1527 uid = strtoul(value, &endptr, 10);
1528 if (endptr[0] == '\0') {
1529 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1530 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1531 uid = add_uid(rules, value);
1532 rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1533 } else if (rules->resolve_names >= 0) {
1534 rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
1536 rule_tmp.rule.rule.can_set_name = true;
1540 if (strcmp(key, "GROUP") == 0) {
1544 gid = strtoul(value, &endptr, 10);
1545 if (endptr[0] == '\0') {
1546 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1547 } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
1548 gid = add_gid(rules, value);
1549 rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1550 } else if (rules->resolve_names >= 0) {
1551 rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
1553 rule_tmp.rule.rule.can_set_name = true;
1557 if (strcmp(key, "MODE") == 0) {
1561 mode = strtol(value, &endptr, 8);
1562 if (endptr[0] == '\0')
1563 rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1565 rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
1566 rule_tmp.rule.rule.can_set_name = true;
1570 if (strcmp(key, "OPTIONS") == 0) {
1573 pos = strstr(value, "link_priority=");
1575 int prio = atoi(&pos[strlen("link_priority=")]);
1577 rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio);
1578 dbg(rules->udev, "link priority=%i\n", prio);
1581 pos = strstr(value, "event_timeout=");
1583 int tout = atoi(&pos[strlen("event_timeout=")]);
1585 rule_add_key(&rule_tmp, TK_M_EVENT_TIMEOUT, op, NULL, &tout);
1586 dbg(rules->udev, "event timeout=%i\n", tout);
1589 pos = strstr(value, "string_escape=");
1591 pos = &pos[strlen("string_escape=")];
1592 if (strncmp(pos, "none", strlen("none")) == 0)
1593 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL);
1594 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1595 rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL);
1598 pos = strstr(value, "db_persist");
1600 rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL);
1602 pos = strstr(value, "nowatch");
1606 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off);
1607 dbg(rules->udev, "inotify watch of device disabled\n");
1609 pos = strstr(value, "watch");
1613 rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on);
1614 dbg(rules->udev, "inotify watch of device requested\n");
1618 pos = strstr(value, "static_node=");
1620 rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL);
1621 rule_tmp.rule.rule.has_static_node = true;
1626 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1629 /* add rule token */
1630 rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
1631 if (add_token(rules, &rule_tmp.rule) != 0)
1634 /* add tokens to list, sorted by type */
1635 if (sort_token(rules, &rule_tmp) != 0)
1640 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1644 static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
1647 unsigned int first_token;
1648 char line[UTIL_LINE_SIZE];
1652 info(rules->udev, "reading '%s' as rules file\n", filename);
1654 f = fopen(filename, "r");
1658 first_token = rules->token_cur;
1660 while (fgets(line, sizeof(line), f) != NULL) {
1664 /* skip whitespace */
1667 while (isspace(key[0]))
1678 /* continue reading if backslash+newline is found */
1679 while (line[len-2] == '\\') {
1680 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1682 if (strlen(&line[len-2]) < 2)
1688 if (len+1 >= sizeof(line)) {
1689 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1692 add_rule(rules, key, filename, filename_off, line_nr);
1696 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1697 for (i = first_token+1; i < rules->token_cur; i++) {
1698 if (rules->tokens[i].type == TK_A_GOTO) {
1699 char *label = &rules->buf[rules->tokens[i].key.value_off];
1702 for (j = i+1; j < rules->token_cur; j++) {
1703 if (rules->tokens[j].type != TK_RULE)
1705 if (rules->tokens[j].rule.label_off == 0)
1707 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1709 rules->tokens[i].key.rule_goto = j;
1712 if (rules->tokens[i].key.rule_goto == 0)
1713 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1719 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1722 struct dirent *dent;
1723 char filename[UTIL_PATH_SIZE];
1725 dbg(udev, "open directory '%s'\n", dirname);
1726 dir = opendir(dirname);
1728 info(udev, "unable to open '%s': %m\n", dirname);
1732 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
1733 if (dent->d_name[0] == '.')
1736 /* look for file matching with specified suffix */
1737 if (suffix != NULL) {
1740 ext = strrchr(dent->d_name, '.');
1743 if (strcmp(ext, suffix) != 0)
1746 util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL);
1747 dbg(udev, "put file '%s' into list\n", filename);
1749 * the basename is the key, the filename the value
1750 * identical basenames from different directories overwrite each other
1751 * entries are sorted after basename
1753 udev_list_entry_add(udev, file_list, dent->d_name, filename, UDEV_LIST_UNIQUE|UDEV_LIST_SORT);
1760 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1762 struct udev_rules *rules;
1763 struct udev_list_node file_list;
1764 struct udev_list_entry *file_loop;
1765 struct token end_token;
1767 rules = calloc(1, sizeof(struct udev_rules));
1771 rules->resolve_names = resolve_names;
1772 udev_list_init(&file_list);
1774 /* init token array and string buffer */
1775 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1776 if (rules->tokens == NULL) {
1780 rules->token_max = PREALLOC_TOKEN;
1782 rules->buf = malloc(PREALLOC_STRBUF);
1783 if (rules->buf == NULL) {
1784 free(rules->tokens);
1788 rules->buf_max = PREALLOC_STRBUF;
1789 /* offset 0 is always '\0' */
1790 rules->buf[0] = '\0';
1792 dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1793 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1795 rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node));
1796 if (rules->trie_nodes == NULL) {
1798 free(rules->tokens);
1802 rules->trie_nodes_max = PREALLOC_TRIE;
1803 /* offset 0 is the trie root, with an empty string */
1804 memset(rules->trie_nodes, 0x00, sizeof(struct trie_node));
1805 rules->trie_nodes_cur = 1;
1807 if (udev_get_rules_path(udev) == NULL) {
1808 char filename[UTIL_PATH_SIZE];
1810 /* /lib/udev -- default/package rules */
1811 add_matching_files(udev, &file_list, LIBEXECDIR "/rules.d", ".rules");
1813 /* /etc/udev -- system-specific/user/admin rules */
1814 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1816 /* /run/udev -- throw-away/temporary rules */
1817 util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/rules.d", NULL);
1818 add_matching_files(udev, &file_list, filename, ".rules");
1820 /* custom rules files location for testing */
1821 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1824 /* add all filenames to the string buffer */
1825 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1826 const char *filename = udev_list_entry_get_value(file_loop);
1827 unsigned int filename_off;
1829 filename_off = add_string(rules, filename);
1830 /* the offset in the rule is limited to unsigned short */
1831 if (filename_off < USHRT_MAX)
1832 udev_list_entry_set_num(file_loop, filename_off);
1835 /* parse all rules files */
1836 udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
1837 const char *filename = udev_list_entry_get_value(file_loop);
1838 unsigned int filename_off = udev_list_entry_get_num(file_loop);
1841 if (stat(filename, &st) != 0) {
1842 err(udev, "can not find '%s': %m\n", filename);
1845 if (S_ISREG(st.st_mode) && st.st_size <= 0) {
1846 info(udev, "ignore empty '%s'\n", filename);
1849 if (S_ISCHR(st.st_mode)) {
1850 info(udev, "ignore masked '%s'\n", filename);
1853 parse_file(rules, filename, filename_off);
1855 udev_list_cleanup_entries(udev, &file_list);
1857 memset(&end_token, 0x00, sizeof(struct token));
1858 end_token.type = TK_END;
1859 add_token(rules, &end_token);
1861 /* shrink allocated token and string buffer */
1862 if (rules->token_cur < rules->token_max) {
1863 struct token *tokens;
1865 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1866 if (tokens != NULL || rules->token_cur == 0) {
1867 rules->tokens = tokens;
1868 rules->token_max = rules->token_cur;
1871 if (rules->buf_cur < rules->buf_max) {
1874 buf = realloc(rules->buf, rules->buf_cur);
1875 if (buf != NULL || rules->buf_cur == 0) {
1877 rules->buf_max = rules->buf_cur;
1880 info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1881 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1882 info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n",
1883 rules->trie_nodes_cur * sizeof(struct trie_node),
1884 rules->trie_nodes_cur, sizeof(struct trie_node));
1887 free(rules->trie_nodes);
1888 rules->trie_nodes = NULL;
1889 rules->trie_nodes_cur = 0;
1890 rules->trie_nodes_max = 0;
1892 /* cleanup uid/gid cache */
1895 rules->uids_cur = 0;
1896 rules->uids_max = 0;
1899 rules->gids_cur = 0;
1900 rules->gids_max = 0;
1906 void udev_rules_unref(struct udev_rules *rules)
1910 free(rules->tokens);
1912 free(rules->trie_nodes);
1918 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1920 char *key_value = &rules->buf[token->key.value_off];
1927 switch (token->key.glob) {
1929 match = (strcmp(key_value, val) == 0);
1932 match = (fnmatch(key_value, val, 0) == 0);
1939 split = &rules->buf[token->key.value_off];
1944 next = strchr(split, '|');
1946 size_t matchlen = (size_t)(next - split);
1948 match = (matchlen == len && strncmp(split, val, matchlen) == 0);
1952 match = (strcmp(split, val) == 0);
1961 char value[UTIL_PATH_SIZE];
1963 util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]);
1965 while (key_value != NULL) {
1966 pos = strchr(key_value, '|');
1971 dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val);
1972 match = (fnmatch(key_value, val, 0) == 0);
1980 match = (val[0] != '\0');
1986 if (match && (token->key.op == OP_MATCH)) {
1987 dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type));
1990 if (!match && (token->key.op == OP_NOMATCH)) {
1991 dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type));
1994 dbg(rules->udev, "%s is not true\n", token_str(token->type));
1998 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
2001 char nbuf[UTIL_NAME_SIZE];
2003 char vbuf[UTIL_NAME_SIZE];
2006 name = &rules->buf[cur->key.attr_off];
2007 switch (cur->key.attrsubst) {
2009 udev_event_apply_format(event, name, nbuf, sizeof(nbuf));
2013 value = udev_device_get_sysattr_value(dev, name);
2018 if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0)
2026 /* remove trailing whitespace, if not asked to match for it */
2027 len = strlen(value);
2028 if (len > 0 && isspace(value[len-1])) {
2029 const char *key_value;
2032 key_value = &rules->buf[cur->key.value_off];
2033 klen = strlen(key_value);
2034 if (klen > 0 && !isspace(key_value[klen-1])) {
2035 if (value != vbuf) {
2036 util_strscpy(vbuf, sizeof(vbuf), value);
2039 while (len > 0 && isspace(vbuf[--len]))
2041 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
2045 return match_key(rules, cur, value);
2054 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask)
2058 enum escape_type esc = ESCAPE_UNSET;
2061 if (rules->tokens == NULL)
2064 can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) &&
2065 (major(udev_device_get_devnum(event->dev)) > 0 ||
2066 udev_device_get_ifindex(event->dev) > 0));
2068 /* loop through token list, match, run actions or forward to next rule */
2069 cur = &rules->tokens[0];
2072 dump_token(rules, cur);
2073 switch (cur->type) {
2077 /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
2078 if (!can_set_name && rule->rule.can_set_name)
2083 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
2087 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
2091 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
2096 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
2097 struct udev_list_entry *list_entry;
2100 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
2101 const char *devlink;
2103 devlink = &udev_list_entry_get_name(list_entry)[devlen];
2104 if (match_key(rules, cur, devlink) == 0) {
2114 if (match_key(rules, cur, event->name) != 0)
2119 const char *key_name = &rules->buf[cur->key.attr_off];
2122 value = udev_device_get_property_value(event->dev, key_name);
2123 if (value == NULL) {
2124 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
2127 if (match_key(rules, cur, value))
2133 struct udev_list_entry *list_entry;
2136 udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) {
2137 if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) {
2142 if (!match && (cur->key.op != OP_NOMATCH))
2146 case TK_M_SUBSYSTEM:
2147 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
2151 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
2156 char filename[UTIL_PATH_SIZE];
2159 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2160 found = (wait_for_file(event->dev, filename, 10) == 0);
2161 if (!found && (cur->key.op != OP_NOMATCH))
2166 if (match_attr(rules, event->dev, event, cur) != 0)
2170 case TK_M_SUBSYSTEMS:
2176 /* get whole sequence of parent matches */
2178 while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
2181 /* loop over parents */
2182 event->dev_parent = event->dev;
2186 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
2187 /* loop over sequence of parent match keys */
2188 for (key = cur; key < next; key++ ) {
2189 dump_token(rules, key);
2192 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
2195 case TK_M_SUBSYSTEMS:
2196 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
2200 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
2204 if (match_attr(rules, event->dev_parent, event, key) != 0)
2210 dbg(event->udev, "parent key matched\n");
2212 dbg(event->udev, "all parent keys matched\n");
2213 /* all keys matched */
2217 event->dev_parent = udev_device_get_parent(event->dev_parent);
2218 if (event->dev_parent == NULL)
2221 /* move behind our sequence of parent match keys */
2227 char filename[UTIL_PATH_SIZE];
2228 struct stat statbuf;
2231 udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
2232 if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) {
2233 if (filename[0] != '/') {
2234 char tmp[UTIL_PATH_SIZE];
2236 util_strscpy(tmp, sizeof(tmp), filename);
2237 util_strscpyl(filename, sizeof(filename),
2238 udev_device_get_syspath(event->dev), "/", tmp, NULL);
2241 attr_subst_subdir(filename, sizeof(filename));
2243 match = (stat(filename, &statbuf) == 0);
2244 dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
2245 if (match && cur->key.mode > 0) {
2246 match = ((statbuf.st_mode & cur->key.mode) > 0);
2247 dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
2248 match ? "matches" : "does not match", cur->key.mode);
2250 if (match && cur->key.op == OP_NOMATCH)
2252 if (!match && cur->key.op == OP_MATCH)
2256 case TK_M_EVENT_TIMEOUT:
2257 info(event->udev, "OPTIONS event_timeout=%u\n", cur->key.event_timeout);
2258 event->timeout_usec = cur->key.event_timeout * 1000 * 1000;
2262 char program[UTIL_PATH_SIZE];
2264 char result[UTIL_PATH_SIZE];
2266 free(event->program_result);
2267 event->program_result = NULL;
2268 udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program));
2269 envp = udev_device_get_properties_envp(event->dev);
2270 info(event->udev, "PROGRAM '%s' %s:%u\n",
2272 &rules->buf[rule->rule.filename_off],
2273 rule->rule.filename_line);
2275 if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) {
2276 if (cur->key.op != OP_NOMATCH)
2281 util_remove_trailing_chars(result, '\n');
2282 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2283 count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
2285 info(event->udev, "%i character(s) replaced\n" , count);
2287 event->program_result = strdup(result);
2288 dbg(event->udev, "storing result '%s'\n", event->program_result);
2289 if (cur->key.op == OP_NOMATCH)
2294 case TK_M_IMPORT_FILE:
2296 char import[UTIL_PATH_SIZE];
2298 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2299 if (import_file_into_properties(event->dev, import) != 0)
2300 if (cur->key.op != OP_NOMATCH)
2304 case TK_M_IMPORT_PROG:
2306 char import[UTIL_PATH_SIZE];
2308 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2309 info(event->udev, "IMPORT '%s' %s:%u\n",
2311 &rules->buf[rule->rule.filename_off],
2312 rule->rule.filename_line);
2314 if (import_program_into_properties(event, import, sigmask) != 0)
2315 if (cur->key.op != OP_NOMATCH)
2319 case TK_M_IMPORT_DB:
2321 const char *key = &rules->buf[cur->key.value_off];
2324 value = udev_device_get_property_value(event->dev_db, key);
2325 if (value != NULL) {
2326 struct udev_list_entry *entry;
2328 entry = udev_device_add_property(event->dev, key, value);
2329 udev_list_entry_set_num(entry, true);
2331 if (cur->key.op != OP_NOMATCH)
2336 case TK_M_IMPORT_CMDLINE:
2339 bool imported = false;
2341 f = fopen("/proc/cmdline", "r");
2345 if (fgets(cmdline, sizeof(cmdline), f) != NULL) {
2346 const char *key = &rules->buf[cur->key.value_off];
2349 pos = strstr(cmdline, key);
2351 struct udev_list_entry *entry;
2354 if (pos[0] == '\0' || isspace(pos[0])) {
2355 /* we import simple flags as 'FLAG=1' */
2356 entry = udev_device_add_property(event->dev, key, "1");
2357 udev_list_entry_set_num(entry, true);
2359 } else if (pos[0] == '=') {
2364 while (pos[0] != '\0' && !isspace(pos[0]))
2367 entry = udev_device_add_property(event->dev, key, value);
2368 udev_list_entry_set_num(entry, true);
2375 if (!imported && cur->key.op != OP_NOMATCH)
2379 case TK_M_IMPORT_PARENT:
2381 char import[UTIL_PATH_SIZE];
2383 udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
2384 if (import_parent_into_properties(event->dev, import) != 0)
2385 if (cur->key.op != OP_NOMATCH)
2390 if (match_key(rules, cur, event->program_result) != 0)
2393 case TK_A_STRING_ESCAPE_NONE:
2396 case TK_A_STRING_ESCAPE_REPLACE:
2397 esc = ESCAPE_REPLACE;
2399 case TK_A_DB_PERSIST:
2400 udev_device_set_db_persist(event->dev);
2402 case TK_A_INOTIFY_WATCH:
2403 if (event->inotify_watch_final)
2405 if (cur->key.op == OP_ASSIGN_FINAL)
2406 event->inotify_watch_final = true;
2407 event->inotify_watch = cur->key.watch;
2409 case TK_A_DEVLINK_PRIO:
2410 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2414 char owner[UTIL_NAME_SIZE];
2416 if (event->owner_final)
2418 if (cur->key.op == OP_ASSIGN_FINAL)
2419 event->owner_final = true;
2420 udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner));
2421 event->uid = util_lookup_user(event->udev, owner);
2422 info(event->udev, "OWNER %u %s:%u\n",
2424 &rules->buf[rule->rule.filename_off],
2425 rule->rule.filename_line);
2430 char group[UTIL_NAME_SIZE];
2432 if (event->group_final)
2434 if (cur->key.op == OP_ASSIGN_FINAL)
2435 event->group_final = true;
2436 udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group));
2437 event->gid = util_lookup_group(event->udev, group);
2438 info(event->udev, "GROUP %u %s:%u\n",
2440 &rules->buf[rule->rule.filename_off],
2441 rule->rule.filename_line);
2446 char mode[UTIL_NAME_SIZE];
2449 if (event->mode_final)
2451 if (cur->key.op == OP_ASSIGN_FINAL)
2452 event->mode_final = true;
2453 udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode, sizeof(mode));
2454 event->mode = strtol(mode, &endptr, 8);
2455 if (endptr[0] != '\0') {
2456 err(event->udev, "invalide mode '%s' set default mode 0600\n", mode);
2459 info(event->udev, "MODE %#o %s:%u\n",
2461 &rules->buf[rule->rule.filename_off],
2462 rule->rule.filename_line);
2466 if (event->owner_final)
2468 if (cur->key.op == OP_ASSIGN_FINAL)
2469 event->owner_final = true;
2470 event->uid = cur->key.uid;
2471 info(event->udev, "OWNER %u %s:%u\n",
2473 &rules->buf[rule->rule.filename_off],
2474 rule->rule.filename_line);
2477 if (event->group_final)
2479 if (cur->key.op == OP_ASSIGN_FINAL)
2480 event->group_final = true;
2481 event->gid = cur->key.gid;
2482 info(event->udev, "GROUP %u %s:%u\n",
2484 &rules->buf[rule->rule.filename_off],
2485 rule->rule.filename_line);
2488 if (event->mode_final)
2490 if (cur->key.op == OP_ASSIGN_FINAL)
2491 event->mode_final = true;
2492 event->mode = cur->key.mode;
2493 info(event->udev, "MODE %#o %s:%u\n",
2495 &rules->buf[rule->rule.filename_off],
2496 rule->rule.filename_line);
2498 case TK_A_STATIC_NODE:
2502 const char *name = &rules->buf[cur->key.attr_off];
2503 char *value = &rules->buf[cur->key.value_off];
2505 if (value[0] != '\0') {
2506 char temp_value[UTIL_NAME_SIZE];
2507 struct udev_list_entry *entry;
2509 udev_event_apply_format(event, value, temp_value, sizeof(temp_value));
2510 entry = udev_device_add_property(event->dev, name, temp_value);
2511 /* store in db, skip private keys */
2513 udev_list_entry_set_num(entry, true);
2515 udev_device_add_property(event->dev, name, NULL);
2520 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2521 udev_device_cleanup_tags_list(event->dev);
2522 udev_device_add_tag(event->dev, &rules->buf[cur->key.value_off]);
2526 const char *name = &rules->buf[cur->key.value_off];
2527 char name_str[UTIL_PATH_SIZE];
2530 if (event->name_final)
2532 if (cur->key.op == OP_ASSIGN_FINAL)
2533 event->name_final = true;
2534 udev_event_apply_format(event, name, name_str, sizeof(name_str));
2535 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2536 count = udev_util_replace_chars(name_str, "/");
2538 info(event->udev, "%i character(s) replaced\n", count);
2541 event->name = strdup(name_str);
2542 info(event->udev, "NAME '%s' %s:%u\n",
2544 &rules->buf[rule->rule.filename_off],
2545 rule->rule.filename_line);
2550 char temp[UTIL_PATH_SIZE];
2551 char filename[UTIL_PATH_SIZE];
2555 if (event->devlink_final)
2557 if (major(udev_device_get_devnum(event->dev)) == 0)
2559 if (cur->key.op == OP_ASSIGN_FINAL)
2560 event->devlink_final = true;
2561 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2562 udev_device_cleanup_devlinks_list(event->dev);
2564 /* allow multiple symlinks separated by spaces */
2565 udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp));
2566 if (esc == ESCAPE_UNSET)
2567 count = udev_util_replace_chars(temp, "/ ");
2568 else if (esc == ESCAPE_REPLACE)
2569 count = udev_util_replace_chars(temp, "/");
2571 info(event->udev, "%i character(s) replaced\n" , count);
2572 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2574 while (isspace(pos[0]))
2576 next = strchr(pos, ' ');
2577 while (next != NULL) {
2579 info(event->udev, "LINK '%s' %s:%u\n", pos,
2580 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2581 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2582 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2583 while (isspace(next[1]))
2586 next = strchr(pos, ' ');
2588 if (pos[0] != '\0') {
2589 info(event->udev, "LINK '%s' %s:%u\n", pos,
2590 &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
2591 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
2592 udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
2598 const char *key_name = &rules->buf[cur->key.attr_off];
2599 char attr[UTIL_PATH_SIZE];
2600 char value[UTIL_NAME_SIZE];
2603 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
2604 util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
2605 attr_subst_subdir(attr, sizeof(attr));
2607 udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value));
2608 info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value,
2609 &rules->buf[rule->rule.filename_off],
2610 rule->rule.filename_line);
2611 f = fopen(attr, "w");
2613 if (fprintf(f, "%s", value) <= 0)
2614 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2617 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2623 struct udev_list_entry *list_entry;
2625 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2626 udev_list_cleanup_entries(event->udev, &event->run_list);
2627 info(event->udev, "RUN '%s' %s:%u\n",
2628 &rules->buf[cur->key.value_off],
2629 &rules->buf[rule->rule.filename_off],
2630 rule->rule.filename_line);
2631 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2632 &rules->buf[cur->key.value_off], NULL, UDEV_LIST_UNIQUE);
2633 if (cur->key.fail_on_error)
2634 udev_list_entry_set_num(list_entry, true);
2638 if (cur->key.rule_goto == 0)
2640 cur = &rules->tokens[cur->key.rule_goto];
2645 case TK_M_PARENTS_MIN:
2646 case TK_M_PARENTS_MAX:
2649 err(rules->udev, "wrong type %u\n", cur->type);
2656 /* fast-forward to next rule */
2657 cur = rule + rule->rule.token_count;
2658 dbg(rules->udev, "forward to rule: %u\n",
2659 (unsigned int) (cur - rules->tokens));
2663 void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
2671 if (rules->tokens == NULL)
2674 cur = &rules->tokens[0];
2677 switch (cur->type) {
2682 /* skip rules without a static_node tag */
2683 if (!rule->rule.has_static_node)
2697 mode = cur->key.mode;
2699 case TK_A_STATIC_NODE: {
2700 char filename[UTIL_PATH_SIZE];
2702 /* we assure, that the permissions tokens are sorted before the static token */
2703 if (mode == 0 && uid == 0 && gid == 0)
2705 util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/",
2706 &rules->buf[cur->key.value_off], NULL);
2707 if (stat(filename, &stats) != 0)
2709 if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
2711 if (mode != 0 && mode != (stats.st_mode & 0777)) {
2712 chmod(filename, mode);
2713 info(rules->udev, "chmod '%s' %#o\n", filename, mode);
2715 if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
2716 chown(filename, uid, gid);
2717 info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid);
2719 utimensat(AT_FDCWD, filename, NULL, 0);
2729 /* fast-forward to next rule */
2730 cur = rule + rule->rule.token_count;