2 * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #define PREALLOC_TOKEN 2048
32 #define PREALLOC_STRBUF 32 * 1024
34 /* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */
47 static const char *operation_str[] = {
50 [OP_NOMATCH] = "nomatch",
51 [OP_MATCH_MAX] = "MATCH_MAX",
54 [OP_ASSIGN] = "assign",
55 [OP_ASSIGN_FINAL] = "assign-final",
58 enum string_glob_type {
67 static const char *string_glob_str[] = {
72 [GL_SPLIT_GLOB] = "split-glob",
73 [GL_FORMAT] = "format",
76 /* tokens of a rule are sorted/handled in this order */
81 TK_M_ACTION, /* val */
82 TK_M_DEVPATH, /* val */
83 TK_M_KERNEL, /* val */
84 TK_M_DEVLINK, /* val */
86 TK_M_ENV, /* val, attr */
87 TK_M_SUBSYSTEM, /* val */
88 TK_M_DRIVER, /* val */
89 TK_M_WAITFOR, /* val */
90 TK_M_ATTR, /* val, attr */
92 TK_M_KERNELS, /* val */
93 TK_M_SUBSYSTEMS, /* val */
94 TK_M_DRIVERS, /* val */
95 TK_M_ATTRS, /* val, attr */
98 TK_M_TEST, /* val, mode_t */
99 TK_M_PROGRAM, /* val */
100 TK_M_IMPORT_FILE, /* val */
101 TK_M_IMPORT_PROG, /* val */
102 TK_M_IMPORT_PARENT, /* val */
103 TK_M_RESULT, /* val */
107 TK_A_STRING_ESCAPE_NONE,
108 TK_A_STRING_ESCAPE_REPLACE,
109 TK_A_NUM_FAKE_PART, /* int */
110 TK_A_DEVLINK_PRIO, /* int */
111 TK_A_OWNER, /* val */
112 TK_A_GROUP, /* val */
114 TK_A_OWNER_ID, /* uid_t */
115 TK_A_GROUP_ID, /* gid_t */
116 TK_A_MODE_ID, /* mode_t */
117 TK_A_ENV, /* val, attr */
119 TK_A_DEVLINK, /* val */
120 TK_A_EVENT_TIMEOUT, /* int */
122 TK_A_ATTR, /* val, attr */
123 TK_A_RUN, /* val, bool */
124 TK_A_GOTO, /* size_t */
130 static const char *token_str[] = {
131 [TK_UNSET] = "UNSET",
134 [TK_M_ACTION] = "M ACTION",
135 [TK_M_DEVPATH] = "M DEVPATH",
136 [TK_M_KERNEL] = "M KERNEL",
137 [TK_M_DEVLINK] = "M DEVLINK",
138 [TK_M_NAME] = "M NAME",
139 [TK_M_ENV] = "M ENV",
140 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
141 [TK_M_DRIVER] = "M DRIVER",
142 [TK_M_WAITFOR] = "M WAITFOR",
143 [TK_M_ATTR] = "M ATTR",
145 [TK_M_KERNELS] = "M KERNELS",
146 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
147 [TK_M_DRIVERS] = "M DRIVERS",
148 [TK_M_ATTRS] = "M ATTRS",
149 [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
151 [TK_M_TEST] = "M TEST",
152 [TK_M_PROGRAM] = "M PROGRAM",
153 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
154 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
155 [TK_M_IMPORT_PARENT] = "M MPORT_PARENT",
156 [TK_M_RESULT] = "M RESULT",
157 [TK_M_MAX] = "M MAX",
159 [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE",
160 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
161 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
162 [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART",
163 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
164 [TK_A_OWNER] = "A OWNER",
165 [TK_A_GROUP] = "A GROUP",
166 [TK_A_MODE] = "A MODE",
167 [TK_A_OWNER_ID] = "A OWNER_ID",
168 [TK_A_GROUP_ID] = "A GROUP_ID",
169 [TK_A_MODE_ID] = "A MODE_ID",
170 [TK_A_ENV] = "A ENV",
171 [TK_A_NAME] = "A NAME",
172 [TK_A_DEVLINK] = "A DEVLINK",
173 [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
174 [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE",
175 [TK_A_ATTR] = "A ATTR",
176 [TK_A_RUN] = "A RUN",
177 [TK_A_GOTO] = "A GOTO",
178 [TK_A_LAST_RULE] = "A LAST_RULE",
184 enum token_type type;
187 unsigned int next_rule;
188 unsigned int label_off;
189 unsigned int filename_off;
194 unsigned int value_off;
196 unsigned int attr_off;
199 unsigned int rule_goto;
213 struct udev_rules *rules;
215 struct token token[MAX_TK];
216 unsigned int token_cur;
220 unsigned int name_off;
231 /* every key in the rules file becomes a token */
232 struct token *tokens;
233 unsigned int token_cur;
234 unsigned int token_max;
236 /* all key strings are copied to a single string buffer */
240 unsigned int buf_count;
242 /* during rule parsing, we cache uid/gid lookup results */
243 struct uid_gid *uids;
244 unsigned int uids_cur;
245 unsigned int uids_max;
246 struct uid_gid *gids;
247 unsigned int gids_cur;
248 unsigned int gids_max;
251 /* NOTE: we could lookup and return existing strings, or tails of strings */
252 static int add_string(struct udev_rules *rules, const char *str)
254 size_t len = strlen(str)+1;
257 /* offset 0 is always '\0' */
261 /* grow buffer if needed */
262 if (rules->buf_cur + len+1 >= rules->buf_max) {
266 /* double the buffer size */
267 add = rules->buf_max;
271 buf = realloc(rules->buf, rules->buf_max + add);
274 info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
276 rules->buf_max += add;
278 off = rules->buf_cur;
279 memcpy(&rules->buf[rules->buf_cur], str, len);
280 rules->buf_cur += len;
285 static int add_token(struct udev_rules *rules, struct token *token)
288 /* grow buffer if needed */
289 if (rules->token_cur+1 >= rules->token_max) {
290 struct token *tokens;
293 /* double the buffer size */
294 add = rules->token_max;
298 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
301 info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
302 rules->tokens = tokens;
303 rules->token_max += add;
305 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
310 static uid_t add_uid(struct udev_rules *rules, const char *owner)
316 /* lookup, if we know it already */
317 for (i = 0; i < rules->uids_cur; i++) {
318 off = rules->uids[i].name_off;
319 if (strcmp(&rules->buf[off], owner) == 0) {
320 uid = rules->uids[i].uid;
321 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
325 uid = util_lookup_user(rules->udev, owner);
327 /* grow buffer if needed */
328 if (rules->uids_cur+1 >= rules->uids_max) {
329 struct uid_gid *uids;
332 /* double the buffer size */
333 add = rules->uids_max;
337 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
340 info(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
342 rules->uids_max += add;
344 rules->uids[rules->uids_cur].uid = uid;
345 off = add_string(rules, owner);
348 rules->uids[rules->uids_cur].name_off = off;
353 static gid_t add_gid(struct udev_rules *rules, const char *group)
359 /* lookup, if we know it already */
360 for (i = 0; i < rules->gids_cur; i++) {
361 off = rules->gids[i].name_off;
362 if (strcmp(&rules->buf[off], group) == 0) {
363 gid = rules->gids[i].gid;
364 dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
368 gid = util_lookup_group(rules->udev, group);
370 /* grow buffer if needed */
371 if (rules->gids_cur+1 >= rules->gids_max) {
372 struct uid_gid *gids;
375 /* double the buffer size */
376 add = rules->gids_max;
380 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
383 info(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
385 rules->gids_max += add;
387 rules->gids[rules->gids_cur].gid = gid;
388 off = add_string(rules, group);
391 rules->gids[rules->gids_cur].name_off = off;
396 static int import_property_from_string(struct udev_device *dev, char *line)
398 struct udev *udev = udev_device_get_udev(dev);
405 while (isspace(key[0]))
408 /* comment or empty line */
409 if (key[0] == '#' || key[0] == '\0')
412 /* split key/value */
413 val = strchr(key, '=');
420 while (isspace(val[0]))
427 while (isspace(key[len-1]))
431 /* terminate value */
435 while (isspace(val[len-1]))
443 if (val[0] == '"' || val[0] == '\'') {
444 if (val[len-1] != val[0]) {
445 info(udev, "inconsistent quoting: '%s', skip\n", line);
452 info(udev, "adding '%s'='%s'\n", key, val);
454 /* handle device, renamed by external tool, returning new path */
455 if (strcmp(key, "DEVPATH") == 0) {
456 char syspath[UTIL_PATH_SIZE];
458 info(udev, "updating devpath from '%s' to '%s'\n",
459 udev_device_get_devpath(dev), val);
460 util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
461 util_strlcat(syspath, val, sizeof(syspath));
462 udev_device_set_syspath(dev, syspath);
464 struct udev_list_entry *entry;
466 entry = udev_device_add_property(dev, key, val);
468 udev_list_entry_set_flag(entry, 1);
473 static int import_file_into_properties(struct udev_device *dev, const char *filename)
476 char line[UTIL_LINE_SIZE];
478 f = fopen(filename, "r");
481 while (fgets(line, sizeof(line), f) != NULL)
482 import_property_from_string(dev, line);
487 static int import_program_into_properties(struct udev_device *dev, const char *program)
489 struct udev *udev = udev_device_get_udev(dev);
495 envp = udev_device_get_properties_envp(dev);
496 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0)
500 while (line != NULL) {
503 pos = strchr(line, '\n');
508 import_property_from_string(dev, line);
514 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
516 struct udev *udev = udev_device_get_udev(dev);
517 struct udev_device *dev_parent;
518 struct udev_list_entry *list_entry;
520 dev_parent = udev_device_get_parent(dev);
521 if (dev_parent == NULL)
524 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
525 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
526 const char *key = udev_list_entry_get_name(list_entry);
527 const char *val = udev_list_entry_get_value(list_entry);
529 if (fnmatch(filter, key, 0) == 0) {
530 struct udev_list_entry *entry;
532 dbg(udev, "import key '%s=%s'\n", key, val);
533 entry = udev_device_add_property(dev, key, val);
535 udev_list_entry_set_flag(entry, 1);
541 #define WAIT_LOOP_PER_SECOND 50
542 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
544 struct udev *udev = udev_device_get_udev(dev);
545 char filepath[UTIL_PATH_SIZE];
546 char devicepath[UTIL_PATH_SIZE] = "";
548 int loop = timeout * WAIT_LOOP_PER_SECOND;
550 /* a relative path is a device attribute */
551 if (file[0] != '/') {
552 util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
553 util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
555 util_strlcpy(filepath, devicepath, sizeof(filepath));
556 util_strlcat(filepath, "/", sizeof(filepath));
557 util_strlcat(filepath, file, sizeof(filepath));
561 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
564 if (stat(file, &stats) == 0) {
565 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
568 /* make sure, the device did not disappear in the meantime */
569 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
570 info(udev, "device disappeared while waiting for '%s'\n", file);
573 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
574 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
576 info(udev, "waiting for '%s' failed\n", file);
580 static int attr_subst_subdir(char *attr, size_t len)
585 pos = strstr(attr, "/*/");
587 char str[UTIL_PATH_SIZE];
591 util_strlcpy(str, &pos[2], sizeof(str));
596 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
599 if (dent->d_name[0] == '.')
601 util_strlcat(attr, dent->d_name, len);
602 util_strlcat(attr, str, len);
603 if (stat(attr, &stats) == 0) {
612 util_strlcat(attr, str, len);
618 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
624 if (linepos == NULL && linepos[0] == '\0')
627 /* skip whitespace */
628 while (isspace(linepos[0]) || linepos[0] == ',')
632 if (linepos[0] == '\0')
638 if (linepos[0] == '\0')
640 if (isspace(linepos[0]))
642 if (linepos[0] == '=')
644 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
645 if (linepos[1] == '=')
649 /* remember end of key */
652 /* skip whitespace after key */
653 while (isspace(linepos[0]))
655 if (linepos[0] == '\0')
658 /* get operation type */
659 if (linepos[0] == '=' && linepos[1] == '=') {
662 } else if (linepos[0] == '!' && linepos[1] == '=') {
665 } else if (linepos[0] == '+' && linepos[1] == '=') {
668 } else if (linepos[0] == '=') {
671 } else if (linepos[0] == ':' && linepos[1] == '=') {
672 *op = OP_ASSIGN_FINAL;
680 /* skip whitespace after operator */
681 while (isspace(linepos[0]))
683 if (linepos[0] == '\0')
687 if (linepos[0] == '"')
694 temp = strchr(linepos, '"');
699 dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value);
701 /* move line to next key */
706 /* extract possible KEY{attr} */
707 static char *get_key_attribute(struct udev *udev, char *str)
712 attr = strchr(str, '{');
715 pos = strchr(attr, '}');
717 err(udev, "missing closing brace for format\n");
721 dbg(udev, "attribute='%s'\n", attr);
727 static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
728 enum operation_type op,
729 const char *value, const void *data)
731 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
732 const char *attr = data;
733 enum string_glob_type glob;
735 memset(token, 0x00, sizeof(struct token));
747 case TK_M_SUBSYSTEMS:
750 case TK_M_IMPORT_FILE:
751 case TK_M_IMPORT_PROG:
752 case TK_M_IMPORT_PARENT:
760 token->key.value_off = add_string(rule_tmp->rules, value);
767 token->key.value_off = add_string(rule_tmp->rules, value);
768 token->key.attr_off = add_string(rule_tmp->rules, attr);
771 token->key.value_off = add_string(rule_tmp->rules, value);
773 token->key.mode = *(mode_t *)data;
775 case TK_A_IGNORE_DEVICE:
776 case TK_A_STRING_ESCAPE_NONE:
777 case TK_A_STRING_ESCAPE_REPLACE:
778 case TK_A_IGNORE_REMOVE:
782 token->key.value_off = add_string(rule_tmp->rules, value);
783 token->key.ignore_error = *(int *)data;
785 case TK_A_NUM_FAKE_PART:
786 token->key.num_fake_part = *(int *)data;
788 case TK_A_DEVLINK_PRIO:
789 token->key.devlink_prio = *(int *)data;
792 token->key.uid = *(uid_t *)data;
795 token->key.gid = *(gid_t *)data;
798 token->key.mode = *(mode_t *)data;
800 case TK_A_EVENT_TIMEOUT:
801 token->key.event_timeout = *(int *)data;
804 case TK_M_PARENTS_MAX:
808 err(rule_tmp->rules->udev, "wrong type %u\n", type);
814 if (type < TK_M_MAX) {
815 /* check if we need to split or call fnmatch() while matching rules */
819 has_split = (strchr(value, '|') != NULL);
820 has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL ||
821 strchr(value, '[') != NULL || strchr(value, ']') != NULL);
822 if (has_split && has_glob)
823 glob = GL_SPLIT_GLOB;
829 /* check if we need to substitute format strings for matching rules */
830 if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
837 token->key.glob = glob;
838 rule_tmp->token_cur++;
839 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
840 err(rule_tmp->rules->udev, "temporary rule array too small\n");
847 static void dump_token(struct udev_rules *rules, struct token *token)
849 enum token_type type = token->type;
850 enum operation_type op = token->key.op;
851 enum string_glob_type glob = token->key.glob;
852 const char *value = &rules->buf[token->key.value_off];
853 const char *attr = &rules->buf[token->key.attr_off];
858 const char *tks_ptr = (char *)rules->tokens;
859 const char *tk_ptr = (char *)token;
860 unsigned int off = tk_ptr - tks_ptr;
862 dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
863 &rules->buf[token->rule.filename_off],
864 off / (unsigned int) sizeof(struct token), off,
865 token->rule.next_rule,
866 &rules->buf[token->rule.label_off]);
878 case TK_M_SUBSYSTEMS:
881 case TK_M_IMPORT_FILE:
882 case TK_M_IMPORT_PROG:
883 case TK_M_IMPORT_PARENT:
891 dbg(rules->udev, "%s %s '%s'(%s)\n",
892 token_str[type], operation_str[op], value, string_glob_str[glob]);
899 dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
900 token_str[type], operation_str[op], attr, value, string_glob_str[glob]);
902 case TK_A_IGNORE_DEVICE:
903 case TK_A_STRING_ESCAPE_NONE:
904 case TK_A_STRING_ESCAPE_REPLACE:
906 case TK_A_IGNORE_REMOVE:
907 dbg(rules->udev, "%s\n", token_str[type]);
910 dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
911 token_str[type], operation_str[op], value, string_glob_str[glob], token->key.mode);
913 case TK_A_NUM_FAKE_PART:
914 dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part);
916 case TK_A_DEVLINK_PRIO:
917 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.devlink_prio);
920 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid);
923 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid);
926 dbg(rules->udev, "%s %s %#o\n", token_str[type], operation_str[op], token->key.mode);
928 case TK_A_EVENT_TIMEOUT:
929 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout);
932 dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto);
935 dbg(rules->udev, "* %s\n", token_str[type]);
937 case TK_M_PARENTS_MAX:
939 dbg(rules->udev, "unknown type %u\n", type);
944 static void dump_rules(struct udev_rules *rules)
948 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
950 rules->token_cur * sizeof(struct token),
953 for(i = 0; i < rules->token_cur; i++)
954 dump_token(rules, &rules->tokens[i]);
957 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
958 static inline void dump_rules(struct udev_rules *rules) {}
961 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
964 unsigned int start = 0;
965 unsigned int end = rule_tmp->token_cur;
967 for (i = 0; i < rule_tmp->token_cur; i++) {
968 enum token_type next_val = TK_UNSET;
969 unsigned int next_idx;
972 /* find smallest value */
973 for (j = start; j < end; j++) {
974 if (rule_tmp->token[j].type == TK_UNSET)
976 if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
977 next_val = rule_tmp->token[j].type;
982 /* add token and mark done */
983 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
985 rule_tmp->token[next_idx].type = TK_UNSET;
988 if (next_idx == start)
990 if (next_idx+1 == end)
996 static int add_rule(struct udev_rules *rules, char *line,
997 const char *filename, unsigned int filename_off, unsigned int lineno)
1003 struct rule_tmp rule_tmp;
1005 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
1006 rule_tmp.rules = rules;
1007 rule_tmp.rule.type = TK_RULE;
1008 rule_tmp.rule.rule.filename_off = filename_off;
1014 enum operation_type op;
1016 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
1019 if (strcasecmp(key, "ACTION") == 0) {
1020 if (op > OP_MATCH_MAX) {
1021 err(rules->udev, "invalid ACTION operation\n");
1024 rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
1029 if (strcasecmp(key, "DEVPATH") == 0) {
1030 if (op > OP_MATCH_MAX) {
1031 err(rules->udev, "invalid DEVPATH operation\n");
1034 rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
1039 if (strcasecmp(key, "KERNEL") == 0) {
1040 if (op > OP_MATCH_MAX) {
1041 err(rules->udev, "invalid KERNEL operation\n");
1044 rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
1049 if (strcasecmp(key, "SUBSYSTEM") == 0) {
1050 if (op > OP_MATCH_MAX) {
1051 err(rules->udev, "invalid SUBSYSTEM operation\n");
1054 /* bus, class, subsystem events should all be the same */
1055 if (strcmp(value, "subsystem") == 0 ||
1056 strcmp(value, "bus") == 0 ||
1057 strcmp(value, "class") == 0) {
1058 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1059 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1060 "please fix it in %s:%u", value, filename, lineno);
1061 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1063 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1068 if (strcasecmp(key, "DRIVER") == 0) {
1069 if (op > OP_MATCH_MAX) {
1070 err(rules->udev, "invalid DRIVER operation\n");
1073 rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1078 if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1079 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1081 err(rules->udev, "error parsing ATTR attribute\n");
1084 if (op < OP_MATCH_MAX) {
1085 rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
1087 rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
1093 if (strcasecmp(key, "KERNELS") == 0 ||
1094 strcasecmp(key, "ID") == 0) {
1095 if (op > OP_MATCH_MAX) {
1096 err(rules->udev, "invalid KERNELS operation\n");
1099 rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1104 if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
1105 strcasecmp(key, "BUS") == 0) {
1106 if (op > OP_MATCH_MAX) {
1107 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1110 rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1115 if (strcasecmp(key, "DRIVERS") == 0) {
1116 if (op > OP_MATCH_MAX) {
1117 err(rules->udev, "invalid DRIVERS operation\n");
1120 rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1125 if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
1126 strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1127 if (op > OP_MATCH_MAX) {
1128 err(rules->udev, "invalid ATTRS operation\n");
1131 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1133 err(rules->udev, "error parsing ATTRS attribute\n");
1136 if (strncmp(attr, "device/", 7) == 0)
1137 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1138 "please fix it in %s:%u", filename, lineno);
1139 else if (strstr(attr, "../") != NULL)
1140 err(rules->udev, "do not reference parent sysfs directories directly, "
1141 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1142 rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
1147 if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1148 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1150 err(rules->udev, "error parsing ENV attribute\n");
1153 if (strncmp(attr, "PHYSDEV", 7) == 0)
1155 if (op < OP_MATCH_MAX) {
1156 if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1159 if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1166 if (strcasecmp(key, "PROGRAM") == 0) {
1167 rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1172 if (strcasecmp(key, "RESULT") == 0) {
1173 if (op > OP_MATCH_MAX) {
1174 err(rules->udev, "invalid RESULT operation\n");
1177 rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
1182 if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1183 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1184 if (attr != NULL && strstr(attr, "program")) {
1185 dbg(rules->udev, "IMPORT will be executed\n");
1186 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1188 } else if (attr != NULL && strstr(attr, "file")) {
1189 dbg(rules->udev, "IMPORT will be included as file\n");
1190 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1192 } else if (attr != NULL && strstr(attr, "parent")) {
1193 dbg(rules->udev, "IMPORT will include the parent values\n");
1194 rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1197 /* figure it out if it is executable */
1198 char file[UTIL_PATH_SIZE];
1200 struct stat statbuf;
1202 util_strlcpy(file, value, sizeof(file));
1203 pos = strchr(file, ' ');
1207 /* allow programs in /lib/udev called without the path */
1208 if (strchr(file, '/') == NULL) {
1209 util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
1210 util_strlcat(file, value, sizeof(file));
1211 pos = strchr(file, ' ');
1216 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1217 if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
1218 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1219 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1222 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1223 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1230 if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
1233 if (op > OP_MATCH_MAX) {
1234 err(rules->udev, "invalid TEST operation\n");
1237 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1239 mode = strtol(attr, NULL, 8);
1240 rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
1242 rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
1248 if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
1251 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1252 if (attr != NULL && strstr(attr, "ignore_error"))
1254 rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
1259 if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
1260 rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1265 if (strcasecmp(key, "LABEL") == 0) {
1266 rule_tmp.rule.rule.label_off = add_string(rules, value);
1271 if (strcasecmp(key, "GOTO") == 0) {
1272 rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1277 if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
1278 if (op < OP_MATCH_MAX) {
1279 rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
1281 if (value[0] == '\0')
1282 dbg(rules->udev, "name empty, node creation suppressed\n");
1283 rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
1284 attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
1286 if (strstr(attr, "all_partitions") != NULL) {
1287 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1289 dbg(rules->udev, "creation of partition nodes requested\n");
1290 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1292 if (strstr(attr, "ignore_remove") != NULL) {
1293 dbg(rules->udev, "remove event should be ignored\n");
1294 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1301 if (strcasecmp(key, "SYMLINK") == 0) {
1302 if (op < OP_MATCH_MAX)
1303 rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1305 rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
1310 if (strcasecmp(key, "OWNER") == 0) {
1314 uid = strtoul(value, &endptr, 10);
1315 if (endptr[0] == '\0') {
1316 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1317 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1318 uid = add_uid(rules, value);
1319 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1321 rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
1327 if (strcasecmp(key, "GROUP") == 0) {
1331 gid = strtoul(value, &endptr, 10);
1332 if (endptr[0] == '\0') {
1333 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1334 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1335 gid = add_gid(rules, value);
1336 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1338 rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
1344 if (strcasecmp(key, "MODE") == 0) {
1348 mode = strtol(value, &endptr, 8);
1349 if (endptr[0] == '\0')
1350 rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1352 rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
1357 if (strcasecmp(key, "OPTIONS") == 0) {
1360 if (strstr(value, "last_rule") != NULL) {
1361 dbg(rules->udev, "last rule to be applied\n");
1362 rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
1364 if (strstr(value, "ignore_device") != NULL) {
1365 dbg(rules->udev, "device should be ignored\n");
1366 rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
1368 if (strstr(value, "ignore_remove") != NULL) {
1369 dbg(rules->udev, "remove event should be ignored\n");
1370 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1372 pos = strstr(value, "link_priority=");
1374 int prio = atoi(&pos[strlen("link_priority=")]);
1376 rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1377 dbg(rules->udev, "link priority=%i\n", prio);
1379 pos = strstr(value, "event_timeout=");
1381 int tout = atoi(&pos[strlen("event_timeout=")]);
1383 rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1384 dbg(rules->udev, "event timout=%i\n", tout);
1386 pos = strstr(value, "string_escape=");
1388 pos = &pos[strlen("string_escape=")];
1389 if (strncmp(pos, "none", strlen("none")) == 0)
1390 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1391 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1392 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1394 if (strstr(value, "all_partitions") != NULL) {
1395 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1397 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1398 dbg(rules->udev, "creation of partition nodes requested\n");
1403 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1407 err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n"
1408 "please fix it in %s:%u", filename, lineno);
1410 /* skip line if not any valid key was found */
1414 /* add rule token */
1415 if (add_token(rules, &rule_tmp.rule) != 0)
1418 /* add tokens to list, sorted by type */
1419 if (sort_token(rules, &rule_tmp) != 0)
1423 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1427 static int parse_file(struct udev_rules *rules, const char *filename)
1430 unsigned int filename_off;
1431 unsigned int first_token;
1432 char line[UTIL_LINE_SIZE];
1436 info(rules->udev, "reading '%s' as rules file\n", filename);
1438 f = fopen(filename, "r");
1442 filename_off = add_string(rules, filename);
1443 first_token = rules->token_cur;
1445 while(fgets(line, sizeof(line), f) != NULL) {
1449 /* skip whitespace */
1452 while (isspace(key[0]))
1463 /* continue reading if backslash+newline is found */
1464 while (line[len-2] == '\\') {
1465 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1471 if (len+1 >= sizeof(line)) {
1472 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1475 add_rule(rules, key, filename, filename_off, line_nr);
1479 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1480 for (i = first_token+1; i < rules->token_cur; i++) {
1481 if (rules->tokens[i].type == TK_A_GOTO) {
1482 char *label = &rules->buf[rules->tokens[i].key.value_off];
1485 for (j = i+1; j < rules->token_cur; j++) {
1486 if (rules->tokens[j].type != TK_RULE)
1488 if (rules->tokens[j].rule.label_off == 0)
1490 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1492 rules->tokens[i].key.rule_goto = j;
1494 if (rules->tokens[i].key.rule_goto == 0)
1495 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1501 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1505 char filename[UTIL_PATH_SIZE];
1507 dbg(udev, "open directory '%s'\n", dirname);
1508 dir = opendir(dirname);
1510 err(udev, "unable to open '%s': %m\n", dirname);
1516 if (ent == NULL || ent->d_name[0] == '\0')
1519 if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
1522 /* look for file matching with specified suffix */
1523 if (suffix != NULL) {
1526 ext = strrchr(ent->d_name, '.');
1529 if (strcmp(ext, suffix) != 0)
1532 dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
1534 snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
1535 filename[sizeof(filename)-1] = '\0';
1536 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1543 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1545 struct udev_rules *rules;
1546 struct stat statbuf;
1547 char filename[PATH_MAX];
1548 struct udev_list_node file_list;
1549 struct udev_list_entry *file_loop, *file_tmp;
1550 unsigned int prev_rule;
1551 struct token end_token;
1554 rules = malloc(sizeof(struct udev_rules));
1557 memset(rules, 0x00, sizeof(struct udev_rules));
1559 rules->resolve_names = resolve_names;
1560 udev_list_init(&file_list);
1562 /* init token array and string buffer */
1563 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1564 if (rules->tokens == NULL)
1566 rules->token_max = PREALLOC_TOKEN;
1567 rules->buf = malloc(PREALLOC_STRBUF);
1568 if (rules->buf == NULL)
1570 rules->buf_max = PREALLOC_STRBUF;
1571 /* offset 0 is always '\0' */
1572 rules->buf[0] = '\0';
1574 info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1575 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1577 if (udev_get_rules_path(udev) != NULL) {
1578 /* custom rules location for testing */
1579 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1581 struct udev_list_node sort_list;
1582 struct udev_list_entry *sort_loop, *sort_tmp;
1584 /* read user/custom rules */
1585 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1587 /* read dynamic/temporary rules */
1588 util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
1589 util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
1590 if (stat(filename, &statbuf) != 0) {
1591 util_create_path(udev, filename);
1592 udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
1593 mkdir(filename, 0755);
1594 udev_selinux_resetfscreatecon(udev);
1596 udev_list_init(&sort_list);
1597 add_matching_files(udev, &sort_list, filename, ".rules");
1599 /* read default rules */
1600 add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
1602 /* sort all rules files by basename into list of files */
1603 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1604 const char *sort_name = udev_list_entry_get_name(sort_loop);
1605 const char *sort_base = strrchr(sort_name, '/');
1607 if (sort_base == NULL)
1610 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1611 const char *file_name = udev_list_entry_get_name(file_loop);
1612 const char *file_base = strrchr(file_name, '/');
1614 if (file_base == NULL)
1616 if (strcmp(file_base, sort_base) == 0) {
1617 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1618 file_name, sort_name);
1619 udev_list_entry_remove(sort_loop);
1623 if (strcmp(file_base, sort_base) > 0)
1626 if (sort_loop != NULL)
1627 udev_list_entry_move_before(sort_loop, file_loop);
1631 /* parse list of files */
1632 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1633 const char *file_name = udev_list_entry_get_name(file_loop);
1635 if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
1636 parse_file(rules, file_name);
1638 info(udev, "can not read '%s'\n", file_name);
1639 udev_list_entry_remove(file_loop);
1642 memset(&end_token, 0x00, sizeof(struct token));
1643 end_token.type = TK_END;
1644 add_token(rules, &end_token);
1646 /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */
1648 for (i = 1; i < rules->token_cur; i++) {
1649 if (rules->tokens[i].type == TK_RULE) {
1650 rules->tokens[prev_rule].rule.next_rule = i;
1655 /* shrink allocated token and string buffer */
1656 if (rules->token_cur < rules->token_max) {
1657 struct token *tokens;
1659 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1660 if (tokens != NULL || rules->token_cur == 0) {
1661 rules->tokens = tokens;
1662 rules->token_max = rules->token_cur;
1665 if (rules->buf_cur < rules->buf_max) {
1668 buf = realloc(rules->buf, rules->buf_cur);
1669 if (buf != NULL || rules->buf_cur == 0) {
1671 rules->buf_max = rules->buf_cur;
1674 info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1675 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1677 /* cleanup uid/gid cache */
1680 rules->uids_cur = 0;
1681 rules->uids_max = 0;
1684 rules->gids_cur = 0;
1685 rules->gids_max = 0;
1691 void udev_rules_unref(struct udev_rules *rules)
1695 free(rules->tokens);
1702 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1704 const char *key_name = token_str[token->type];
1705 char *key_value = &rules->buf[token->key.value_off];
1712 switch (token->key.glob) {
1714 match = (strcmp(key_value, val) == 0);
1717 match = (fnmatch(key_value, val, 0) == 0);
1721 char value[UTIL_PATH_SIZE];
1723 util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
1725 while (key_value != NULL) {
1726 pos = strchr(key_value, '|');
1731 dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
1732 match = (strcmp(key_value, val) == 0);
1741 char value[UTIL_PATH_SIZE];
1743 util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
1745 while (key_value != NULL) {
1746 pos = strchr(key_value, '|');
1751 dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
1752 match = (fnmatch(key_value, val, 0) == 0);
1764 if (match && (token->key.op == OP_MATCH)) {
1765 dbg(rules->udev, "%s is true (matching value)\n", key_name);
1768 if (!match && (token->key.op == OP_NOMATCH)) {
1769 dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
1772 dbg(rules->udev, "%s is not true\n", key_name);
1776 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
1778 char attr[UTIL_PATH_SIZE];
1779 const char *key_name = &rules->buf[cur->key.attr_off];
1780 const char *key_value = &rules->buf[cur->key.value_off];
1781 char value[UTIL_NAME_SIZE] = "";
1784 util_strlcpy(attr, key_name, sizeof(attr));
1785 util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
1786 if (value[0] == '\0') {
1789 val = udev_device_get_sysattr_value(dev, key_name);
1791 util_strlcpy(value, val, sizeof(value));
1796 /* strip trailing whitespace of value, if not asked to match for it */
1797 len = strlen(key_value);
1798 if (len > 0 && !isspace(key_value[len-1])) {
1799 len = strlen(value);
1800 while (len > 0 && isspace(value[--len]))
1802 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
1804 return match_key(rules, cur, value);
1813 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
1818 if (rules->tokens == NULL)
1821 /* loop through token list, match, run actions or forward to next rule */
1822 cur = &rules->tokens[0];
1824 while (cur != NULL && cur->type != TK_END) {
1825 enum escape_type esc = ESCAPE_UNSET;
1828 dump_token(rules, cur);
1829 switch (cur->type) {
1836 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
1840 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
1844 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
1849 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
1850 struct udev_list_entry *list_entry;
1853 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
1854 const char *devlink;
1856 devlink = &udev_list_entry_get_name(list_entry)[devlen];
1857 if (match_key(rules, cur, devlink) == 0) {
1867 if (match_key(rules, cur, event->name) != 0)
1872 struct udev_list_entry *list_entry;
1873 const char *key_name = &rules->buf[cur->key.attr_off];
1876 list_entry = udev_device_get_properties_list_entry(event->dev);
1877 list_entry = udev_list_entry_get_by_name(list_entry, key_name);
1878 value = udev_list_entry_get_value(list_entry);
1879 if (value == NULL) {
1880 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
1883 if (match_key(rules, cur, value))
1887 case TK_M_SUBSYSTEM:
1888 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
1892 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
1897 char filename[UTIL_PATH_SIZE];
1900 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1901 udev_event_apply_format(event, filename, sizeof(filename));
1902 found = (wait_for_file(event->dev, filename, 10) == 0);
1903 if (!found && (cur->key.op != OP_NOMATCH))
1908 if (match_attr(rules, event->dev, event, cur) != 0)
1912 case TK_M_SUBSYSTEMS:
1918 /* get whole sequence of parent matches */
1920 while (next->type < TK_M_PARENTS_MAX)
1923 /* loop over parents */
1924 event->dev_parent = event->dev;
1928 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
1929 /* loop over sequence of parent match keys */
1930 for (key = cur; key < next; key++ ) {
1931 dump_token(rules, key);
1934 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
1937 case TK_M_SUBSYSTEMS:
1938 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
1942 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
1946 if (match_attr(rules, event->dev_parent, event, key) != 0)
1952 dbg(event->udev, "parent key matched\n");
1954 dbg(event->udev, "all parent keys matched\n");
1955 /* all keys matched */
1959 event->dev_parent = udev_device_get_parent(event->dev_parent);
1960 if (event->dev_parent == NULL)
1963 /* move behind our sequence of parent match keys */
1969 char filename[UTIL_PATH_SIZE];
1970 struct stat statbuf;
1973 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1974 udev_event_apply_format(event, filename, sizeof(filename));
1975 if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0)
1976 if (filename[0] != '/') {
1977 char tmp[UTIL_PATH_SIZE];
1979 util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp));
1980 util_strlcat(tmp, "/", sizeof(tmp));
1981 util_strlcat(tmp, filename, sizeof(tmp));
1982 util_strlcpy(filename, tmp, sizeof(filename));
1985 attr_subst_subdir(filename, sizeof(filename));
1987 match = (stat(filename, &statbuf) == 0);
1988 info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
1989 if (match && cur->key.mode > 0) {
1990 match = ((statbuf.st_mode & cur->key.mode) > 0);
1991 info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
1992 match ? "matches" : "does not match", cur->key.mode);
1994 if (match && cur->key.op == OP_NOMATCH)
1996 if (!match && cur->key.op == OP_MATCH)
2002 char program[UTIL_PATH_SIZE];
2004 char result[UTIL_PATH_SIZE];
2006 free(event->program_result);
2007 event->program_result = NULL;
2008 util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program));
2009 udev_event_apply_format(event, program, sizeof(program));
2010 envp = udev_device_get_properties_envp(event->dev);
2011 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
2012 if (cur->key.op != OP_NOMATCH)
2017 util_remove_trailing_chars(result, '\n');
2018 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2019 count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
2021 info(event->udev, "%i character(s) replaced\n" , count);
2023 event->program_result = strdup(result);
2024 dbg(event->udev, "storing result '%s'\n", event->program_result);
2025 if (cur->key.op == OP_NOMATCH)
2030 case TK_M_IMPORT_FILE:
2032 char import[UTIL_PATH_SIZE];
2034 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
2035 udev_event_apply_format(event, import, sizeof(import));
2036 if (import_file_into_properties(event->dev, import) != 0)
2037 if (cur->key.op != OP_NOMATCH)
2041 case TK_M_IMPORT_PROG:
2043 char import[UTIL_PATH_SIZE];
2045 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
2046 udev_event_apply_format(event, import, sizeof(import));
2047 if (import_program_into_properties(event->dev, import) != 0)
2048 if (cur->key.op != OP_NOMATCH)
2052 case TK_M_IMPORT_PARENT:
2054 char import[UTIL_PATH_SIZE];
2056 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
2057 udev_event_apply_format(event, import, sizeof(import));
2058 if (import_parent_into_properties(event->dev, import) != 0)
2059 if (cur->key.op != OP_NOMATCH)
2064 if (match_key(rules, cur, event->program_result) != 0)
2068 case TK_A_IGNORE_DEVICE:
2069 event->ignore_device = 1;
2072 case TK_A_STRING_ESCAPE_NONE:
2075 case TK_A_STRING_ESCAPE_REPLACE:
2076 esc = ESCAPE_REPLACE;
2078 case TK_A_NUM_FAKE_PART:
2079 if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0)
2081 if (udev_device_get_sysnum(event->dev) != NULL)
2083 udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
2085 case TK_A_DEVLINK_PRIO:
2086 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2090 char owner[UTIL_NAME_SIZE];
2092 if (event->owner_final)
2094 if (cur->key.op == OP_ASSIGN_FINAL)
2095 event->owner_final = 1;
2096 util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner));
2097 udev_event_apply_format(event, owner, sizeof(owner));
2098 event->uid = util_lookup_user(event->udev, owner);
2103 char group[UTIL_NAME_SIZE];
2105 if (event->group_final)
2107 if (cur->key.op == OP_ASSIGN_FINAL)
2108 event->group_final = 1;
2109 util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
2110 udev_event_apply_format(event, group, sizeof(group));
2111 event->gid = util_lookup_group(event->udev, group);
2116 char mode[UTIL_NAME_SIZE];
2119 if (event->mode_final)
2121 if (cur->key.op == OP_ASSIGN_FINAL)
2122 event->mode_final = 1;
2123 util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
2124 udev_event_apply_format(event, mode, sizeof(mode));
2125 event->mode = strtol(mode, &endptr, 8);
2126 if (endptr[0] != '\0') {
2127 err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
2133 if (event->owner_final)
2135 if (cur->key.op == OP_ASSIGN_FINAL)
2136 event->owner_final = 1;
2137 event->uid = cur->key.uid;
2140 if (event->group_final)
2142 if (cur->key.op == OP_ASSIGN_FINAL)
2143 event->group_final = 1;
2144 event->gid = cur->key.gid;
2147 if (event->mode_final)
2149 if (cur->key.op == OP_ASSIGN_FINAL)
2150 event->mode_final = 1;
2151 event->mode = cur->key.mode;
2155 const char *name = &rules->buf[cur->key.attr_off];
2156 char *value = &rules->buf[cur->key.value_off];
2158 if (value[0] != '\0') {
2159 char temp_value[UTIL_NAME_SIZE];
2160 struct udev_list_entry *entry;
2162 util_strlcpy(temp_value, value, sizeof(temp_value));
2163 udev_event_apply_format(event, temp_value, sizeof(temp_value));
2164 entry = udev_device_add_property(event->dev, name, temp_value);
2166 udev_list_entry_set_flag(entry, 1);
2168 udev_device_add_property(event->dev, name, NULL);
2174 const char *name = &rules->buf[cur->key.value_off];
2175 char name_str[UTIL_PATH_SIZE];
2178 if (event->name_final)
2180 if (cur->key.op == OP_ASSIGN_FINAL)
2181 event->name_final = 1;
2182 if (name[0] == '\0') {
2187 util_strlcpy(name_str, name, sizeof(name_str));
2188 udev_event_apply_format(event, name_str, sizeof(name_str));
2189 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2190 count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
2192 info(event->udev, "%i character(s) replaced\n", count);
2194 event->name = strdup(name_str);
2200 char temp[UTIL_PATH_SIZE];
2201 char filename[UTIL_PATH_SIZE];
2205 if (event->devlink_final)
2207 if (major(udev_device_get_devnum(event->dev)) == 0)
2209 if (cur->key.op == OP_ASSIGN_FINAL)
2210 event->devlink_final = 1;
2211 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2212 udev_device_cleanup_devlinks_list(event->dev);
2214 /* allow multiple symlinks separated by spaces */
2215 util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
2216 udev_event_apply_format(event, temp, sizeof(temp));
2217 if (esc == ESCAPE_UNSET)
2218 count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
2219 else if (esc == ESCAPE_REPLACE)
2220 count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
2222 info(event->udev, "%i character(s) replaced\n" , count);
2223 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2225 while (isspace(pos[0]))
2227 next = strchr(pos, ' ');
2230 info(event->udev, "add symlink '%s'\n", pos);
2231 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2232 util_strlcat(filename, "/", sizeof(filename));
2233 util_strlcat(filename, pos, sizeof(filename));
2234 udev_device_add_devlink(event->dev, filename);
2235 while (isspace(next[1]))
2238 next = strchr(pos, ' ');
2240 if (pos[0] != '\0') {
2241 info(event->udev, "add symlink '%s'\n", pos);
2242 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2243 util_strlcat(filename, "/", sizeof(filename));
2244 util_strlcat(filename, pos, sizeof(filename));
2245 udev_device_add_devlink(event->dev, filename);
2249 case TK_A_EVENT_TIMEOUT:
2250 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2252 case TK_A_IGNORE_REMOVE:
2253 udev_device_set_ignore_remove(event->dev, 1);
2257 const char *key_name = &rules->buf[cur->key.attr_off];
2258 char attr[UTIL_PATH_SIZE];
2259 char value[UTIL_NAME_SIZE];
2262 util_strlcpy(attr, key_name, sizeof(attr));
2263 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) {
2264 util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr));
2265 util_strlcat(attr, "/", sizeof(attr));
2266 util_strlcat(attr, key_name, sizeof(attr));
2269 attr_subst_subdir(attr, sizeof(attr));
2271 util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value));
2272 udev_event_apply_format(event, value, sizeof(value));
2273 info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
2274 f = fopen(attr, "w");
2277 if (fprintf(f, "%s", value) <= 0)
2278 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2281 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2287 struct udev_list_entry *list_entry;
2289 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2290 udev_list_cleanup_entries(event->udev, &event->run_list);
2291 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2292 &rules->buf[cur->key.value_off], NULL, 1, 0);
2293 if (cur->key.ignore_error)
2294 udev_list_entry_set_flag(list_entry, 1);
2298 cur = &rules->tokens[cur->key.rule_goto];
2300 case TK_A_LAST_RULE:
2303 case TK_M_PARENTS_MAX:
2307 err(rules->udev, "wrong type %u\n", cur->type);
2314 /* fast-forward to next rule */
2315 idx = rule->rule.next_rule;
2318 dbg(rules->udev, "forward to rule: %u\n", idx);
2319 cur = &rules->tokens[idx];