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[] = {
49 [OP_NOMATCH] = "nomatch",
50 [OP_MATCH_MAX] = "match-max",
53 [OP_ASSIGN] = "assign",
54 [OP_ASSIGN_FINAL] = "assign-final",
57 /* tokens of a rule are sorted/handled in this order */
62 TK_M_ACTION, /* val */
63 TK_M_DEVPATH, /* val */
64 TK_M_KERNEL, /* val */
65 TK_M_DEVLINK, /* val */
67 TK_M_ENV, /* val, attr */
68 TK_M_SUBSYSTEM, /* val */
69 TK_M_DRIVER, /* val */
70 TK_M_WAITFOR, /* val */
71 TK_M_ATTR, /* val, attr */
73 TK_M_KERNELS, /* val */
74 TK_M_SUBSYSTEMS, /* val */
75 TK_M_DRIVERS, /* val */
76 TK_M_ATTRS, /* val, attr */
79 TK_M_TEST, /* val, mode_t */
80 TK_M_PROGRAM, /* val */
81 TK_M_IMPORT_FILE, /* val */
82 TK_M_IMPORT_PROG, /* val */
83 TK_M_IMPORT_PARENT, /* val */
84 TK_M_RESULT, /* val */
87 TK_A_STRING_ESCAPE_NONE,
88 TK_A_STRING_ESCAPE_REPLACE,
89 TK_A_NUM_FAKE_PART, /* int */
90 TK_A_DEVLINK_PRIO, /* int */
94 TK_A_OWNER_ID, /* uid_t */
95 TK_A_GROUP_ID, /* gid_t */
96 TK_A_MODE_ID, /* mode_t */
97 TK_A_ENV, /* val, attr */
99 TK_A_DEVLINK, /* val */
100 TK_A_EVENT_TIMEOUT, /* int */
102 TK_A_ATTR, /* val, attr */
103 TK_A_RUN, /* val, bool */
104 TK_A_GOTO, /* size_t */
110 static const char *token_str[] = {
111 [TK_UNDEF] = "UNDEF",
114 [TK_M_ACTION] = "M ACTION",
115 [TK_M_DEVPATH] = "M DEVPATH",
116 [TK_M_KERNEL] = "M KERNEL",
117 [TK_M_DEVLINK] = "M DEVLINK",
118 [TK_M_NAME] = "M NAME",
119 [TK_M_ENV] = "M ENV",
120 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
121 [TK_M_DRIVER] = "M DRIVER",
122 [TK_M_WAITFOR] = "M WAITFOR",
123 [TK_M_ATTR] = "M ATTR",
125 [TK_M_KERNELS] = "M KERNELS",
126 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
127 [TK_M_DRIVERS] = "M DRIVERS",
128 [TK_M_ATTRS] = "M ATTRS",
129 [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
131 [TK_M_TEST] = "M TEST",
132 [TK_M_PROGRAM] = "M PROGRAM",
133 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
134 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
135 [TK_M_IMPORT_PARENT] = "M MPORT_PARENT",
136 [TK_M_RESULT] = "M RESULT",
138 [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE",
139 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
140 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
141 [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART",
142 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
143 [TK_A_OWNER] = "A OWNER",
144 [TK_A_GROUP] = "A GROUP",
145 [TK_A_MODE] = "A MODE",
146 [TK_A_OWNER_ID] = "A OWNER_ID",
147 [TK_A_GROUP_ID] = "A GROUP_ID",
148 [TK_A_MODE_ID] = "A MODE_ID",
149 [TK_A_ENV] = "A ENV",
150 [TK_A_NAME] = "A NAME",
151 [TK_A_DEVLINK] = "A DEVLINK",
152 [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
153 [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE",
154 [TK_A_ATTR] = "A ATTR",
155 [TK_A_RUN] = "A RUN",
156 [TK_A_GOTO] = "A GOTO",
157 [TK_A_LAST_RULE] = "A LAST_RULE",
163 enum token_type type;
166 unsigned int next_rule;
167 unsigned int label_off;
168 unsigned int filename_off;
171 enum operation_type op;
172 unsigned int value_off;
174 unsigned int attr_off;
177 unsigned int rule_goto;
191 struct udev_rules *rules;
193 struct token token[MAX_TK];
194 unsigned int token_cur;
198 unsigned int name_off;
209 /* every key in the rules file becomes a token */
210 struct token *tokens;
211 unsigned int token_cur;
212 unsigned int token_max;
214 /* all key strings are copied to a single string buffer */
218 unsigned int buf_count;
220 /* during rule parsing, we cache uid/gid lookup results */
221 struct uid_gid *uids;
222 unsigned int uids_cur;
223 unsigned int uids_max;
224 struct uid_gid *gids;
225 unsigned int gids_cur;
226 unsigned int gids_max;
229 /* NOTE: we could lookup and return existing strings, or tails of strings */
230 static int add_string(struct udev_rules *rules, const char *str)
232 size_t len = strlen(str)+1;
235 /* offset 0 is always '\0' */
239 /* grow buffer if needed */
240 if (rules->buf_cur + len+1 >= rules->buf_max) {
244 /* double the buffer size */
245 add = rules->buf_max;
249 buf = realloc(rules->buf, rules->buf_max + add);
252 info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
254 rules->buf_max += add;
256 off = rules->buf_cur;
257 memcpy(&rules->buf[rules->buf_cur], str, len);
258 rules->buf_cur += len;
263 static int add_token(struct udev_rules *rules, struct token *token)
266 /* grow buffer if needed */
267 if (rules->token_cur+1 >= rules->token_max) {
268 struct token *tokens;
271 /* double the buffer size */
272 add = rules->token_max;
276 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
279 info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
280 rules->tokens = tokens;
281 rules->token_max += add;
283 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
288 static uid_t add_uid(struct udev_rules *rules, const char *owner)
294 /* lookup, if we know it already */
295 for (i = 0; i < rules->uids_cur; i++) {
296 off = rules->uids[i].name_off;
297 if (strcmp(&rules->buf[off], owner) == 0) {
298 uid = rules->uids[i].uid;
299 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
303 uid = util_lookup_user(rules->udev, owner);
305 /* grow buffer if needed */
306 if (rules->uids_cur+1 >= rules->uids_max) {
307 struct uid_gid *uids;
310 /* double the buffer size */
311 add = rules->uids_max;
315 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
318 info(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
320 rules->uids_max += add;
322 rules->uids[rules->uids_cur].uid = uid;
323 off = add_string(rules, owner);
326 rules->uids[rules->uids_cur].name_off = off;
331 static gid_t add_gid(struct udev_rules *rules, const char *group)
337 /* lookup, if we know it already */
338 for (i = 0; i < rules->gids_cur; i++) {
339 off = rules->gids[i].name_off;
340 if (strcmp(&rules->buf[off], group) == 0) {
341 gid = rules->gids[i].gid;
342 info(rules->udev, "return existing %u for '%s'\n", gid, group);
346 gid = util_lookup_group(rules->udev, group);
348 /* grow buffer if needed */
349 if (rules->gids_cur+1 >= rules->gids_max) {
350 struct uid_gid *gids;
353 /* double the buffer size */
354 add = rules->gids_max;
358 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
361 info(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
363 rules->gids_max += add;
365 rules->gids[rules->gids_cur].gid = gid;
366 off = add_string(rules, group);
369 rules->gids[rules->gids_cur].name_off = off;
374 static int import_property_from_string(struct udev_device *dev, char *line)
376 struct udev *udev = udev_device_get_udev(dev);
383 while (isspace(key[0]))
386 /* comment or empty line */
387 if (key[0] == '#' || key[0] == '\0')
390 /* split key/value */
391 val = strchr(key, '=');
398 while (isspace(val[0]))
405 while (isspace(key[len-1]))
409 /* terminate value */
413 while (isspace(val[len-1]))
421 if (val[0] == '"' || val[0] == '\'') {
422 if (val[len-1] != val[0]) {
423 info(udev, "inconsistent quoting: '%s', skip\n", line);
430 info(udev, "adding '%s'='%s'\n", key, val);
432 /* handle device, renamed by external tool, returning new path */
433 if (strcmp(key, "DEVPATH") == 0) {
434 char syspath[UTIL_PATH_SIZE];
436 info(udev, "updating devpath from '%s' to '%s'\n",
437 udev_device_get_devpath(dev), val);
438 util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
439 util_strlcat(syspath, val, sizeof(syspath));
440 udev_device_set_syspath(dev, syspath);
442 struct udev_list_entry *entry;
444 entry = udev_device_add_property(dev, key, val);
446 udev_list_entry_set_flag(entry, 1);
451 static int import_file_into_properties(struct udev_device *dev, const char *filename)
454 char line[UTIL_LINE_SIZE];
456 f = fopen(filename, "r");
459 while (fgets(line, sizeof(line), f) != NULL)
460 import_property_from_string(dev, line);
465 static int import_program_into_properties(struct udev_device *dev, const char *program)
467 struct udev *udev = udev_device_get_udev(dev);
473 envp = udev_device_get_properties_envp(dev);
474 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0)
478 while (line != NULL) {
481 pos = strchr(line, '\n');
486 import_property_from_string(dev, line);
492 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
494 struct udev *udev = udev_device_get_udev(dev);
495 struct udev_device *dev_parent;
496 struct udev_list_entry *list_entry;
498 dev_parent = udev_device_get_parent(dev);
499 if (dev_parent == NULL)
502 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
503 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
504 const char *key = udev_list_entry_get_name(list_entry);
505 const char *val = udev_list_entry_get_value(list_entry);
507 if (fnmatch(filter, key, 0) == 0) {
508 struct udev_list_entry *entry;
510 dbg(udev, "import key '%s=%s'\n", key, val);
511 entry = udev_device_add_property(dev, key, val);
513 udev_list_entry_set_flag(entry, 1);
519 #define WAIT_LOOP_PER_SECOND 50
520 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
522 struct udev *udev = udev_device_get_udev(dev);
523 char filepath[UTIL_PATH_SIZE];
524 char devicepath[UTIL_PATH_SIZE] = "";
526 int loop = timeout * WAIT_LOOP_PER_SECOND;
528 /* a relative path is a device attribute */
529 if (file[0] != '/') {
530 util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
531 util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
533 util_strlcpy(filepath, devicepath, sizeof(filepath));
534 util_strlcat(filepath, "/", sizeof(filepath));
535 util_strlcat(filepath, file, sizeof(filepath));
539 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
542 if (stat(file, &stats) == 0) {
543 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
546 /* make sure, the device did not disappear in the meantime */
547 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
548 info(udev, "device disappeared while waiting for '%s'\n", file);
551 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
552 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
554 info(udev, "waiting for '%s' failed\n", file);
558 static int attr_subst_subdir(char *attr, size_t len)
563 pos = strstr(attr, "/*/");
565 char str[UTIL_PATH_SIZE];
569 util_strlcpy(str, &pos[2], sizeof(str));
574 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
577 if (dent->d_name[0] == '.')
579 util_strlcat(attr, dent->d_name, len);
580 util_strlcat(attr, str, len);
581 if (stat(attr, &stats) == 0) {
590 util_strlcat(attr, str, len);
596 static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
602 if (linepos == NULL && linepos[0] == '\0')
605 /* skip whitespace */
606 while (isspace(linepos[0]) || linepos[0] == ',')
610 if (linepos[0] == '\0')
616 if (linepos[0] == '\0')
618 if (isspace(linepos[0]))
620 if (linepos[0] == '=')
622 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
623 if (linepos[1] == '=')
627 /* remember end of key */
630 /* skip whitespace after key */
631 while (isspace(linepos[0]))
633 if (linepos[0] == '\0')
636 /* get operation type */
637 if (linepos[0] == '=' && linepos[1] == '=') {
640 } else if (linepos[0] == '!' && linepos[1] == '=') {
643 } else if (linepos[0] == '+' && linepos[1] == '=') {
646 } else if (linepos[0] == '=') {
649 } else if (linepos[0] == ':' && linepos[1] == '=') {
650 *op = OP_ASSIGN_FINAL;
658 /* skip whitespace after operator */
659 while (isspace(linepos[0]))
661 if (linepos[0] == '\0')
665 if (linepos[0] == '"')
671 temp = strchr(linepos, '"');
676 dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value);
678 /* move line to next key */
683 /* extract possible KEY{attr} */
684 static char *get_key_attribute(struct udev *udev, char *str)
689 attr = strchr(str, '{');
692 pos = strchr(attr, '}');
694 err(udev, "missing closing brace for format\n");
698 dbg(udev, "attribute='%s'\n", attr);
704 static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
705 enum operation_type op,
706 const char *value, const void *data)
708 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
709 const char *attr = data;
722 case TK_M_SUBSYSTEMS:
725 case TK_M_IMPORT_FILE:
726 case TK_M_IMPORT_PROG:
727 case TK_M_IMPORT_PARENT:
735 token->key.value_off = add_string(rule_tmp->rules, value);
742 token->key.value_off = add_string(rule_tmp->rules, value);
743 token->key.attr_off = add_string(rule_tmp->rules, attr);
747 mode = *(mode_t *)data;
748 token->key.value_off = add_string(rule_tmp->rules, value);
749 token->key.mode = mode;
751 case TK_A_IGNORE_DEVICE:
752 case TK_A_STRING_ESCAPE_NONE:
753 case TK_A_STRING_ESCAPE_REPLACE:
754 case TK_A_IGNORE_REMOVE:
758 token->key.value_off = add_string(rule_tmp->rules, value);
759 token->key.ignore_error = *(int *)data;
761 case TK_A_NUM_FAKE_PART:
762 token->key.num_fake_part = *(int *)data;
764 case TK_A_DEVLINK_PRIO:
765 token->key.devlink_prio = *(int *)data;
768 token->key.uid = *(uid_t *)data;
771 token->key.gid = *(gid_t *)data;
774 token->key.mode = *(mode_t *)data;
776 case TK_A_EVENT_TIMEOUT:
777 token->key.event_timeout = *(int *)data;
780 case TK_M_PARENTS_MAX:
783 err(rule_tmp->rules->udev, "wrong type %u\n", type);
788 rule_tmp->token_cur++;
789 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
790 err(rule_tmp->rules->udev, "temporary rule array too small\n");
797 static void dump_token(struct udev_rules *rules, struct token *token)
799 enum token_type type = token->type;
800 enum operation_type op = token->key.op;
801 const char *value = &rules->buf[token->key.value_off];
802 const char *attr = &rules->buf[token->key.attr_off];
807 const char *tks_ptr = (char *)rules->tokens;
808 const char *tk_ptr = (char *)token;
809 unsigned int off = tk_ptr - tks_ptr;
811 dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
812 &rules->buf[token->rule.filename_off],
813 off / (unsigned int) sizeof(struct token), off,
814 token->rule.next_rule,
815 &rules->buf[token->rule.label_off]);
827 case TK_M_SUBSYSTEMS:
830 case TK_M_IMPORT_FILE:
831 case TK_M_IMPORT_PROG:
832 case TK_M_IMPORT_PARENT:
840 dbg(rules->udev, "%s %s '%s'\n", token_str[type], operation_str[op], value);
847 dbg(rules->udev, "%s %s '%s' '%s'\n", token_str[type], operation_str[op], attr, value);
849 case TK_A_IGNORE_DEVICE:
850 case TK_A_STRING_ESCAPE_NONE:
851 case TK_A_STRING_ESCAPE_REPLACE:
853 case TK_A_IGNORE_REMOVE:
854 dbg(rules->udev, "%s\n", token_str[type]);
857 dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode);
859 case TK_A_NUM_FAKE_PART:
860 dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part);
862 case TK_A_DEVLINK_PRIO:
863 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.devlink_prio);
866 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid);
869 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid);
872 dbg(rules->udev, "%s %s %#o\n", token_str[type], operation_str[op], token->key.mode);
874 case TK_A_EVENT_TIMEOUT:
875 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout);
878 dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto);
881 dbg(rules->udev, "* %s\n", token_str[type]);
883 case TK_M_PARENTS_MAX:
885 dbg(rules->udev, "unknown type %u\n", type);
890 static void dump_rules(struct udev_rules *rules)
894 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
896 rules->token_cur * sizeof(struct token),
899 for(i = 0; i < rules->token_cur; i++)
900 dump_token(rules, &rules->tokens[i]);
903 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
904 static inline void dump_rules(struct udev_rules *rules) {}
907 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
910 unsigned int start = 0;
911 unsigned int end = rule_tmp->token_cur;
913 for (i = 0; i < rule_tmp->token_cur; i++) {
914 enum token_type next_val = TK_UNDEF;
915 unsigned int next_idx;
918 /* find smallest value */
919 for (j = start; j < end; j++) {
920 if (rule_tmp->token[j].type == TK_UNDEF)
922 if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) {
923 next_val = rule_tmp->token[j].type;
928 /* add token and mark done */
929 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
931 rule_tmp->token[next_idx].type = TK_UNDEF;
934 if (next_idx == start)
936 if (next_idx+1 == end)
942 static int add_rule(struct udev_rules *rules, char *line,
943 const char *filename, unsigned int filename_off, unsigned int lineno)
949 struct rule_tmp rule_tmp;
951 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
952 rule_tmp.rules = rules;
953 rule_tmp.rule.type = TK_RULE;
954 rule_tmp.rule.rule.filename_off = filename_off;
960 enum operation_type op = OP_UNSET;
962 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
965 if (strcasecmp(key, "ACTION") == 0) {
966 if (op > OP_MATCH_MAX) {
967 err(rules->udev, "invalid ACTION operation\n");
970 rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
975 if (strcasecmp(key, "DEVPATH") == 0) {
976 if (op > OP_MATCH_MAX) {
977 err(rules->udev, "invalid DEVPATH operation\n");
980 rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
985 if (strcasecmp(key, "KERNEL") == 0) {
986 if (op > OP_MATCH_MAX) {
987 err(rules->udev, "invalid KERNEL operation\n");
990 rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
995 if (strcasecmp(key, "SUBSYSTEM") == 0) {
996 if (op > OP_MATCH_MAX) {
997 err(rules->udev, "invalid SUBSYSTEM operation\n");
1000 /* bus, class, subsystem events should all be the same */
1001 if (strcmp(value, "subsystem") == 0 ||
1002 strcmp(value, "bus") == 0 ||
1003 strcmp(value, "class") == 0) {
1004 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1005 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1006 "please fix it in %s:%u", value, filename, lineno);
1007 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1009 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1014 if (strcasecmp(key, "DRIVER") == 0) {
1015 if (op > OP_MATCH_MAX) {
1016 err(rules->udev, "invalid DRIVER operation\n");
1019 rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1024 if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1025 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1027 err(rules->udev, "error parsing ATTR attribute\n");
1030 if (op < OP_MATCH_MAX) {
1031 rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
1033 rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
1039 if (strcasecmp(key, "KERNELS") == 0 ||
1040 strcasecmp(key, "ID") == 0) {
1041 if (op > OP_MATCH_MAX) {
1042 err(rules->udev, "invalid KERNELS operation\n");
1045 rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1050 if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
1051 strcasecmp(key, "BUS") == 0) {
1052 if (op > OP_MATCH_MAX) {
1053 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1056 rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1061 if (strcasecmp(key, "DRIVERS") == 0) {
1062 if (op > OP_MATCH_MAX) {
1063 err(rules->udev, "invalid DRIVERS operation\n");
1066 rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1071 if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
1072 strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1073 if (op > OP_MATCH_MAX) {
1074 err(rules->udev, "invalid ATTRS operation\n");
1077 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1079 err(rules->udev, "error parsing ATTRS attribute\n");
1082 if (strncmp(attr, "device/", 7) == 0)
1083 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1084 "please fix it in %s:%u", filename, lineno);
1085 else if (strstr(attr, "../") != NULL)
1086 err(rules->udev, "do not reference parent sysfs directories directly, "
1087 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1088 rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
1093 if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1094 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1096 err(rules->udev, "error parsing ENV attribute\n");
1099 if (strncmp(attr, "PHYSDEV", 7) == 0)
1101 if (op < OP_MATCH_MAX) {
1102 if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1105 if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1112 if (strcasecmp(key, "PROGRAM") == 0) {
1113 rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1118 if (strcasecmp(key, "RESULT") == 0) {
1119 if (op > OP_MATCH_MAX) {
1120 err(rules->udev, "invalid RESULT operation\n");
1123 rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
1128 if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1129 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1130 if (attr != NULL && strstr(attr, "program")) {
1131 dbg(rules->udev, "IMPORT will be executed\n");
1132 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1134 } else if (attr != NULL && strstr(attr, "file")) {
1135 dbg(rules->udev, "IMPORT will be included as file\n");
1136 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1138 } else if (attr != NULL && strstr(attr, "parent")) {
1139 dbg(rules->udev, "IMPORT will include the parent values\n");
1140 rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1143 /* figure it out if it is executable */
1144 char file[UTIL_PATH_SIZE];
1146 struct stat statbuf;
1148 util_strlcpy(file, value, sizeof(file));
1149 pos = strchr(file, ' ');
1153 /* allow programs in /lib/udev called without the path */
1154 if (strchr(file, '/') == NULL) {
1155 util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
1156 util_strlcat(file, value, sizeof(file));
1157 pos = strchr(file, ' ');
1162 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1163 if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
1164 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1165 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1168 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1169 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1176 if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
1179 if (op > OP_MATCH_MAX) {
1180 err(rules->udev, "invalid TEST operation\n");
1183 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1185 mode = strtol(attr, NULL, 8);
1186 rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
1188 rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
1194 if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
1197 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1198 if (attr != NULL && strstr(attr, "ignore_error"))
1200 rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
1205 if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
1206 rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1211 if (strcasecmp(key, "LABEL") == 0) {
1212 rule_tmp.rule.rule.label_off = add_string(rules, value);
1217 if (strcasecmp(key, "GOTO") == 0) {
1218 rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1223 if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
1224 if (op < OP_MATCH_MAX) {
1225 rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
1227 if (value[0] == '\0')
1228 dbg(rules->udev, "name empty, node creation suppressed\n");
1229 rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
1230 attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
1232 if (strstr(attr, "all_partitions") != NULL) {
1233 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1235 dbg(rules->udev, "creation of partition nodes requested\n");
1236 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1238 if (strstr(attr, "ignore_remove") != NULL) {
1239 dbg(rules->udev, "remove event should be ignored\n");
1240 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1247 if (strcasecmp(key, "SYMLINK") == 0) {
1248 if (op < OP_MATCH_MAX)
1249 rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1251 rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
1256 if (strcasecmp(key, "OWNER") == 0) {
1260 uid = strtoul(value, &endptr, 10);
1261 if (endptr[0] == '\0') {
1262 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1263 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1264 uid = add_uid(rules, value);
1265 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1267 rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
1273 if (strcasecmp(key, "GROUP") == 0) {
1277 gid = strtoul(value, &endptr, 10);
1278 if (endptr[0] == '\0') {
1279 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1280 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1281 gid = add_gid(rules, value);
1282 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1284 rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
1290 if (strcasecmp(key, "MODE") == 0) {
1294 mode = strtol(value, &endptr, 8);
1295 if (endptr[0] == '\0')
1296 rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1298 rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
1303 if (strcasecmp(key, "OPTIONS") == 0) {
1306 if (strstr(value, "last_rule") != NULL) {
1307 dbg(rules->udev, "last rule to be applied\n");
1308 rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
1310 if (strstr(value, "ignore_device") != NULL) {
1311 dbg(rules->udev, "device should be ignored\n");
1312 rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
1314 if (strstr(value, "ignore_remove") != NULL) {
1315 dbg(rules->udev, "remove event should be ignored\n");
1316 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1318 pos = strstr(value, "link_priority=");
1320 int prio = atoi(&pos[strlen("link_priority=")]);
1322 rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1323 dbg(rules->udev, "link priority=%i\n", prio);
1325 pos = strstr(value, "event_timeout=");
1327 int tout = atoi(&pos[strlen("event_timeout=")]);
1329 rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1330 dbg(rules->udev, "event timout=%i\n", tout);
1332 pos = strstr(value, "string_escape=");
1334 pos = &pos[strlen("string_escape=")];
1335 if (strncmp(pos, "none", strlen("none")) == 0)
1336 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1337 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1338 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1340 if (strstr(value, "all_partitions") != NULL) {
1341 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1343 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1344 dbg(rules->udev, "creation of partition nodes requested\n");
1349 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1353 err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n"
1354 "please fix it in %s:%u", filename, lineno);
1356 /* skip line if not any valid key was found */
1360 /* add rule token */
1361 if (add_token(rules, &rule_tmp.rule) != 0)
1364 /* add tokens to list, sorted by type */
1365 if (sort_token(rules, &rule_tmp) != 0)
1369 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1373 static int parse_file(struct udev_rules *rules, const char *filename)
1376 unsigned int filename_off;
1377 unsigned int first_token;
1378 char line[UTIL_LINE_SIZE];
1382 info(rules->udev, "reading '%s' as rules file\n", filename);
1384 f = fopen(filename, "r");
1388 filename_off = add_string(rules, filename);
1389 first_token = rules->token_cur;
1391 while(fgets(line, sizeof(line), f) != NULL) {
1395 /* skip whitespace */
1398 while (isspace(key[0]))
1409 /* continue reading if backslash+newline is found */
1410 while (line[len-2] == '\\') {
1411 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1417 if (len+1 >= sizeof(line)) {
1418 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1421 add_rule(rules, key, filename, filename_off, line_nr);
1425 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1426 for (i = first_token+1; i < rules->token_cur; i++) {
1427 if (rules->tokens[i].type == TK_A_GOTO) {
1428 char *label = &rules->buf[rules->tokens[i].key.value_off];
1431 for (j = i+1; j < rules->token_cur; j++) {
1432 if (rules->tokens[j].type != TK_RULE)
1434 if (rules->tokens[j].rule.label_off == 0)
1436 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1438 rules->tokens[i].key.rule_goto = j;
1440 if (rules->tokens[i].key.rule_goto == 0)
1441 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1447 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1451 char filename[UTIL_PATH_SIZE];
1453 dbg(udev, "open directory '%s'\n", dirname);
1454 dir = opendir(dirname);
1456 err(udev, "unable to open '%s': %m\n", dirname);
1462 if (ent == NULL || ent->d_name[0] == '\0')
1465 if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
1468 /* look for file matching with specified suffix */
1469 if (suffix != NULL) {
1472 ext = strrchr(ent->d_name, '.');
1475 if (strcmp(ext, suffix) != 0)
1478 dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
1480 snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
1481 filename[sizeof(filename)-1] = '\0';
1482 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1489 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1491 struct udev_rules *rules;
1492 struct stat statbuf;
1493 char filename[PATH_MAX];
1494 struct udev_list_node file_list;
1495 struct udev_list_entry *file_loop, *file_tmp;
1496 unsigned int prev_rule;
1497 struct token end_token;
1500 rules = malloc(sizeof(struct udev_rules));
1503 memset(rules, 0x00, sizeof(struct udev_rules));
1505 rules->resolve_names = resolve_names;
1506 udev_list_init(&file_list);
1508 /* init token array and string buffer */
1509 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1510 if (rules->tokens == NULL)
1512 rules->token_max = PREALLOC_TOKEN;
1513 rules->buf = malloc(PREALLOC_STRBUF);
1514 if (rules->buf == NULL)
1516 rules->buf_max = PREALLOC_STRBUF;
1517 /* offset 0 is always '\0' */
1518 rules->buf[0] = '\0';
1520 info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1521 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1523 if (udev_get_rules_path(udev) != NULL) {
1524 /* custom rules location for testing */
1525 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1527 struct udev_list_node sort_list;
1528 struct udev_list_entry *sort_loop, *sort_tmp;
1530 /* read user/custom rules */
1531 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1533 /* read dynamic/temporary rules */
1534 util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
1535 util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
1536 if (stat(filename, &statbuf) != 0) {
1537 util_create_path(udev, filename);
1538 udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
1539 mkdir(filename, 0755);
1540 udev_selinux_resetfscreatecon(udev);
1542 udev_list_init(&sort_list);
1543 add_matching_files(udev, &sort_list, filename, ".rules");
1545 /* read default rules */
1546 add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
1548 /* sort all rules files by basename into list of files */
1549 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1550 const char *sort_name = udev_list_entry_get_name(sort_loop);
1551 const char *sort_base = strrchr(sort_name, '/');
1553 if (sort_base == NULL)
1556 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1557 const char *file_name = udev_list_entry_get_name(file_loop);
1558 const char *file_base = strrchr(file_name, '/');
1560 if (file_base == NULL)
1562 if (strcmp(file_base, sort_base) == 0) {
1563 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1564 file_name, sort_name);
1565 udev_list_entry_remove(sort_loop);
1569 if (strcmp(file_base, sort_base) > 0)
1572 if (sort_loop != NULL)
1573 udev_list_entry_move_before(sort_loop, file_loop);
1577 /* parse list of files */
1578 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1579 const char *file_name = udev_list_entry_get_name(file_loop);
1581 if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
1582 parse_file(rules, file_name);
1584 info(udev, "can not read '%s'\n", file_name);
1585 udev_list_entry_remove(file_loop);
1588 memset(&end_token, 0x00, sizeof(struct token));
1589 end_token.type = TK_END;
1590 add_token(rules, &end_token);
1592 /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */
1594 for (i = 1; i < rules->token_cur; i++) {
1595 if (rules->tokens[i].type == TK_RULE) {
1596 rules->tokens[prev_rule].rule.next_rule = i;
1601 /* shrink allocated token and string buffer */
1602 if (rules->token_cur < rules->token_max) {
1603 struct token *tokens;
1605 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1606 if (tokens != NULL || rules->token_cur == 0) {
1607 rules->tokens = tokens;
1608 rules->token_max = rules->token_cur;
1611 if (rules->buf_cur < rules->buf_max) {
1614 buf = realloc(rules->buf, rules->buf_cur);
1615 if (buf != NULL || rules->buf_cur == 0) {
1617 rules->buf_max = rules->buf_cur;
1620 info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1621 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1623 /* cleanup uid/gid cache */
1626 rules->uids_cur = 0;
1627 rules->uids_max = 0;
1630 rules->gids_cur = 0;
1631 rules->gids_max = 0;
1637 void udev_rules_unref(struct udev_rules *rules)
1641 free(rules->tokens);
1648 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1650 const char *key_name = token_str[token->type];
1651 char *key_value = &rules->buf[token->key.value_off];
1658 /* look for a matching string, parts are separated by '|' */
1659 if (strchr(key_value, '|') != NULL) {
1660 char value[UTIL_PATH_SIZE];
1662 util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
1664 while (key_value != NULL) {
1665 pos = strchr(key_value, '|');
1670 dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
1671 match = (fnmatch(key_value, val, 0) == 0);
1677 match = (fnmatch(key_value, val, 0) == 0);
1680 if (match && (token->key.op == OP_MATCH)) {
1681 dbg(rules->udev, "%s is true (matching value)\n", key_name);
1684 if (!match && (token->key.op == OP_NOMATCH)) {
1685 dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
1688 dbg(rules->udev, "%s is not true\n", key_name);
1692 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
1694 char attr[UTIL_PATH_SIZE];
1695 const char *key_name = &rules->buf[cur->key.attr_off];
1696 const char *key_value = &rules->buf[cur->key.value_off];
1697 char value[UTIL_NAME_SIZE] = "";
1700 util_strlcpy(attr, key_name, sizeof(attr));
1701 util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
1702 if (value[0] == '\0') {
1705 val = udev_device_get_sysattr_value(dev, key_name);
1707 util_strlcpy(value, val, sizeof(value));
1712 /* strip trailing whitespace of value, if not asked to match for it */
1713 len = strlen(key_value);
1714 if (len > 0 && !isspace(key_value[len-1])) {
1715 len = strlen(value);
1716 while (len > 0 && isspace(value[--len]))
1718 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
1720 return match_key(rules, cur, value);
1729 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
1734 if (rules->tokens == NULL)
1737 /* loop through token list, match, run actions or forward to next rule */
1738 cur = &rules->tokens[0];
1740 while (cur != NULL && cur->type != TK_END) {
1741 enum escape_type esc = ESCAPE_UNSET;
1744 dump_token(rules, cur);
1745 switch (cur->type) {
1752 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
1756 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
1760 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
1765 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
1766 struct udev_list_entry *list_entry;
1769 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
1770 const char *devlink;
1772 devlink = &udev_list_entry_get_name(list_entry)[devlen];
1773 if (match_key(rules, cur, devlink) == 0) {
1783 if (match_key(rules, cur, event->name) != 0)
1788 struct udev_list_entry *list_entry;
1789 const char *key_name = &rules->buf[cur->key.attr_off];
1792 list_entry = udev_device_get_properties_list_entry(event->dev);
1793 list_entry = udev_list_entry_get_by_name(list_entry, key_name);
1794 value = udev_list_entry_get_value(list_entry);
1795 if (value == NULL) {
1796 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
1799 if (match_key(rules, cur, value))
1803 case TK_M_SUBSYSTEM:
1804 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
1808 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
1813 char filename[UTIL_PATH_SIZE];
1816 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1817 udev_event_apply_format(event, filename, sizeof(filename));
1818 found = (wait_for_file(event->dev, filename, 10) == 0);
1819 if (!found && (cur->key.op != OP_NOMATCH))
1824 if (match_attr(rules, event->dev, event, cur) != 0)
1828 case TK_M_SUBSYSTEMS:
1834 /* get whole sequence of parent matches */
1836 while (next->type < TK_M_PARENTS_MAX)
1839 /* loop over parents */
1840 event->dev_parent = event->dev;
1844 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
1845 /* loop over sequence of parent match keys */
1846 for (key = cur; key < next; key++ ) {
1847 dump_token(rules, key);
1850 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
1853 case TK_M_SUBSYSTEMS:
1854 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
1858 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
1862 if (match_attr(rules, event->dev_parent, event, key) != 0)
1868 dbg(event->udev, "parent key matched\n");
1870 dbg(event->udev, "all parent keys matched\n");
1871 /* all keys matched */
1875 event->dev_parent = udev_device_get_parent(event->dev_parent);
1876 if (event->dev_parent == NULL)
1879 /* move behind our sequence of parent match keys */
1885 char filename[UTIL_PATH_SIZE];
1886 struct stat statbuf;
1889 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1890 udev_event_apply_format(event, filename, sizeof(filename));
1891 if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0)
1892 if (filename[0] != '/') {
1893 char tmp[UTIL_PATH_SIZE];
1895 util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp));
1896 util_strlcat(tmp, "/", sizeof(tmp));
1897 util_strlcat(tmp, filename, sizeof(tmp));
1898 util_strlcpy(filename, tmp, sizeof(filename));
1901 attr_subst_subdir(filename, sizeof(filename));
1903 match = (stat(filename, &statbuf) == 0);
1904 info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
1905 if (match && cur->key.mode > 0) {
1906 match = ((statbuf.st_mode & cur->key.mode) > 0);
1907 info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
1908 match ? "matches" : "does not match", cur->key.mode);
1910 if (match && cur->key.op == OP_NOMATCH)
1912 if (!match && cur->key.op == OP_MATCH)
1918 char program[UTIL_PATH_SIZE];
1920 char result[UTIL_PATH_SIZE];
1922 free(event->program_result);
1923 event->program_result = NULL;
1924 util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program));
1925 udev_event_apply_format(event, program, sizeof(program));
1926 envp = udev_device_get_properties_envp(event->dev);
1927 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
1928 if (cur->key.op != OP_NOMATCH)
1933 util_remove_trailing_chars(result, '\n');
1934 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
1935 count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
1937 info(event->udev, "%i character(s) replaced\n" , count);
1939 event->program_result = strdup(result);
1940 dbg(event->udev, "storing result '%s'\n", event->program_result);
1941 if (cur->key.op == OP_NOMATCH)
1946 case TK_M_IMPORT_FILE:
1948 char import[UTIL_PATH_SIZE];
1950 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1951 udev_event_apply_format(event, import, sizeof(import));
1952 if (import_file_into_properties(event->dev, import) != 0)
1953 if (cur->key.op != OP_NOMATCH)
1957 case TK_M_IMPORT_PROG:
1959 char import[UTIL_PATH_SIZE];
1961 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1962 udev_event_apply_format(event, import, sizeof(import));
1963 if (import_program_into_properties(event->dev, import) != 0)
1964 if (cur->key.op != OP_NOMATCH)
1968 case TK_M_IMPORT_PARENT:
1970 char import[UTIL_PATH_SIZE];
1972 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1973 udev_event_apply_format(event, import, sizeof(import));
1974 if (import_parent_into_properties(event->dev, import) != 0)
1975 if (cur->key.op != OP_NOMATCH)
1980 if (match_key(rules, cur, event->program_result) != 0)
1984 case TK_A_IGNORE_DEVICE:
1985 event->ignore_device = 1;
1988 case TK_A_STRING_ESCAPE_NONE:
1991 case TK_A_STRING_ESCAPE_REPLACE:
1992 esc = ESCAPE_REPLACE;
1994 case TK_A_NUM_FAKE_PART:
1995 if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0)
1997 if (udev_device_get_sysnum(event->dev) != NULL)
1999 udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
2001 case TK_A_DEVLINK_PRIO:
2002 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2006 char owner[UTIL_NAME_SIZE];
2008 if (event->owner_final)
2010 if (cur->key.op == OP_ASSIGN_FINAL)
2011 event->owner_final = 1;
2012 util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner));
2013 udev_event_apply_format(event, owner, sizeof(owner));
2014 event->uid = util_lookup_user(event->udev, owner);
2019 char group[UTIL_NAME_SIZE];
2021 if (event->group_final)
2023 if (cur->key.op == OP_ASSIGN_FINAL)
2024 event->group_final = 1;
2025 util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
2026 udev_event_apply_format(event, group, sizeof(group));
2027 event->gid = util_lookup_group(event->udev, group);
2032 char mode[UTIL_NAME_SIZE];
2035 if (event->mode_final)
2037 if (cur->key.op == OP_ASSIGN_FINAL)
2038 event->mode_final = 1;
2039 util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
2040 udev_event_apply_format(event, mode, sizeof(mode));
2041 event->mode = strtol(mode, &endptr, 8);
2042 if (endptr[0] != '\0') {
2043 err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
2049 if (event->owner_final)
2051 if (cur->key.op == OP_ASSIGN_FINAL)
2052 event->owner_final = 1;
2053 event->uid = cur->key.uid;
2056 if (event->group_final)
2058 if (cur->key.op == OP_ASSIGN_FINAL)
2059 event->group_final = 1;
2060 event->gid = cur->key.gid;
2063 if (event->mode_final)
2065 if (cur->key.op == OP_ASSIGN_FINAL)
2066 event->mode_final = 1;
2067 event->mode = cur->key.mode;
2071 const char *name = &rules->buf[cur->key.attr_off];
2072 char *value = &rules->buf[cur->key.value_off];
2074 if (value[0] != '\0') {
2075 char temp_value[UTIL_NAME_SIZE];
2076 struct udev_list_entry *entry;
2078 util_strlcpy(temp_value, value, sizeof(temp_value));
2079 udev_event_apply_format(event, temp_value, sizeof(temp_value));
2080 entry = udev_device_add_property(event->dev, name, temp_value);
2082 udev_list_entry_set_flag(entry, 1);
2084 udev_device_add_property(event->dev, name, NULL);
2090 const char *name = &rules->buf[cur->key.value_off];
2091 char name_str[UTIL_PATH_SIZE];
2094 if (event->name_final)
2096 if (cur->key.op == OP_ASSIGN_FINAL)
2097 event->name_final = 1;
2098 if (name[0] == '\0') {
2103 util_strlcpy(name_str, name, sizeof(name_str));
2104 udev_event_apply_format(event, name_str, sizeof(name_str));
2105 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2106 count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
2108 info(event->udev, "%i character(s) replaced\n", count);
2110 event->name = strdup(name_str);
2116 char temp[UTIL_PATH_SIZE];
2117 char filename[UTIL_PATH_SIZE];
2121 if (event->devlink_final)
2123 if (major(udev_device_get_devnum(event->dev)) == 0)
2125 if (cur->key.op == OP_ASSIGN_FINAL)
2126 event->devlink_final = 1;
2127 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2128 udev_device_cleanup_devlinks_list(event->dev);
2130 /* allow multiple symlinks separated by spaces */
2131 util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
2132 udev_event_apply_format(event, temp, sizeof(temp));
2133 if (esc == ESCAPE_UNSET)
2134 count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
2135 else if (esc == ESCAPE_REPLACE)
2136 count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
2138 info(event->udev, "%i character(s) replaced\n" , count);
2139 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2141 while (isspace(pos[0]))
2143 next = strchr(pos, ' ');
2146 info(event->udev, "add symlink '%s'\n", pos);
2147 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2148 util_strlcat(filename, "/", sizeof(filename));
2149 util_strlcat(filename, pos, sizeof(filename));
2150 udev_device_add_devlink(event->dev, filename);
2151 while (isspace(next[1]))
2154 next = strchr(pos, ' ');
2156 if (pos[0] != '\0') {
2157 info(event->udev, "add symlink '%s'\n", pos);
2158 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2159 util_strlcat(filename, "/", sizeof(filename));
2160 util_strlcat(filename, pos, sizeof(filename));
2161 udev_device_add_devlink(event->dev, filename);
2165 case TK_A_EVENT_TIMEOUT:
2166 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2168 case TK_A_IGNORE_REMOVE:
2169 udev_device_set_ignore_remove(event->dev, 1);
2173 const char *key_name = &rules->buf[cur->key.attr_off];
2174 char attr[UTIL_PATH_SIZE];
2175 char value[UTIL_NAME_SIZE];
2178 util_strlcpy(attr, key_name, sizeof(attr));
2179 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) {
2180 util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr));
2181 util_strlcat(attr, "/", sizeof(attr));
2182 util_strlcat(attr, key_name, sizeof(attr));
2185 attr_subst_subdir(attr, sizeof(attr));
2187 util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value));
2188 udev_event_apply_format(event, value, sizeof(value));
2189 info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
2190 f = fopen(attr, "w");
2193 if (fprintf(f, "%s", value) <= 0)
2194 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2197 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2203 struct udev_list_entry *list_entry;
2205 if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
2206 udev_list_cleanup_entries(event->udev, &event->run_list);
2207 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2208 &rules->buf[cur->key.value_off], NULL, 1, 0);
2209 if (cur->key.ignore_error)
2210 udev_list_entry_set_flag(list_entry, 1);
2214 cur = &rules->tokens[cur->key.rule_goto];
2216 case TK_A_LAST_RULE:
2219 case TK_M_PARENTS_MAX:
2222 err(rules->udev, "wrong type %u\n", cur->type);
2229 /* fast-forward to next rule */
2230 idx = rule->rule.next_rule;
2233 dbg(rules->udev, "forward to rule: %u\n", idx);
2234 cur = &rules->tokens[idx];