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
43 static const char *operation_str[] = {
44 [KEY_OP_MATCH] = "match",
45 [KEY_OP_NOMATCH] = "nomatch",
47 [KEY_OP_ASSIGN] = "assign",
48 [KEY_OP_ASSIGN_FINAL] = "assign-final",
55 TK_M_ACTION, /* val */
56 TK_M_DEVPATH, /* val */
57 TK_M_KERNEL, /* val */
58 TK_M_DEVLINK, /* val */
60 TK_M_ENV, /* val, attr */
61 TK_M_SUBSYSTEM, /* val */
62 TK_M_DRIVER, /* val */
63 TK_M_WAITFOR, /* val */
64 TK_M_ATTR, /* val, attr */
66 TK_M_KERNELS, /* val */
67 TK_M_SUBSYSTEMS, /* val */
68 TK_M_DRIVERS, /* val */
69 TK_M_ATTRS, /* val, attr */
72 TK_M_TEST, /* val, mode_t */
73 TK_M_PROGRAM, /* val */
74 TK_M_IMPORT_FILE, /* val */
75 TK_M_IMPORT_PROG, /* val */
76 TK_M_IMPORT_PARENT, /* val */
77 TK_M_RESULT, /* val */
80 TK_A_STRING_ESCAPE_NONE,
81 TK_A_STRING_ESCAPE_REPLACE,
82 TK_A_NUM_FAKE_PART, /* int */
83 TK_A_DEVLINK_PRIO, /* int */
87 TK_A_OWNER_ID, /* uid_t */
88 TK_A_GROUP_ID, /* gid_t */
89 TK_A_MODE_ID, /* mode_t */
90 TK_A_ENV, /* val, attr */
92 TK_A_DEVLINK, /* val */
93 TK_A_EVENT_TIMEOUT, /* int */
95 TK_A_ATTR, /* val, attr */
96 TK_A_RUN, /* val, bool */
97 TK_A_GOTO, /* size_t */
103 static const char *token_str[] = {
104 [TK_UNDEF] = "UNDEF",
107 [TK_M_ACTION] = "M ACTION",
108 [TK_M_DEVPATH] = "M DEVPATH",
109 [TK_M_KERNEL] = "M KERNEL",
110 [TK_M_DEVLINK] = "M DEVLINK",
111 [TK_M_NAME] = "M NAME",
112 [TK_M_ENV] = "M ENV",
113 [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
114 [TK_M_DRIVER] = "M DRIVER",
115 [TK_M_WAITFOR] = "M WAITFOR",
116 [TK_M_ATTR] = "M ATTR",
118 [TK_M_KERNELS] = "M KERNELS",
119 [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
120 [TK_M_DRIVERS] = "M DRIVERS",
121 [TK_M_ATTRS] = "M ATTRS",
122 [TK_PARENTS_MAX] = "PARENTS_MAX",
124 [TK_M_TEST] = "M TEST",
125 [TK_M_PROGRAM] = "M PROGRAM",
126 [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
127 [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
128 [TK_M_IMPORT_PARENT] = "M MPORT_PARENT",
129 [TK_M_RESULT] = "M RESULT",
131 [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE",
132 [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
133 [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
134 [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART",
135 [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
136 [TK_A_OWNER] = "A OWNER",
137 [TK_A_GROUP] = "A GROUP",
138 [TK_A_MODE] = "A MODE",
139 [TK_A_OWNER_ID] = "A OWNER_ID",
140 [TK_A_GROUP_ID] = "A GROUP_ID",
141 [TK_A_MODE_ID] = "A MODE_ID",
142 [TK_A_ENV] = "A ENV",
143 [TK_A_NAME] = "A NAME",
144 [TK_A_DEVLINK] = "A DEVLINK",
145 [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
146 [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE",
147 [TK_A_ATTR] = "A ATTR",
148 [TK_A_RUN] = "A RUN",
149 [TK_A_GOTO] = "A GOTO",
150 [TK_A_LAST_RULE] = "A LAST_RULE",
156 enum token_type type;
159 unsigned int next_rule;
160 unsigned int label_off;
161 unsigned int filename_off;
164 enum key_operation op;
165 unsigned int value_off;
167 unsigned int attr_off;
170 unsigned int rule_goto;
184 struct udev_rules *rules;
186 struct token token[MAX_TK];
187 unsigned int token_cur;
193 struct token *tokens;
194 unsigned int token_cur;
195 unsigned int token_max;
199 unsigned int buf_count;
202 /* we could lookup and return existing strings, or tails of strings */
203 static int add_string(struct udev_rules *rules, const char *str)
205 size_t len = strlen(str)+1;
208 /* offset 0 is always '\0' */
212 /* grow buffer if needed */
213 if (rules->buf_cur + len+1 >= rules->buf_max) {
217 /* double the buffer size */
218 add = rules->buf_max;
222 buf = realloc(rules->buf, rules->buf_max + add);
225 info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
227 rules->buf_max += add;
229 off = rules->buf_cur;
230 memcpy(&rules->buf[rules->buf_cur], str, len);
231 rules->buf_cur += len;
236 static int add_token(struct udev_rules *rules, struct token *token)
239 /* grow buffer if needed */
240 if (rules->token_cur+1 >= rules->token_max) {
241 struct token *tokens;
244 /* double the buffer size */
245 add = rules->token_max;
249 tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
252 info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
253 rules->tokens = tokens;
254 rules->token_max += add;
256 memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
261 static int import_property_from_string(struct udev_device *dev, char *line)
263 struct udev *udev = udev_device_get_udev(dev);
270 while (isspace(key[0]))
273 /* comment or empty line */
274 if (key[0] == '#' || key[0] == '\0')
277 /* split key/value */
278 val = strchr(key, '=');
285 while (isspace(val[0]))
292 while (isspace(key[len-1]))
296 /* terminate value */
300 while (isspace(val[len-1]))
308 if (val[0] == '"' || val[0] == '\'') {
309 if (val[len-1] != val[0]) {
310 info(udev, "inconsistent quoting: '%s', skip\n", line);
317 info(udev, "adding '%s'='%s'\n", key, val);
319 /* handle device, renamed by external tool, returning new path */
320 if (strcmp(key, "DEVPATH") == 0) {
321 char syspath[UTIL_PATH_SIZE];
323 info(udev, "updating devpath from '%s' to '%s'\n",
324 udev_device_get_devpath(dev), val);
325 util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
326 util_strlcat(syspath, val, sizeof(syspath));
327 udev_device_set_syspath(dev, syspath);
329 struct udev_list_entry *entry;
331 entry = udev_device_add_property(dev, key, val);
333 udev_list_entry_set_flag(entry, 1);
338 static int import_file_into_properties(struct udev_device *dev, const char *filename)
341 char line[UTIL_LINE_SIZE];
343 f = fopen(filename, "r");
346 while (fgets(line, sizeof(line), f) != NULL)
347 import_property_from_string(dev, line);
352 static int import_program_into_properties(struct udev_device *dev, const char *program)
354 struct udev *udev = udev_device_get_udev(dev);
360 envp = udev_device_get_properties_envp(dev);
361 if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0)
365 while (line != NULL) {
368 pos = strchr(line, '\n');
373 import_property_from_string(dev, line);
379 static int import_parent_into_properties(struct udev_device *dev, const char *filter)
381 struct udev *udev = udev_device_get_udev(dev);
382 struct udev_device *dev_parent;
383 struct udev_list_entry *list_entry;
385 dev_parent = udev_device_get_parent(dev);
386 if (dev_parent == NULL)
389 dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
390 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
391 const char *key = udev_list_entry_get_name(list_entry);
392 const char *val = udev_list_entry_get_value(list_entry);
394 if (fnmatch(filter, key, 0) == 0) {
395 struct udev_list_entry *entry;
397 dbg(udev, "import key '%s=%s'\n", key, val);
398 entry = udev_device_add_property(dev, key, val);
400 udev_list_entry_set_flag(entry, 1);
406 #define WAIT_LOOP_PER_SECOND 50
407 static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
409 struct udev *udev = udev_device_get_udev(dev);
410 char filepath[UTIL_PATH_SIZE];
411 char devicepath[UTIL_PATH_SIZE] = "";
413 int loop = timeout * WAIT_LOOP_PER_SECOND;
415 /* a relative path is a device attribute */
416 if (file[0] != '/') {
417 util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
418 util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
420 util_strlcpy(filepath, devicepath, sizeof(filepath));
421 util_strlcat(filepath, "/", sizeof(filepath));
422 util_strlcat(filepath, file, sizeof(filepath));
426 dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
429 if (stat(file, &stats) == 0) {
430 info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
433 /* make sure, the device did not disappear in the meantime */
434 if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
435 info(udev, "device disappeared while waiting for '%s'\n", file);
438 info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
439 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
441 info(udev, "waiting for '%s' failed\n", file);
445 static int attr_subst_subdir(char *attr, size_t len)
450 pos = strstr(attr, "/*/");
452 char str[UTIL_PATH_SIZE];
456 util_strlcpy(str, &pos[2], sizeof(str));
461 for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
464 if (dent->d_name[0] == '.')
466 util_strlcat(attr, dent->d_name, len);
467 util_strlcat(attr, str, len);
468 if (stat(attr, &stats) == 0) {
477 util_strlcat(attr, str, len);
483 static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value)
489 if (linepos == NULL && linepos[0] == '\0')
492 /* skip whitespace */
493 while (isspace(linepos[0]) || linepos[0] == ',')
497 if (linepos[0] == '\0')
503 if (linepos[0] == '\0')
505 if (isspace(linepos[0]))
507 if (linepos[0] == '=')
509 if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
510 if (linepos[1] == '=')
514 /* remember end of key */
517 /* skip whitespace after key */
518 while (isspace(linepos[0]))
520 if (linepos[0] == '\0')
523 /* get operation type */
524 if (linepos[0] == '=' && linepos[1] == '=') {
527 } else if (linepos[0] == '!' && linepos[1] == '=') {
528 *op = KEY_OP_NOMATCH;
530 } else if (linepos[0] == '+' && linepos[1] == '=') {
533 } else if (linepos[0] == '=') {
536 } else if (linepos[0] == ':' && linepos[1] == '=') {
537 *op = KEY_OP_ASSIGN_FINAL;
545 /* skip whitespace after operator */
546 while (isspace(linepos[0]))
548 if (linepos[0] == '\0')
552 if (linepos[0] == '"')
558 temp = strchr(linepos, '"');
563 dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value);
565 /* move line to next key */
570 /* extract possible KEY{attr} */
571 static char *get_key_attribute(struct udev *udev, char *str)
576 attr = strchr(str, '{');
579 pos = strchr(attr, '}');
581 err(udev, "missing closing brace for format\n");
585 dbg(udev, "attribute='%s'\n", attr);
591 static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
592 enum key_operation op,
593 const char *value, const void *data)
595 struct token *token = &rule_tmp->token[rule_tmp->token_cur];
596 const char *attr = data;
609 case TK_M_SUBSYSTEMS:
612 case TK_M_IMPORT_FILE:
613 case TK_M_IMPORT_PROG:
614 case TK_M_IMPORT_PARENT:
622 token->key.value_off = add_string(rule_tmp->rules, value);
629 token->key.value_off = add_string(rule_tmp->rules, value);
630 token->key.attr_off = add_string(rule_tmp->rules, attr);
634 mode = *(mode_t *)data;
635 token->key.value_off = add_string(rule_tmp->rules, value);
636 token->key.mode = mode;
638 case TK_A_IGNORE_DEVICE:
639 case TK_A_STRING_ESCAPE_NONE:
640 case TK_A_STRING_ESCAPE_REPLACE:
641 case TK_A_IGNORE_REMOVE:
645 token->key.value_off = add_string(rule_tmp->rules, value);
646 token->key.ignore_error = *(int *)data;
648 case TK_A_NUM_FAKE_PART:
649 token->key.num_fake_part = *(int *)data;
651 case TK_A_DEVLINK_PRIO:
652 token->key.devlink_prio = *(int *)data;
655 token->key.uid = *(uid_t *)data;
658 token->key.gid = *(gid_t *)data;
661 token->key.mode = *(mode_t *)data;
663 case TK_A_EVENT_TIMEOUT:
664 token->key.event_timeout = *(int *)data;
670 err(rule_tmp->rules->udev, "wrong type %u\n", type);
675 rule_tmp->token_cur++;
676 if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
677 err(rule_tmp->rules->udev, "temporary rule array too small\n");
684 static void dump_token(struct udev_rules *rules, struct token *token)
686 enum token_type type = token->type;
687 enum key_operation op = token->key.op;
688 const char *value = &rules->buf[token->key.value_off];
689 const char *attr = &rules->buf[token->key.attr_off];
694 const char *tks_ptr = (char *)rules->tokens;
695 const char *tk_ptr = (char *)token;
696 unsigned int off = tk_ptr - tks_ptr;
698 dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
699 &rules->buf[token->rule.filename_off],
700 off / (unsigned int) sizeof(struct token), off,
701 token->rule.next_rule,
702 &rules->buf[token->rule.label_off]);
714 case TK_M_SUBSYSTEMS:
717 case TK_M_IMPORT_FILE:
718 case TK_M_IMPORT_PROG:
719 case TK_M_IMPORT_PARENT:
727 dbg(rules->udev, "%s %s '%s'\n", token_str[type], operation_str[op], value);
734 dbg(rules->udev, "%s %s '%s' '%s'\n", token_str[type], operation_str[op], attr, value);
736 case TK_A_IGNORE_DEVICE:
737 case TK_A_STRING_ESCAPE_NONE:
738 case TK_A_STRING_ESCAPE_REPLACE:
740 case TK_A_IGNORE_REMOVE:
741 dbg(rules->udev, "%s\n", token_str[type]);
744 dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode);
746 case TK_A_NUM_FAKE_PART:
747 dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part);
749 case TK_A_DEVLINK_PRIO:
750 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.devlink_prio);
753 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid);
756 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid);
759 dbg(rules->udev, "%s %s %#o\n", token_str[type], operation_str[op], token->key.mode);
761 case TK_A_EVENT_TIMEOUT:
762 dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout);
765 dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto);
768 dbg(rules->udev, "* %s\n", token_str[type]);
772 dbg(rules->udev, "unknown type %u\n", type);
777 static void dump_rules(struct udev_rules *rules)
781 dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
783 rules->token_cur * sizeof(struct token),
786 for(i = 0; i < rules->token_cur; i++)
787 dump_token(rules, &rules->tokens[i]);
790 static inline void dump_token(struct udev_rules *rules, struct token *token) {}
791 static inline void dump_rules(struct udev_rules *rules) {}
794 static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
797 unsigned int start = 0;
798 unsigned int end = rule_tmp->token_cur;
800 for (i = 0; i < rule_tmp->token_cur; i++) {
801 enum token_type next_val = TK_UNDEF;
802 unsigned int next_idx;
805 /* find smallest value */
806 for (j = start; j < end; j++) {
807 if (rule_tmp->token[j].type == TK_UNDEF)
809 if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) {
810 next_val = rule_tmp->token[j].type;
815 /* add token and mark done */
816 if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
818 rule_tmp->token[next_idx].type = TK_UNDEF;
821 if (next_idx == start)
823 if (next_idx+1 == end)
829 static int add_rule(struct udev_rules *rules, char *line,
830 const char *filename, unsigned int filename_off, unsigned int lineno)
836 struct rule_tmp rule_tmp;
838 memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
839 rule_tmp.rules = rules;
840 rule_tmp.rule.type = TK_RULE;
841 rule_tmp.rule.rule.filename_off = filename_off;
847 enum key_operation op = KEY_OP_UNSET;
849 if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
852 if (strcasecmp(key, "ACTION") == 0) {
853 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
854 err(rules->udev, "invalid ACTION operation\n");
857 rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
862 if (strcasecmp(key, "DEVPATH") == 0) {
863 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
864 err(rules->udev, "invalid DEVPATH operation\n");
867 rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
872 if (strcasecmp(key, "KERNEL") == 0) {
873 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
874 err(rules->udev, "invalid KERNEL operation\n");
877 rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
882 if (strcasecmp(key, "SUBSYSTEM") == 0) {
883 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
884 err(rules->udev, "invalid SUBSYSTEM operation\n");
887 /* bus, class, subsystem events should all be the same */
888 if (strcmp(value, "subsystem") == 0 ||
889 strcmp(value, "bus") == 0 ||
890 strcmp(value, "class") == 0) {
891 if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
892 err(rules->udev, "'%s' must be specified as 'subsystem' \n"
893 "please fix it in %s:%u", value, filename, lineno);
894 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
896 rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
901 if (strcasecmp(key, "DRIVER") == 0) {
902 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
903 err(rules->udev, "invalid DRIVER operation\n");
906 rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
911 if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
912 attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
914 err(rules->udev, "error parsing ATTR attribute\n");
917 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
918 rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
920 rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
926 if (strcasecmp(key, "KERNELS") == 0 ||
927 strcasecmp(key, "ID") == 0) {
928 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
929 err(rules->udev, "invalid KERNELS operation\n");
932 rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
937 if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
938 strcasecmp(key, "BUS") == 0) {
939 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
940 err(rules->udev, "invalid SUBSYSTEMS operation\n");
943 rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
948 if (strcasecmp(key, "DRIVERS") == 0) {
949 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
950 err(rules->udev, "invalid DRIVERS operation\n");
953 rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
958 if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
959 strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
960 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
961 err(rules->udev, "invalid ATTRS operation\n");
964 attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
966 err(rules->udev, "error parsing ATTRS attribute\n");
969 if (strncmp(attr, "device/", 7) == 0)
970 err(rules->udev, "the 'device' link may not be available in a future kernel, "
971 "please fix it in %s:%u", filename, lineno);
972 else if (strstr(attr, "../") != NULL)
973 err(rules->udev, "do not reference parent sysfs directories directly, "
974 "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
975 rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
980 if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
981 attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
983 err(rules->udev, "error parsing ENV attribute\n");
986 if (strncmp(attr, "PHYSDEV", 7) == 0)
988 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
989 if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
992 if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
999 if (strcasecmp(key, "PROGRAM") == 0) {
1000 rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
1005 if (strcasecmp(key, "RESULT") == 0) {
1006 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1007 err(rules->udev, "invalid RESULT operation\n");
1010 rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
1015 if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
1016 attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
1017 if (attr != NULL && strstr(attr, "program")) {
1018 dbg(rules->udev, "IMPORT will be executed\n");
1019 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1021 } else if (attr != NULL && strstr(attr, "file")) {
1022 dbg(rules->udev, "IMPORT will be included as file\n");
1023 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1025 } else if (attr != NULL && strstr(attr, "parent")) {
1026 dbg(rules->udev, "IMPORT will include the parent values\n");
1027 rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
1030 /* figure it out if it is executable */
1031 char file[UTIL_PATH_SIZE];
1033 struct stat statbuf;
1035 util_strlcpy(file, value, sizeof(file));
1036 pos = strchr(file, ' ');
1040 /* allow programs in /lib/udev called without the path */
1041 if (strchr(file, '/') == NULL) {
1042 util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
1043 util_strlcat(file, value, sizeof(file));
1044 pos = strchr(file, ' ');
1049 dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
1050 if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
1051 dbg(rules->udev, "IMPORT will be executed (autotype)\n");
1052 rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
1055 dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
1056 rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
1063 if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
1066 if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
1067 err(rules->udev, "invalid TEST operation\n");
1070 attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
1072 mode = strtol(attr, NULL, 8);
1073 rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
1075 rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
1081 if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
1084 attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
1085 if (attr != NULL && strstr(attr, "ignore_error"))
1087 rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
1092 if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
1093 rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
1098 if (strcasecmp(key, "LABEL") == 0) {
1099 rule_tmp.rule.rule.label_off = add_string(rules, value);
1104 if (strcasecmp(key, "GOTO") == 0) {
1105 rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
1110 if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
1111 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
1112 rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
1114 if (value[0] == '\0')
1115 dbg(rules->udev, "name empty, node creation suppressed\n");
1116 rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
1117 attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
1119 if (strstr(attr, "all_partitions") != NULL) {
1120 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1122 dbg(rules->udev, "creation of partition nodes requested\n");
1123 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1125 if (strstr(attr, "ignore_remove") != NULL) {
1126 dbg(rules->udev, "remove event should be ignored\n");
1127 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1134 if (strcasecmp(key, "SYMLINK") == 0) {
1135 if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH)
1136 rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
1138 rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
1143 if (strcasecmp(key, "OWNER") == 0) {
1147 uid = strtoul(value, &endptr, 10);
1148 if (endptr[0] == '\0') {
1149 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1150 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1151 uid = util_lookup_user(rules->udev, value);
1152 rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
1154 rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
1160 if (strcasecmp(key, "GROUP") == 0) {
1164 gid = strtoul(value, &endptr, 10);
1165 if (endptr[0] == '\0') {
1166 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1167 } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
1168 gid = util_lookup_group(rules->udev, value);
1169 rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
1171 rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
1177 if (strcasecmp(key, "MODE") == 0) {
1181 mode = strtol(value, &endptr, 8);
1182 if (endptr[0] == '\0')
1183 rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
1185 rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
1190 if (strcasecmp(key, "OPTIONS") == 0) {
1193 if (strstr(value, "last_rule") != NULL) {
1194 dbg(rules->udev, "last rule to be applied\n");
1195 rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
1197 if (strstr(value, "ignore_device") != NULL) {
1198 dbg(rules->udev, "device should be ignored\n");
1199 rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
1201 if (strstr(value, "ignore_remove") != NULL) {
1202 dbg(rules->udev, "remove event should be ignored\n");
1203 rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
1205 pos = strstr(value, "link_priority=");
1207 int prio = atoi(&pos[strlen("link_priority=")]);
1209 rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
1210 dbg(rules->udev, "link priority=%i\n", prio);
1212 pos = strstr(value, "event_timeout=");
1214 int tout = atoi(&pos[strlen("event_timeout=")]);
1216 rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
1217 dbg(rules->udev, "event timout=%i\n", tout);
1219 pos = strstr(value, "string_escape=");
1221 pos = &pos[strlen("string_escape=")];
1222 if (strncmp(pos, "none", strlen("none")) == 0)
1223 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
1224 else if (strncmp(pos, "replace", strlen("replace")) == 0)
1225 rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
1227 if (strstr(value, "all_partitions") != NULL) {
1228 int num = DEFAULT_FAKE_PARTITIONS_COUNT;
1230 rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
1231 dbg(rules->udev, "creation of partition nodes requested\n");
1236 err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
1240 err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n"
1241 "please fix it in %s:%u", filename, lineno);
1243 /* skip line if not any valid key was found */
1247 /* add rule token */
1248 if (add_token(rules, &rule_tmp.rule) != 0)
1251 /* add tokens to list, sorted by type */
1252 if (sort_token(rules, &rule_tmp) != 0)
1256 err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
1260 static int parse_file(struct udev_rules *rules, const char *filename)
1263 unsigned int filename_off;
1264 unsigned int first_token;
1265 char line[UTIL_LINE_SIZE];
1269 info(rules->udev, "reading '%s' as rules file\n", filename);
1271 f = fopen(filename, "r");
1275 filename_off = add_string(rules, filename);
1276 first_token = rules->token_cur;
1278 while(fgets(line, sizeof(line), f) != NULL) {
1282 /* skip whitespace */
1285 while (isspace(key[0]))
1296 /* continue reading if backslash+newline is found */
1297 while (line[len-2] == '\\') {
1298 if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
1304 if (len+1 >= sizeof(line)) {
1305 err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
1308 add_rule(rules, key, filename, filename_off, line_nr);
1312 /* link GOTOs to LABEL rules in this file to be able to fast-forward */
1313 for (i = first_token+1; i < rules->token_cur; i++) {
1314 if (rules->tokens[i].type == TK_A_GOTO) {
1315 char *label = &rules->buf[rules->tokens[i].key.value_off];
1318 for (j = i+1; j < rules->token_cur; j++) {
1319 if (rules->tokens[j].type != TK_RULE)
1321 if (rules->tokens[j].rule.label_off == 0)
1323 if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
1325 rules->tokens[i].key.rule_goto = j;
1327 if (rules->tokens[i].key.rule_goto == 0)
1328 err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
1334 static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
1338 char filename[UTIL_PATH_SIZE];
1340 dbg(udev, "open directory '%s'\n", dirname);
1341 dir = opendir(dirname);
1343 err(udev, "unable to open '%s': %m\n", dirname);
1349 if (ent == NULL || ent->d_name[0] == '\0')
1352 if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
1355 /* look for file matching with specified suffix */
1356 if (suffix != NULL) {
1359 ext = strrchr(ent->d_name, '.');
1362 if (strcmp(ext, suffix) != 0)
1365 dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
1367 snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
1368 filename[sizeof(filename)-1] = '\0';
1369 udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
1376 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
1378 struct udev_rules *rules;
1379 struct stat statbuf;
1380 char filename[PATH_MAX];
1381 struct udev_list_node file_list;
1382 struct udev_list_entry *file_loop, *file_tmp;
1383 unsigned int prev_rule;
1384 struct token end_token;
1387 rules = malloc(sizeof(struct udev_rules));
1390 memset(rules, 0x00, sizeof(struct udev_rules));
1392 rules->resolve_names = resolve_names;
1393 udev_list_init(&file_list);
1395 /* init token array and string buffer */
1396 rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
1397 if (rules->tokens == NULL)
1399 rules->token_max = PREALLOC_TOKEN;
1400 rules->buf = malloc(PREALLOC_STRBUF);
1401 if (rules->buf == NULL)
1403 rules->buf_max = PREALLOC_STRBUF;
1404 /* offset 0 is always '\0' */
1405 rules->buf[0] = '\0';
1407 info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1408 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1410 if (udev_get_rules_path(udev) != NULL) {
1411 /* custom rules location for testing */
1412 add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
1414 struct udev_list_node sort_list;
1415 struct udev_list_entry *sort_loop, *sort_tmp;
1417 /* read user/custom rules */
1418 add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
1420 /* read dynamic/temporary rules */
1421 util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
1422 util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
1423 if (stat(filename, &statbuf) != 0) {
1424 util_create_path(udev, filename);
1425 udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
1426 mkdir(filename, 0755);
1427 udev_selinux_resetfscreatecon(udev);
1429 udev_list_init(&sort_list);
1430 add_matching_files(udev, &sort_list, filename, ".rules");
1432 /* read default rules */
1433 add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
1435 /* sort all rules files by basename into list of files */
1436 udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
1437 const char *sort_name = udev_list_entry_get_name(sort_loop);
1438 const char *sort_base = strrchr(sort_name, '/');
1440 if (sort_base == NULL)
1443 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1444 const char *file_name = udev_list_entry_get_name(file_loop);
1445 const char *file_base = strrchr(file_name, '/');
1447 if (file_base == NULL)
1449 if (strcmp(file_base, sort_base) == 0) {
1450 info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
1451 file_name, sort_name);
1452 udev_list_entry_remove(sort_loop);
1456 if (strcmp(file_base, sort_base) > 0)
1459 if (sort_loop != NULL)
1460 udev_list_entry_move_before(sort_loop, file_loop);
1464 /* parse list of files */
1465 udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
1466 const char *file_name = udev_list_entry_get_name(file_loop);
1468 if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
1469 parse_file(rules, file_name);
1471 info(udev, "can not read '%s'\n", file_name);
1472 udev_list_entry_remove(file_loop);
1475 memset(&end_token, 0x00, sizeof(struct token));
1476 end_token.type = TK_END;
1477 add_token(rules, &end_token);
1479 /* shrink allocate buffers */
1480 if (rules->token_cur < rules->token_max) {
1481 struct token *tokens;
1483 tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
1484 if (tokens != NULL || rules->token_cur == 0) {
1485 rules->tokens = tokens;
1486 rules->token_max = rules->token_cur;
1489 if (rules->buf_cur < rules->buf_max) {
1492 buf = realloc(rules->buf, rules->buf_cur);
1493 if (buf != NULL || rules->buf_cur == 0) {
1495 rules->buf_max = rules->buf_cur;
1498 info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
1499 rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
1501 /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */
1503 for (i = 1; i < rules->token_cur; i++) {
1504 if (rules->tokens[i].type == TK_RULE) {
1505 rules->tokens[prev_rule].rule.next_rule = i;
1513 void udev_rules_unref(struct udev_rules *rules)
1517 free(rules->tokens);
1522 static int match_key(struct udev_rules *rules, struct token *token, const char *val)
1524 const char *key_name = token_str[token->type];
1525 char *key_value = &rules->buf[token->key.value_off];
1532 /* look for a matching string, parts are separated by '|' */
1533 if (strchr(key_value, '|') != NULL) {
1534 char value[UTIL_PATH_SIZE];
1536 util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
1538 while (key_value != NULL) {
1539 pos = strchr(key_value, '|');
1544 dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
1545 match = (fnmatch(key_value, val, 0) == 0);
1551 match = (fnmatch(key_value, val, 0) == 0);
1554 if (match && (token->key.op == KEY_OP_MATCH)) {
1555 dbg(rules->udev, "%s is true (matching value)\n", key_name);
1558 if (!match && (token->key.op == KEY_OP_NOMATCH)) {
1559 dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
1562 dbg(rules->udev, "%s is not true\n", key_name);
1566 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
1568 char attr[UTIL_PATH_SIZE];
1569 const char *key_name = &rules->buf[cur->key.attr_off];
1570 const char *key_value = &rules->buf[cur->key.value_off];
1571 char value[UTIL_NAME_SIZE] = "";
1574 util_strlcpy(attr, key_name, sizeof(attr));
1575 util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
1576 if (value[0] == '\0') {
1579 val = udev_device_get_sysattr_value(dev, key_name);
1581 util_strlcpy(value, val, sizeof(value));
1586 /* strip trailing whitespace of value, if not asked to match for it */
1587 len = strlen(key_value);
1588 if (len > 0 && !isspace(key_value[len-1])) {
1589 len = strlen(value);
1590 while (len > 0 && isspace(value[--len]))
1592 dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
1594 return match_key(rules, cur, value);
1603 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
1608 if (rules->tokens == NULL)
1611 /* loop through token list, match, run actions or forward to next rule */
1612 cur = &rules->tokens[0];
1614 while (cur != NULL && cur->type != TK_END) {
1615 enum escape_type esc = ESCAPE_UNSET;
1618 dump_token(rules, cur);
1619 switch (cur->type) {
1626 if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
1630 if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
1634 if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
1639 size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
1640 struct udev_list_entry *list_entry;
1643 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
1644 const char *devlink;
1646 devlink = &udev_list_entry_get_name(list_entry)[devlen];
1647 if (match_key(rules, cur, devlink) == 0) {
1657 if (match_key(rules, cur, event->name) != 0)
1662 struct udev_list_entry *list_entry;
1663 const char *key_name = &rules->buf[cur->key.attr_off];
1666 list_entry = udev_device_get_properties_list_entry(event->dev);
1667 list_entry = udev_list_entry_get_by_name(list_entry, key_name);
1668 value = udev_list_entry_get_value(list_entry);
1669 if (value == NULL) {
1670 dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
1673 if (match_key(rules, cur, value))
1677 case TK_M_SUBSYSTEM:
1678 if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
1682 if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
1687 char filename[UTIL_PATH_SIZE];
1690 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1691 udev_event_apply_format(event, filename, sizeof(filename));
1692 found = (wait_for_file(event->dev, filename, 10) == 0);
1693 if (!found && (cur->key.op != KEY_OP_NOMATCH))
1698 if (match_attr(rules, event->dev, event, cur) != 0)
1702 case TK_M_SUBSYSTEMS:
1708 /* get whole sequence of parent matches */
1710 while (next->type < TK_PARENTS_MAX)
1713 /* loop over parents */
1714 event->dev_parent = event->dev;
1718 dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
1719 /* loop over sequence of parent match keys */
1720 for (key = cur; key < next; key++ ) {
1721 dump_token(rules, key);
1724 if (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
1727 case TK_M_SUBSYSTEMS:
1728 if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
1732 if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
1736 if (match_attr(rules, event->dev_parent, event, key) != 0)
1742 dbg(event->udev, "parent key matched\n");
1744 dbg(event->udev, "all parent keys matched\n");
1745 /* all keys matched */
1749 event->dev_parent = udev_device_get_parent(event->dev_parent);
1750 if (event->dev_parent == NULL)
1753 /* move behind our sequence of parent match keys */
1759 char filename[UTIL_PATH_SIZE];
1760 struct stat statbuf;
1763 util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
1764 udev_event_apply_format(event, filename, sizeof(filename));
1765 if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0)
1766 if (filename[0] != '/') {
1767 char tmp[UTIL_PATH_SIZE];
1769 util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp));
1770 util_strlcat(tmp, "/", sizeof(tmp));
1771 util_strlcat(tmp, filename, sizeof(tmp));
1772 util_strlcpy(filename, tmp, sizeof(filename));
1775 attr_subst_subdir(filename, sizeof(filename));
1777 match = (stat(filename, &statbuf) == 0);
1778 info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
1779 if (match && cur->key.mode > 0) {
1780 match = ((statbuf.st_mode & cur->key.mode) > 0);
1781 info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
1782 match ? "matches" : "does not match", cur->key.mode);
1784 if (match && cur->key.op == KEY_OP_NOMATCH)
1786 if (!match && cur->key.op == KEY_OP_MATCH)
1792 char program[UTIL_PATH_SIZE];
1794 char result[UTIL_PATH_SIZE];
1796 free(event->program_result);
1797 event->program_result = NULL;
1798 util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program));
1799 udev_event_apply_format(event, program, sizeof(program));
1800 envp = udev_device_get_properties_envp(event->dev);
1801 if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
1802 if (cur->key.op != KEY_OP_NOMATCH)
1807 util_remove_trailing_chars(result, '\n');
1808 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
1809 count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
1811 info(event->udev, "%i character(s) replaced\n" , count);
1813 event->program_result = strdup(result);
1814 dbg(event->udev, "storing result '%s'\n", event->program_result);
1815 if (cur->key.op == KEY_OP_NOMATCH)
1820 case TK_M_IMPORT_FILE:
1822 char import[UTIL_PATH_SIZE];
1824 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1825 udev_event_apply_format(event, import, sizeof(import));
1826 if (import_file_into_properties(event->dev, import) != 0)
1827 if (cur->key.op != KEY_OP_NOMATCH)
1831 case TK_M_IMPORT_PROG:
1833 char import[UTIL_PATH_SIZE];
1835 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1836 udev_event_apply_format(event, import, sizeof(import));
1837 if (import_program_into_properties(event->dev, import) != 0)
1838 if (cur->key.op != KEY_OP_NOMATCH)
1842 case TK_M_IMPORT_PARENT:
1844 char import[UTIL_PATH_SIZE];
1846 util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
1847 udev_event_apply_format(event, import, sizeof(import));
1848 if (import_parent_into_properties(event->dev, import) != 0)
1849 if (cur->key.op != KEY_OP_NOMATCH)
1854 if (match_key(rules, cur, event->program_result) != 0)
1858 case TK_A_IGNORE_DEVICE:
1859 event->ignore_device = 1;
1862 case TK_A_STRING_ESCAPE_NONE:
1865 case TK_A_STRING_ESCAPE_REPLACE:
1866 esc = ESCAPE_REPLACE;
1868 case TK_A_NUM_FAKE_PART:
1869 if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0)
1871 if (udev_device_get_sysnum(event->dev) != NULL)
1873 udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
1875 case TK_A_DEVLINK_PRIO:
1876 udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
1880 char owner[UTIL_NAME_SIZE];
1882 if (event->owner_final)
1884 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1885 event->owner_final = 1;
1886 util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner));
1887 udev_event_apply_format(event, owner, sizeof(owner));
1888 event->uid = util_lookup_user(event->udev, owner);
1893 char group[UTIL_NAME_SIZE];
1895 if (event->group_final)
1897 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1898 event->group_final = 1;
1899 util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
1900 udev_event_apply_format(event, group, sizeof(group));
1901 event->gid = util_lookup_group(event->udev, group);
1906 char mode[UTIL_NAME_SIZE];
1909 if (event->mode_final)
1911 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1912 event->mode_final = 1;
1913 util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
1914 udev_event_apply_format(event, mode, sizeof(mode));
1915 event->mode = strtol(mode, &endptr, 8);
1916 if (endptr[0] != '\0') {
1917 err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
1923 if (event->owner_final)
1925 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1926 event->owner_final = 1;
1927 event->uid = cur->key.uid;
1930 if (event->group_final)
1932 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1933 event->group_final = 1;
1934 event->gid = cur->key.gid;
1937 if (event->mode_final)
1939 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1940 event->mode_final = 1;
1941 event->mode = cur->key.mode;
1945 const char *name = &rules->buf[cur->key.attr_off];
1946 char *value = &rules->buf[cur->key.value_off];
1948 if (value[0] != '\0') {
1949 char temp_value[UTIL_NAME_SIZE];
1950 struct udev_list_entry *entry;
1952 util_strlcpy(temp_value, value, sizeof(temp_value));
1953 udev_event_apply_format(event, temp_value, sizeof(temp_value));
1954 entry = udev_device_add_property(event->dev, name, temp_value);
1956 udev_list_entry_set_flag(entry, 1);
1958 udev_device_add_property(event->dev, name, NULL);
1964 const char *name = &rules->buf[cur->key.value_off];
1965 char name_str[UTIL_PATH_SIZE];
1968 if (event->name_final)
1970 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
1971 event->name_final = 1;
1972 if (name[0] == '\0') {
1977 util_strlcpy(name_str, name, sizeof(name_str));
1978 udev_event_apply_format(event, name_str, sizeof(name_str));
1979 if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
1980 count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
1982 info(event->udev, "%i character(s) replaced\n", count);
1984 event->name = strdup(name_str);
1990 char temp[UTIL_PATH_SIZE];
1991 char filename[UTIL_PATH_SIZE];
1995 if (event->devlink_final)
1997 if (major(udev_device_get_devnum(event->dev)) == 0)
1999 if (cur->key.op == KEY_OP_ASSIGN_FINAL)
2000 event->devlink_final = 1;
2001 if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
2002 udev_device_cleanup_devlinks_list(event->dev);
2004 /* allow multiple symlinks separated by spaces */
2005 util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
2006 udev_event_apply_format(event, temp, sizeof(temp));
2007 if (esc == ESCAPE_UNSET)
2008 count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
2009 else if (esc == ESCAPE_REPLACE)
2010 count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
2012 info(event->udev, "%i character(s) replaced\n" , count);
2013 dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
2015 while (isspace(pos[0]))
2017 next = strchr(pos, ' ');
2020 info(event->udev, "add symlink '%s'\n", pos);
2021 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2022 util_strlcat(filename, "/", sizeof(filename));
2023 util_strlcat(filename, pos, sizeof(filename));
2024 udev_device_add_devlink(event->dev, filename);
2025 while (isspace(next[1]))
2028 next = strchr(pos, ' ');
2030 if (pos[0] != '\0') {
2031 info(event->udev, "add symlink '%s'\n", pos);
2032 util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
2033 util_strlcat(filename, "/", sizeof(filename));
2034 util_strlcat(filename, pos, sizeof(filename));
2035 udev_device_add_devlink(event->dev, filename);
2039 case TK_A_EVENT_TIMEOUT:
2040 udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
2042 case TK_A_IGNORE_REMOVE:
2043 udev_device_set_ignore_remove(event->dev, 1);
2047 const char *key_name = &rules->buf[cur->key.attr_off];
2048 char attr[UTIL_PATH_SIZE];
2049 char value[UTIL_NAME_SIZE];
2052 util_strlcpy(attr, key_name, sizeof(attr));
2053 if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) {
2054 util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr));
2055 util_strlcat(attr, "/", sizeof(attr));
2056 util_strlcat(attr, key_name, sizeof(attr));
2059 attr_subst_subdir(attr, sizeof(attr));
2061 util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value));
2062 udev_event_apply_format(event, value, sizeof(value));
2063 info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
2064 f = fopen(attr, "w");
2067 if (fprintf(f, "%s", value) <= 0)
2068 err(event->udev, "error writing ATTR{%s}: %m\n", attr);
2071 err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
2077 struct udev_list_entry *list_entry;
2079 if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
2080 udev_list_cleanup_entries(event->udev, &event->run_list);
2081 list_entry = udev_list_entry_add(event->udev, &event->run_list,
2082 &rules->buf[cur->key.value_off], NULL, 1, 0);
2083 if (cur->key.ignore_error)
2084 udev_list_entry_set_flag(list_entry, 1);
2088 cur = &rules->tokens[cur->key.rule_goto];
2090 case TK_A_LAST_RULE:
2093 case TK_PARENTS_MAX:
2096 err(rules->udev, "wrong type %u\n", cur->type);
2103 /* fast-forward to next rule */
2104 idx = rule->rule.next_rule;
2107 dbg(rules->udev, "forward to rule: %u\n", idx);
2108 cur = &rules->tokens[idx];