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:="" */
44 static const char *operation_str[] = {
45 [KEY_OP_MATCH] = "match",
46 [KEY_OP_NOMATCH] = "nomatch",
48 [KEY_OP_ASSIGN] = "assign",
49 [KEY_OP_ASSIGN_FINAL] = "assign-final",
52 /* tokens of a rule are sorted/handled in this order */
57 TK_M_ACTION, /* val */
58 TK_M_DEVPATH, /* val */
59 TK_M_KERNEL, /* val */
60 TK_M_DEVLINK, /* val */
62 TK_M_ENV, /* val, attr */
63 TK_M_SUBSYSTEM, /* val */
64 TK_M_DRIVER, /* val */
65 TK_M_WAITFOR, /* val */
66 TK_M_ATTR, /* val, attr */
68 TK_M_KERNELS, /* val */
69 TK_M_SUBSYSTEMS, /* val */
70 TK_M_DRIVERS, /* val */
71 TK_M_ATTRS, /* val, attr */
74 TK_M_TEST, /* val, mode_t */
75 TK_M_PROGRAM, /* val */
76 TK_M_IMPORT_FILE, /* val */
77 TK_M_IMPORT_PROG, /* val */
78 TK_M_IMPORT_PARENT, /* val */
79 TK_M_RESULT, /* val */
82 TK_A_STRING_ESCAPE_NONE,
83 TK_A_STRING_ESCAPE_REPLACE,
84 TK_A_NUM_FAKE_PART, /* int */
85 TK_A_DEVLINK_PRIO, /* int */
89 TK_A_OWNER_ID, /* uid_t */
90 TK_A_GROUP_ID, /* gid_t */
91 TK_A_MODE_ID, /* mode_t */
92 TK_A_ENV, /* val, attr */
94 TK_A_DEVLINK, /* val */
95 TK_A_EVENT_TIMEOUT, /* int */
97 TK_A_ATTR, /* val, attr */
98 TK_A_RUN, /* val, bool */
99 TK_A_GOTO, /* size_t */
105 static const char *token_str[] = {
106 [TK_UNDEF] = "UNDEF",
109 [TK_M_ACTION] = "M ACTION",
110 [TK_M_DEVPATH] = "M DEVPATH",
111 [TK_M_KERNEL] = "M KERNEL",
112 [TK_M_DEVLINK] = "M DEVLINK",
113 [TK_M_NAME] = "M NAME",
114 [TK_M_ENV] = "M ENV",
115 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
116 [TK_M_DRIVER] = "M DRIVER",
117 [TK_M_WAITFOR] = "M WAITFOR",
118 [TK_M_ATTR] = "M ATTR",
120 [TK_M_KERNELS] = "M KERNELS",
121 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
122 [TK_M_DRIVERS] = "M DRIVERS",
123 [TK_M_ATTRS] = "M ATTRS",
124 [TK_PARENTS_MAX] = "PARENTS_MAX",
126 [TK_M_TEST] = "M TEST",
127 [TK_M_PROGRAM] = "M PROGRAM",
128 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
129 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
130 [TK_M_IMPORT_PARENT] = "M MPORT_PARENT",
131 [TK_M_RESULT] = "M RESULT",
133 [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE",
134 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
135 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
136 [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART",
137 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
138 [TK_A_OWNER] = "A OWNER",
139 [TK_A_GROUP] = "A GROUP",
140 [TK_A_MODE] = "A MODE",
141 [TK_A_OWNER_ID] = "A OWNER_ID",
142 [TK_A_GROUP_ID] = "A GROUP_ID",
143 [TK_A_MODE_ID] = "A MODE_ID",
144 [TK_A_ENV] = "A ENV",
145 [TK_A_NAME] = "A NAME",
146 [TK_A_DEVLINK] = "A DEVLINK",
147 [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
148 [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE",
149 [TK_A_ATTR] = "A ATTR",
150 [TK_A_RUN] = "A RUN",
151 [TK_A_GOTO] = "A GOTO",
152 [TK_A_LAST_RULE] = "A LAST_RULE",
158 enum token_type type;
161 unsigned int next_rule;
162 unsigned int label_off;
163 unsigned int filename_off;
166 enum key_operation op;
167 unsigned int value_off;
169 unsigned int attr_off;
172 unsigned int rule_goto;
186 struct udev_rules *rules;
188 struct token token[MAX_TK];
189 unsigned int token_cur;
193 unsigned int name_off;
204 /* every key in the rules file becomes a token */
205 struct token *tokens;
206 unsigned int token_cur;
207 unsigned int token_max;
209 /* all key strings are copied to a single string buffer */
213 unsigned int buf_count;
215 /* during rule parsing, we cache uid/gid lookup results */
216 struct uid_gid *uids;
217 unsigned int uids_cur;
218 unsigned int uids_max;
219 struct uid_gid *gids;
220 unsigned int gids_cur;
221 unsigned int gids_max;
224 /* NOTE: we could lookup and return existing strings, or tails of strings */
225 static int add_string(struct udev_rules *rules, const char *str)
227 size_t len = strlen(str)+1;
230 /* offset 0 is always '\0' */
234 /* grow buffer if needed */
235 if (rules->buf_cur + len+1 >= rules->buf_max) {
239 /* double the buffer size */
240 add = rules->buf_max;
244 buf = realloc(rules->buf, rules->buf_max + add);
247 info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
249 rules->buf_max += add;
251 off = rules->buf_cur;
252 memcpy(&rules->buf[rules->buf_cur], str, len);
253 rules->buf_cur += len;
258 static int add_token(struct udev_rules *rules, struct token *token)
261 /* grow buffer if needed */
262 if (rules->token_cur+1 >= rules->token_max) {
263 struct token *tokens;
266 /* double the buffer size */
267 add = rules->token_max;
271 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
274 info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
275 rules->tokens = tokens;
276 rules->token_max += add;
278 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
283 static uid_t add_uid(struct udev_rules *rules, const char *owner)
289 /* lookup, if we know it already */
290 for (i = 0; i < rules->uids_cur; i++) {
291 off = rules->uids[i].name_off;
292 if (strcmp(&rules->buf[off], owner) == 0) {
293 uid = rules->uids[i].uid;
294 dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
298 uid = util_lookup_user(rules->udev, owner);
300 /* grow buffer if needed */
301 if (rules->uids_cur+1 >= rules->uids_max) {
302 struct uid_gid *uids;
305 /* double the buffer size */
306 add = rules->uids_max;
310 uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
313 info(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
315 rules->uids_max += add;
317 rules->uids[rules->uids_cur].uid = uid;
318 off = add_string(rules, owner);
321 rules->uids[rules->uids_cur].name_off = off;
326 static gid_t add_gid(struct udev_rules *rules, const char *group)
332 /* lookup, if we know it already */
333 for (i = 0; i < rules->gids_cur; i++) {
334 off = rules->gids[i].name_off;
335 if (strcmp(&rules->buf[off], group) == 0) {
336 gid = rules->gids[i].gid;
337 info(rules->udev, "return existing %u for '%s'\n", gid, group);
341 gid = util_lookup_group(rules->udev, group);
343 /* grow buffer if needed */
344 if (rules->gids_cur+1 >= rules->gids_max) {
345 struct uid_gid *gids;
348 /* double the buffer size */
349 add = rules->gids_max;
353 gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
356 info(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
358 rules->gids_max += add;
360 rules->gids[rules->gids_cur].gid = gid;
361 off = add_string(rules, group);
364 rules->gids[rules->gids_cur].name_off = off;
369 static int import_property_from_string(struct udev_device *dev, char *line)
371 struct udev *udev = udev_device_get_udev(dev);
378 while (isspace(key[0]))
381 /* comment or empty line */
382 if (key[0] == '#' || key[0] == '\0')
385 /* split key/value */
386 val = strchr(key, '=');
393 while (isspace(val[0]))
400 while (isspace(key[len-1]))
404 /* terminate value */
408 while (isspace(val[len-1]))
416 if (val[0] == '"' || val[0] == '\'') {
417 if (val[len-1] != val[0]) {
418 info(udev, "inconsistent quoting: '%s', skip\n", line);
425 info(udev, "adding '%s'='%s'\n", key, val);
427 /* handle device, renamed by external tool, returning new path */
428 if (strcmp(key, "DEVPATH") == 0) {
429 char syspath[UTIL_PATH_SIZE];
431 info(udev, "updating devpath from '%s' to '%s'\n",
432 udev_device_get_devpath(dev), val);
433 util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
434 util_strlcat(syspath, val, sizeof(syspath));
435 udev_device_set_syspath(dev, syspath);
437 struct udev_list_entry *entry;
439 entry = udev_device_add_property(dev, key, val);
441 udev_list_entry_set_flag(entry, 1);
446 static int import_file_into_properties(struct udev_device *dev, const char *filename)
449 char line[UTIL_LINE_SIZE];
451 f = fopen(filename, "r");
454 while (fgets(line, sizeof(line), f) != NULL)
455 import_property_from_string(dev, line);
460 static int import_program_into_properties(struct udev_device *dev, const char *program)
462 struct udev *udev = udev_device_get_udev(dev);
468 envp = udev_device_get_properties_envp(dev);
469 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0)
473 while (line != NULL) {
476 pos = strchr(line, '\n');
481 import_property_from_string(dev, line);
487 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
489 struct udev *udev = udev_device_get_udev(dev);
490 struct udev_device *dev_parent;
491 struct udev_list_entry *list_entry;
493 dev_parent = udev_device_get_parent(dev);
494 if (dev_parent == NULL)
497 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
498 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
499 const char *key = udev_list_entry_get_name(list_entry);
500 const char *val = udev_list_entry_get_value(list_entry);
502 if (fnmatch(filter, key, 0) == 0) {
503 struct udev_list_entry *entry;
505 dbg(udev, "import key '%s=%s'\n", key, val);
506 entry = udev_device_add_property(dev, key, val);
508 udev_list_entry_set_flag(entry, 1);
514 #define WAIT_LOOP_PER_SECOND 50
515 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
517 struct udev *udev = udev_device_get_udev(dev);
518 char filepath[UTIL_PATH_SIZE];
519 char devicepath[UTIL_PATH_SIZE] = "";
521 int loop = timeout * WAIT_LOOP_PER_SECOND;
523 /* a relative path is a device attribute */
524 if (file[0] != '/') {
525 util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
526 util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
528 util_strlcpy(filepath, devicepath, sizeof(filepath));
529 util_strlcat(filepath, "/", sizeof(filepath));
530 util_strlcat(filepath, file, sizeof(filepath));
534 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
537 if (stat(file, &stats) == 0) {
538 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
541 /* make sure, the device did not disappear in the meantime */
542 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
543 info(udev, "device disappeared while waiting for '%s'\n", file);
546 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
547 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
549 info(udev, "waiting for '%s' failed\n", file);
553 static int attr_subst_subdir(char *attr, size_t len)
558 pos = strstr(attr, "/*/");
560 char str[UTIL_PATH_SIZE];
564 util_strlcpy(str, &pos[2], sizeof(str));
569 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
572 if (dent->d_name[0] == '.')
574 util_strlcat(attr, dent->d_name, len);
575 util_strlcat(attr, str, len);
576 if (stat(attr, &stats) == 0) {
585 util_strlcat(attr, str, len);
591 static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value)
597 if (linepos == NULL && linepos[0] == '\0')
600 /* skip whitespace */
601 while (isspace(linepos[0]) || linepos[0] == ',')
605 if (linepos[0] == '\0')
611 if (linepos[0] == '\0')
613 if (isspace(linepos[0]))
615 if (linepos[0] == '=')
617 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
618 if (linepos[1] == '=')
622 /* remember end of key */
625 /* skip whitespace after key */
626 while (isspace(linepos[0]))
628 if (linepos[0] == '\0')
631 /* get operation type */
632 if (linepos[0] == '=' && linepos[1] == '=') {
635 } else if (linepos[0] == '!' && linepos[1] == '=') {
636 *op = KEY_OP_NOMATCH;
638 } else if (linepos[0] == '+' && linepos[1] == '=') {
641 } else if (linepos[0] == '=') {
644 } else if (linepos[0] == ':' && linepos[1] == '=') {
645 *op = KEY_OP_ASSIGN_FINAL;
653 /* skip whitespace after operator */
654 while (isspace(linepos[0]))
656 if (linepos[0] == '\0')
660 if (linepos[0] == '"')
666 temp = strchr(linepos, '"');
671 dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value);
673 /* move line to next key */
678 /* extract possible KEY{attr} */
679 static char *get_key_attribute(struct udev *udev, char *str)
684 attr = strchr(str, '{');
687 pos = strchr(attr, '}');
689 err(udev, "missing closing brace for format\n");
693 dbg(udev, "attribute='%s'\n", attr);
699 static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
700 enum key_operation op,
701 const char *value, const void *data)
703 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
704 const char *attr = data;
717 case TK_M_SUBSYSTEMS:
720 case TK_M_IMPORT_FILE:
721 case TK_M_IMPORT_PROG:
722 case TK_M_IMPORT_PARENT:
730 token->key.value_off = add_string(rule_tmp->rules, value);
737 token->key.value_off = add_string(rule_tmp->rules, value);
738 token->key.attr_off = add_string(rule_tmp->rules, attr);
742 mode = *(mode_t *)data;
743 token->key.value_off = add_string(rule_tmp->rules, value);
744 token->key.mode = mode;
746 case TK_A_IGNORE_DEVICE:
747 case TK_A_STRING_ESCAPE_NONE:
748 case TK_A_STRING_ESCAPE_REPLACE:
749 case TK_A_IGNORE_REMOVE:
753 token->key.value_off = add_string(rule_tmp->rules, value);
754 token->key.ignore_error = *(int *)data;
756 case TK_A_NUM_FAKE_PART:
757 token->key.num_fake_part = *(int *)data;
759 case TK_A_DEVLINK_PRIO:
760 token->key.devlink_prio = *(int *)data;
763 token->key.uid = *(uid_t *)data;
766 token->key.gid = *(gid_t *)data;
769 token->key.mode = *(mode_t *)data;
771 case TK_A_EVENT_TIMEOUT:
772 token->key.event_timeout = *(int *)data;
778 err(rule_tmp->rules->udev, "wrong type %u\n", type);
783 rule_tmp->token_cur++;
784 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
785 err(rule_tmp->rules->udev, "temporary rule array too small\n");
792 static void dump_token(struct udev_rules *rules, struct token *token)
794 enum token_type type = token->type;
795 enum key_operation op = token->key.op;
796 const char *value = &rules->buf[token->key.value_off];
797 const char *attr = &rules->buf[token->key.attr_off];
802 const char *tks_ptr = (char *)rules->tokens;
803 const char *tk_ptr = (char *)token;
804 unsigned int off = tk_ptr - tks_ptr;
806 dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
807 &rules->buf[token->rule.filename_off],
808 off / (unsigned int) sizeof(struct token), off,
809 token->rule.next_rule,
810 &rules->buf[token->rule.label_off]);
822 case TK_M_SUBSYSTEMS:
825 case TK_M_IMPORT_FILE:
826 case TK_M_IMPORT_PROG:
827 case TK_M_IMPORT_PARENT:
835 dbg(rules->udev, "%s %s '%s'\n", token_str[type], operation_str[op], value);
842 dbg(rules->udev, "%s %s '%s' '%s'\n", token_str[type], operation_str[op], attr, value);
844 case TK_A_IGNORE_DEVICE:
845 case TK_A_STRING_ESCAPE_NONE:
846 case TK_A_STRING_ESCAPE_REPLACE:
848 case TK_A_IGNORE_REMOVE:
849 dbg(rules->udev, "%s\n", token_str[type]);
852 dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode);
854 case TK_A_NUM_FAKE_PART:
855 dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part);
857 case TK_A_DEVLINK_PRIO:
858 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.devlink_prio);
861 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid);
864 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid);
867 dbg(rules->udev, "%s %s %#o\n", token_str[type], operation_str[op], token->key.mode);
869 case TK_A_EVENT_TIMEOUT:
870 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout);
873 dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto);
876 dbg(rules->udev, "* %s\n", token_str[type]);
880 dbg(rules->udev, "unknown type %u\n", type);
885 static void dump_rules(struct udev_rules *rules)
889 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
891 rules->token_cur * sizeof(struct token),
894 for(i = 0; i < rules->token_cur; i++)
895 dump_token(rules, &rules->tokens[i]);
898 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
899 static inline void dump_rules(struct udev_rules *rules) {}
902 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
905 unsigned int start = 0;
906 unsigned int end = rule_tmp->token_cur;
908 for (i = 0; i < rule_tmp->token_cur; i++) {
909 enum token_type next_val = TK_UNDEF;
910 unsigned int next_idx;
913 /* find smallest value */
914 for (j = start; j < end; j++) {
915 if (rule_tmp->token[j].type == TK_UNDEF)
917 if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) {
918 next_val = rule_tmp->token[j].type;
923 /* add token and mark done */
924 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
926 rule_tmp->token[next_idx].type = TK_UNDEF;
929 if (next_idx == start)
931 if (next_idx+1 == end)
937 static int add_rule(struct udev_rules *rules, char *line,
938 const char *filename, unsigned int filename_off, unsigned int lineno)
944 struct rule_tmp rule_tmp;
946 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
947 rule_tmp.rules = rules;
948 rule_tmp.rule.type = TK_RULE;
949 rule_tmp.rule.rule.filename_off = filename_off;
955 enum key_operation op = KEY_OP_UNSET;
957 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
960 if (strcasecmp(key, "ACTION") == 0) {
961 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
962 err(rules->udev, "invalid ACTION operation\n");
965 rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
970 if (strcasecmp(key, "DEVPATH") == 0) {
971 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
972 err(rules->udev, "invalid DEVPATH operation\n");
975 rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
980 if (strcasecmp(key, "KERNEL") == 0) {
981 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
982 err(rules->udev, "invalid KERNEL operation\n");
985 rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
990 if (strcasecmp(key, "SUBSYSTEM") == 0) {
991 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
992 err(rules->udev, "invalid SUBSYSTEM operation\n");
995 /* bus, class, subsystem events should all be the same */
996 if (strcmp(value, "subsystem") == 0 ||
997 strcmp(value, "bus") == 0 ||
998 strcmp(value, "class") == 0) {
999 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
1000 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
1001 "please fix it in %s:%u", value, filename, lineno);
1002 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
1004 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
1009 if (strcasecmp(key, "DRIVER") == 0) {
1010 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1011 err(rules->udev, "invalid DRIVER operation\n");
1014 rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
1019 if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
1020 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
1022 err(rules->udev, "error parsing ATTR attribute\n");
1025 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
1026 rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
1028 rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
1034 if (strcasecmp(key, "KERNELS") == 0 ||
1035 strcasecmp(key, "ID") == 0) {
1036 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1037 err(rules->udev, "invalid KERNELS operation\n");
1040 rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
1045 if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
1046 strcasecmp(key, "BUS") == 0) {
1047 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1048 err(rules->udev, "invalid SUBSYSTEMS operation\n");
1051 rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
1056 if (strcasecmp(key, "DRIVERS") == 0) {
1057 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1058 err(rules->udev, "invalid DRIVERS operation\n");
1061 rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
1066 if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
1067 strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
1068 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1069 err(rules->udev, "invalid ATTRS operation\n");
1072 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
1074 err(rules->udev, "error parsing ATTRS attribute\n");
1077 if (strncmp(attr, "device/", 7) == 0)
1078 err(rules->udev, "the 'device' link may not be available in a future kernel, "
1079 "please fix it in %s:%u", filename, lineno);
1080 else if (strstr(attr, "../") != NULL)
1081 err(rules->udev, "do not reference parent sysfs directories directly, "
1082 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
1083 rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
1088 if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
1089 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
1091 err(rules->udev, "error parsing ENV attribute\n");
1094 if (strncmp(attr, "PHYSDEV", 7) == 0)
1096 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
1097 if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
1100 if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
1107 if (strcasecmp(key, "PROGRAM") == 0) {
1108 rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1113 if (strcasecmp(key, "RESULT") == 0) {
1114 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1115 err(rules->udev, "invalid RESULT operation\n");
1118 rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
1123 if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1124 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1125 if (attr != NULL && strstr(attr, "program")) {
1126 dbg(rules->udev, "IMPORT will be executed\n");
1127 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1129 } else if (attr != NULL && strstr(attr, "file")) {
1130 dbg(rules->udev, "IMPORT will be included as file\n");
1131 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1133 } else if (attr != NULL && strstr(attr, "parent")) {
1134 dbg(rules->udev, "IMPORT will include the parent values\n");
1135 rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1138 /* figure it out if it is executable */
1139 char file[UTIL_PATH_SIZE];
1141 struct stat statbuf;
1143 util_strlcpy(file, value, sizeof(file));
1144 pos = strchr(file, ' ');
1148 /* allow programs in /lib/udev called without the path */
1149 if (strchr(file, '/') == NULL) {
1150 util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
1151 util_strlcat(file, value, sizeof(file));
1152 pos = strchr(file, ' ');
1157 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1158 if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
1159 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1160 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1163 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1164 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1171 if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
1174 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1175 err(rules->udev, "invalid TEST operation\n");
1178 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1180 mode = strtol(attr, NULL, 8);
1181 rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
1183 rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
1189 if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
1192 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1193 if (attr != NULL && strstr(attr, "ignore_error"))
1195 rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
1200 if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
1201 rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1206 if (strcasecmp(key, "LABEL") == 0) {
1207 rule_tmp.rule.rule.label_off = add_string(rules, value);
1212 if (strcasecmp(key, "GOTO") == 0) {
1213 rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1218 if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
1219 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
1220 rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
1222 if (value[0] == '\0')
1223 dbg(rules->udev, "name empty, node creation suppressed\n");
1224 rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
1225 attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
1227 if (strstr(attr, "all_partitions") != NULL) {
1228 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1230 dbg(rules->udev, "creation of partition nodes requested\n");
1231 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1233 if (strstr(attr, "ignore_remove") != NULL) {
1234 dbg(rules->udev, "remove event should be ignored\n");
1235 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1242 if (strcasecmp(key, "SYMLINK") == 0) {
1243 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH)
1244 rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1246 rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
1251 if (strcasecmp(key, "OWNER") == 0) {
1255 uid = strtoul(value, &endptr, 10);
1256 if (endptr[0] == '\0') {
1257 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1258 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1259 uid = add_uid(rules, value);
1260 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1262 rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
1268 if (strcasecmp(key, "GROUP") == 0) {
1272 gid = strtoul(value, &endptr, 10);
1273 if (endptr[0] == '\0') {
1274 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1275 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1276 gid = add_gid(rules, value);
1277 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1279 rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
1285 if (strcasecmp(key, "MODE") == 0) {
1289 mode = strtol(value, &endptr, 8);
1290 if (endptr[0] == '\0')
1291 rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1293 rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
1298 if (strcasecmp(key, "OPTIONS") == 0) {
1301 if (strstr(value, "last_rule") != NULL) {
1302 dbg(rules->udev, "last rule to be applied\n");
1303 rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
1305 if (strstr(value, "ignore_device") != NULL) {
1306 dbg(rules->udev, "device should be ignored\n");
1307 rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
1309 if (strstr(value, "ignore_remove") != NULL) {
1310 dbg(rules->udev, "remove event should be ignored\n");
1311 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1313 pos = strstr(value, "link_priority=");
1315 int prio = atoi(&pos[strlen("link_priority=")]);
1317 rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1318 dbg(rules->udev, "link priority=%i\n", prio);
1320 pos = strstr(value, "event_timeout=");
1322 int tout = atoi(&pos[strlen("event_timeout=")]);
1324 rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1325 dbg(rules->udev, "event timout=%i\n", tout);
1327 pos = strstr(value, "string_escape=");
1329 pos = &pos[strlen("string_escape=")];
1330 if (strncmp(pos, "none", strlen("none")) == 0)
1331 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1332 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1333 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1335 if (strstr(value, "all_partitions") != NULL) {
1336 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1338 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1339 dbg(rules->udev, "creation of partition nodes requested\n");
1344 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1348 err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n"
1349 "please fix it in %s:%u", filename, lineno);
1351 /* skip line if not any valid key was found */
1355 /* add rule token */
1356 if (add_token(rules, &rule_tmp.rule) != 0)
1359 /* add tokens to list, sorted by type */
1360 if (sort_token(rules, &rule_tmp) != 0)
1364 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1368 static int parse_file(struct udev_rules *rules, const char *filename)
1371 unsigned int filename_off;
1372 unsigned int first_token;
1373 char line[UTIL_LINE_SIZE];
1377 info(rules->udev, "reading '%s' as rules file\n", filename);
1379 f = fopen(filename, "r");
1383 filename_off = add_string(rules, filename);
1384 first_token = rules->token_cur;
1386 while(fgets(line, sizeof(line), f) != NULL) {
1390 /* skip whitespace */
1393 while (isspace(key[0]))
1404 /* continue reading if backslash+newline is found */
1405 while (line[len-2] == '\\') {
1406 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1412 if (len+1 >= sizeof(line)) {
1413 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1416 add_rule(rules, key, filename, filename_off, line_nr);
1420 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1421 for (i = first_token+1; i < rules->token_cur; i++) {
1422 if (rules->tokens[i].type == TK_A_GOTO) {
1423 char *label = &rules->buf[rules->tokens[i].key.value_off];
1426 for (j = i+1; j < rules->token_cur; j++) {
1427 if (rules->tokens[j].type != TK_RULE)
1429 if (rules->tokens[j].rule.label_off == 0)
1431 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1433 rules->tokens[i].key.rule_goto = j;
1435 if (rules->tokens[i].key.rule_goto == 0)
1436 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1442 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1446 char filename[UTIL_PATH_SIZE];
1448 dbg(udev, "open directory '%s'\n", dirname);
1449 dir = opendir(dirname);
1451 err(udev, "unable to open '%s': %m\n", dirname);
1457 if (ent == NULL || ent->d_name[0] == '\0')
1460 if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
1463 /* look for file matching with specified suffix */
1464 if (suffix != NULL) {
1467 ext = strrchr(ent->d_name, '.');
1470 if (strcmp(ext, suffix) != 0)
1473 dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
1475 snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
1476 filename[sizeof(filename)-1] = '\0';
1477 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1484 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1486 struct udev_rules *rules;
1487 struct stat statbuf;
1488 char filename[PATH_MAX];
1489 struct udev_list_node file_list;
1490 struct udev_list_entry *file_loop, *file_tmp;
1491 unsigned int prev_rule;
1492 struct token end_token;
1495 rules = malloc(sizeof(struct udev_rules));
1498 memset(rules, 0x00, sizeof(struct udev_rules));
1500 rules->resolve_names = resolve_names;
1501 udev_list_init(&file_list);
1503 /* init token array and string buffer */
1504 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1505 if (rules->tokens == NULL)
1507 rules->token_max = PREALLOC_TOKEN;
1508 rules->buf = malloc(PREALLOC_STRBUF);
1509 if (rules->buf == NULL)
1511 rules->buf_max = PREALLOC_STRBUF;
1512 /* offset 0 is always '\0' */
1513 rules->buf[0] = '\0';
1515 info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1516 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1518 if (udev_get_rules_path(udev) != NULL) {
1519 /* custom rules location for testing */
1520 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1522 struct udev_list_node sort_list;
1523 struct udev_list_entry *sort_loop, *sort_tmp;
1525 /* read user/custom rules */
1526 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1528 /* read dynamic/temporary rules */
1529 util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
1530 util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
1531 if (stat(filename, &statbuf) != 0) {
1532 util_create_path(udev, filename);
1533 udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
1534 mkdir(filename, 0755);
1535 udev_selinux_resetfscreatecon(udev);
1537 udev_list_init(&sort_list);
1538 add_matching_files(udev, &sort_list, filename, ".rules");
1540 /* read default rules */
1541 add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
1543 /* sort all rules files by basename into list of files */
1544 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1545 const char *sort_name = udev_list_entry_get_name(sort_loop);
1546 const char *sort_base = strrchr(sort_name, '/');
1548 if (sort_base == NULL)
1551 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1552 const char *file_name = udev_list_entry_get_name(file_loop);
1553 const char *file_base = strrchr(file_name, '/');
1555 if (file_base == NULL)
1557 if (strcmp(file_base, sort_base) == 0) {
1558 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1559 file_name, sort_name);
1560 udev_list_entry_remove(sort_loop);
1564 if (strcmp(file_base, sort_base) > 0)
1567 if (sort_loop != NULL)
1568 udev_list_entry_move_before(sort_loop, file_loop);
1572 /* parse list of files */
1573 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1574 const char *file_name = udev_list_entry_get_name(file_loop);
1576 if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
1577 parse_file(rules, file_name);
1579 info(udev, "can not read '%s'\n", file_name);
1580 udev_list_entry_remove(file_loop);
1583 memset(&end_token, 0x00, sizeof(struct token));
1584 end_token.type = TK_END;
1585 add_token(rules, &end_token);
1587 /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */
1589 for (i = 1; i < rules->token_cur; i++) {
1590 if (rules->tokens[i].type == TK_RULE) {
1591 rules->tokens[prev_rule].rule.next_rule = i;
1596 /* shrink allocated token and string buffer */
1597 if (rules->token_cur < rules->token_max) {
1598 struct token *tokens;
1600 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1601 if (tokens != NULL || rules->token_cur == 0) {
1602 rules->tokens = tokens;
1603 rules->token_max = rules->token_cur;
1606 if (rules->buf_cur < rules->buf_max) {
1609 buf = realloc(rules->buf, rules->buf_cur);
1610 if (buf != NULL || rules->buf_cur == 0) {
1612 rules->buf_max = rules->buf_cur;
1615 info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1616 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1618 /* cleanup uid/gid cache */
1621 rules->uids_cur = 0;
1622 rules->uids_max = 0;
1625 rules->gids_cur = 0;
1626 rules->gids_max = 0;
1632 void udev_rules_unref(struct udev_rules *rules)
1636 free(rules->tokens);
1643 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1645 const char *key_name = token_str[token->type];
1646 char *key_value = &rules->buf[token->key.value_off];
1653 /* look for a matching string, parts are separated by '|' */
1654 if (strchr(key_value, '|') != NULL) {
1655 char value[UTIL_PATH_SIZE];
1657 util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
1659 while (key_value != NULL) {
1660 pos = strchr(key_value, '|');
1665 dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
1666 match = (fnmatch(key_value, val, 0) == 0);
1672 match = (fnmatch(key_value, val, 0) == 0);
1675 if (match && (token->key.op == KEY_OP_MATCH)) {
1676 dbg(rules->udev, "%s is true (matching value)\n", key_name);
1679 if (!match && (token->key.op == KEY_OP_NOMATCH)) {
1680 dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
1683 dbg(rules->udev, "%s is not true\n", key_name);
1687 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
1689 char attr[UTIL_PATH_SIZE];
1690 const char *key_name = &rules->buf[cur->key.attr_off];
1691 const char *key_value = &rules->buf[cur->key.value_off];
1692 char value[UTIL_NAME_SIZE] = "";
1695 util_strlcpy(attr, key_name, sizeof(attr));
1696 util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
1697 if (value[0] == '\0') {
1700 val = udev_device_get_sysattr_value(dev, key_name);
1702 util_strlcpy(value, val, sizeof(value));
1707 /* strip trailing whitespace of value, if not asked to match for it */
1708 len = strlen(key_value);
1709 if (len > 0 && !isspace(key_value[len-1])) {
1710 len = strlen(value);
1711 while (len > 0 && isspace(value[--len]))
1713 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
1715 return match_key(rules, cur, value);
1724 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
1729 if (rules->tokens == NULL)
1732 /* loop through token list, match, run actions or forward to next rule */
1733 cur = &rules->tokens[0];
1735 while (cur != NULL && cur->type != TK_END) {
1736 enum escape_type esc = ESCAPE_UNSET;
1739 dump_token(rules, cur);
1740 switch (cur->type) {
1747 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
1751 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
1755 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
1760 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
1761 struct udev_list_entry *list_entry;
1764 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
1765 const char *devlink;
1767 devlink = &udev_list_entry_get_name(list_entry)[devlen];
1768 if (match_key(rules, cur, devlink) == 0) {
1778 if (match_key(rules, cur, event->name) != 0)
1783 struct udev_list_entry *list_entry;
1784 const char *key_name = &rules->buf[cur->key.attr_off];
1787 list_entry = udev_device_get_properties_list_entry(event->dev);
1788 list_entry = udev_list_entry_get_by_name(list_entry, key_name);
1789 value = udev_list_entry_get_value(list_entry);
1790 if (value == NULL) {
1791 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
1794 if (match_key(rules, cur, value))
1798 case TK_M_SUBSYSTEM:
1799 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
1803 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
1808 char filename[UTIL_PATH_SIZE];
1811 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1812 udev_event_apply_format(event, filename, sizeof(filename));
1813 found = (wait_for_file(event->dev, filename, 10) == 0);
1814 if (!found && (cur->key.op != KEY_OP_NOMATCH))
1819 if (match_attr(rules, event->dev, event, cur) != 0)
1823 case TK_M_SUBSYSTEMS:
1829 /* get whole sequence of parent matches */
1831 while (next->type < TK_PARENTS_MAX)
1834 /* loop over parents */
1835 event->dev_parent = event->dev;
1839 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
1840 /* loop over sequence of parent match keys */
1841 for (key = cur; key < next; key++ ) {
1842 dump_token(rules, key);
1845 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
1848 case TK_M_SUBSYSTEMS:
1849 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
1853 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
1857 if (match_attr(rules, event->dev_parent, event, key) != 0)
1863 dbg(event->udev, "parent key matched\n");
1865 dbg(event->udev, "all parent keys matched\n");
1866 /* all keys matched */
1870 event->dev_parent = udev_device_get_parent(event->dev_parent);
1871 if (event->dev_parent == NULL)
1874 /* move behind our sequence of parent match keys */
1880 char filename[UTIL_PATH_SIZE];
1881 struct stat statbuf;
1884 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1885 udev_event_apply_format(event, filename, sizeof(filename));
1886 if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0)
1887 if (filename[0] != '/') {
1888 char tmp[UTIL_PATH_SIZE];
1890 util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp));
1891 util_strlcat(tmp, "/", sizeof(tmp));
1892 util_strlcat(tmp, filename, sizeof(tmp));
1893 util_strlcpy(filename, tmp, sizeof(filename));
1896 attr_subst_subdir(filename, sizeof(filename));
1898 match = (stat(filename, &statbuf) == 0);
1899 info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
1900 if (match && cur->key.mode > 0) {
1901 match = ((statbuf.st_mode & cur->key.mode) > 0);
1902 info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
1903 match ? "matches" : "does not match", cur->key.mode);
1905 if (match && cur->key.op == KEY_OP_NOMATCH)
1907 if (!match && cur->key.op == KEY_OP_MATCH)
1913 char program[UTIL_PATH_SIZE];
1915 char result[UTIL_PATH_SIZE];
1917 free(event->program_result);
1918 event->program_result = NULL;
1919 util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program));
1920 udev_event_apply_format(event, program, sizeof(program));
1921 envp = udev_device_get_properties_envp(event->dev);
1922 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
1923 if (cur->key.op != KEY_OP_NOMATCH)
1928 util_remove_trailing_chars(result, '\n');
1929 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
1930 count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
1932 info(event->udev, "%i character(s) replaced\n" , count);
1934 event->program_result = strdup(result);
1935 dbg(event->udev, "storing result '%s'\n", event->program_result);
1936 if (cur->key.op == KEY_OP_NOMATCH)
1941 case TK_M_IMPORT_FILE:
1943 char import[UTIL_PATH_SIZE];
1945 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1946 udev_event_apply_format(event, import, sizeof(import));
1947 if (import_file_into_properties(event->dev, import) != 0)
1948 if (cur->key.op != KEY_OP_NOMATCH)
1952 case TK_M_IMPORT_PROG:
1954 char import[UTIL_PATH_SIZE];
1956 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1957 udev_event_apply_format(event, import, sizeof(import));
1958 if (import_program_into_properties(event->dev, import) != 0)
1959 if (cur->key.op != KEY_OP_NOMATCH)
1963 case TK_M_IMPORT_PARENT:
1965 char import[UTIL_PATH_SIZE];
1967 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1968 udev_event_apply_format(event, import, sizeof(import));
1969 if (import_parent_into_properties(event->dev, import) != 0)
1970 if (cur->key.op != KEY_OP_NOMATCH)
1975 if (match_key(rules, cur, event->program_result) != 0)
1979 case TK_A_IGNORE_DEVICE:
1980 event->ignore_device = 1;
1983 case TK_A_STRING_ESCAPE_NONE:
1986 case TK_A_STRING_ESCAPE_REPLACE:
1987 esc = ESCAPE_REPLACE;
1989 case TK_A_NUM_FAKE_PART:
1990 if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0)
1992 if (udev_device_get_sysnum(event->dev) != NULL)
1994 udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
1996 case TK_A_DEVLINK_PRIO:
1997 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
2001 char owner[UTIL_NAME_SIZE];
2003 if (event->owner_final)
2005 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2006 event->owner_final = 1;
2007 util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner));
2008 udev_event_apply_format(event, owner, sizeof(owner));
2009 event->uid = util_lookup_user(event->udev, owner);
2014 char group[UTIL_NAME_SIZE];
2016 if (event->group_final)
2018 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2019 event->group_final = 1;
2020 util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
2021 udev_event_apply_format(event, group, sizeof(group));
2022 event->gid = util_lookup_group(event->udev, group);
2027 char mode[UTIL_NAME_SIZE];
2030 if (event->mode_final)
2032 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2033 event->mode_final = 1;
2034 util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
2035 udev_event_apply_format(event, mode, sizeof(mode));
2036 event->mode = strtol(mode, &endptr, 8);
2037 if (endptr[0] != '\0') {
2038 err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
2044 if (event->owner_final)
2046 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2047 event->owner_final = 1;
2048 event->uid = cur->key.uid;
2051 if (event->group_final)
2053 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2054 event->group_final = 1;
2055 event->gid = cur->key.gid;
2058 if (event->mode_final)
2060 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2061 event->mode_final = 1;
2062 event->mode = cur->key.mode;
2066 const char *name = &rules->buf[cur->key.attr_off];
2067 char *value = &rules->buf[cur->key.value_off];
2069 if (value[0] != '\0') {
2070 char temp_value[UTIL_NAME_SIZE];
2071 struct udev_list_entry *entry;
2073 util_strlcpy(temp_value, value, sizeof(temp_value));
2074 udev_event_apply_format(event, temp_value, sizeof(temp_value));
2075 entry = udev_device_add_property(event->dev, name, temp_value);
2077 udev_list_entry_set_flag(entry, 1);
2079 udev_device_add_property(event->dev, name, NULL);
2085 const char *name = &rules->buf[cur->key.value_off];
2086 char name_str[UTIL_PATH_SIZE];
2089 if (event->name_final)
2091 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2092 event->name_final = 1;
2093 if (name[0] == '\0') {
2098 util_strlcpy(name_str, name, sizeof(name_str));
2099 udev_event_apply_format(event, name_str, sizeof(name_str));
2100 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
2101 count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
2103 info(event->udev, "%i character(s) replaced\n", count);
2105 event->name = strdup(name_str);
2111 char temp[UTIL_PATH_SIZE];
2112 char filename[UTIL_PATH_SIZE];
2116 if (event->devlink_final)
2118 if (major(udev_device_get_devnum(event->dev)) == 0)
2120 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2121 event->devlink_final = 1;
2122 if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
2123 udev_device_cleanup_devlinks_list(event->dev);
2125 /* allow multiple symlinks separated by spaces */
2126 util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
2127 udev_event_apply_format(event, temp, sizeof(temp));
2128 if (esc == ESCAPE_UNSET)
2129 count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
2130 else if (esc == ESCAPE_REPLACE)
2131 count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
2133 info(event->udev, "%i character(s) replaced\n" , count);
2134 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2136 while (isspace(pos[0]))
2138 next = strchr(pos, ' ');
2141 info(event->udev, "add symlink '%s'\n", pos);
2142 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2143 util_strlcat(filename, "/", sizeof(filename));
2144 util_strlcat(filename, pos, sizeof(filename));
2145 udev_device_add_devlink(event->dev, filename);
2146 while (isspace(next[1]))
2149 next = strchr(pos, ' ');
2151 if (pos[0] != '\0') {
2152 info(event->udev, "add symlink '%s'\n", pos);
2153 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2154 util_strlcat(filename, "/", sizeof(filename));
2155 util_strlcat(filename, pos, sizeof(filename));
2156 udev_device_add_devlink(event->dev, filename);
2160 case TK_A_EVENT_TIMEOUT:
2161 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2163 case TK_A_IGNORE_REMOVE:
2164 udev_device_set_ignore_remove(event->dev, 1);
2168 const char *key_name = &rules->buf[cur->key.attr_off];
2169 char attr[UTIL_PATH_SIZE];
2170 char value[UTIL_NAME_SIZE];
2173 util_strlcpy(attr, key_name, sizeof(attr));
2174 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) {
2175 util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr));
2176 util_strlcat(attr, "/", sizeof(attr));
2177 util_strlcat(attr, key_name, sizeof(attr));
2180 attr_subst_subdir(attr, sizeof(attr));
2182 util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value));
2183 udev_event_apply_format(event, value, sizeof(value));
2184 info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
2185 f = fopen(attr, "w");
2188 if (fprintf(f, "%s", value) <= 0)
2189 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2192 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2198 struct udev_list_entry *list_entry;
2200 if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
2201 udev_list_cleanup_entries(event->udev, &event->run_list);
2202 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2203 &rules->buf[cur->key.value_off], NULL, 1, 0);
2204 if (cur->key.ignore_error)
2205 udev_list_entry_set_flag(list_entry, 1);
2209 cur = &rules->tokens[cur->key.rule_goto];
2211 case TK_A_LAST_RULE:
2214 case TK_PARENTS_MAX:
2217 err(rules->udev, "wrong type %u\n", cur->type);
2224 /* fast-forward to next rule */
2225 idx = rule->rule.next_rule;
2228 dbg(rules->udev, "forward to rule: %u\n", idx);
2229 cur = &rules->tokens[idx];