4 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 2003-2006 Kay Sievers <kay.sievers@vrfy.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation version 2 of the License.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 #include "udev_rules.h"
38 /* extract possible {attr} and move str behind it */
39 static char *get_format_attribute(char **str)
45 pos = strchr(*str, '}');
47 err("missing closing brace for format");
53 dbg("attribute='%s', str='%s'", attr, *str);
58 /* extract possible format length and move str behind it*/
59 static int get_format_len(char **str)
64 if (isdigit(*str[0])) {
65 num = (int) strtoul(*str, &tail, 10);
68 dbg("format length=%i", num);
71 err("format parsing error '%s'", *str);
77 static int get_key(char **line, char **key, char **value)
86 if (strchr(linepos, '\\')) {
87 dbg("escaped characters are not supported, skip");
92 while (isspace(linepos[0]))
99 if (linepos[0] == '\0')
101 if (isspace(linepos[0]))
103 if (linepos[0] == '=')
111 /* skip whitespace */
112 while (isspace(linepos[0]))
116 if (linepos[0] == '"') {
118 temp = strchr(linepos, '"');
120 dbg("missing closing quote");
123 dbg("value is quoted");
125 } else if (linepos[0] == '\'') {
127 temp = strchr(linepos, '\'');
129 dbg("missing closing quote");
132 dbg("value is quoted");
134 } else if (linepos[0] == '\0') {
135 dbg("value is empty");
138 while (temp[0] && !isspace(temp[0]))
147 static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
149 char line[LINE_SIZE];
158 /* loop through the whole buffer */
161 while (cur < bufsize) {
162 count = buf_get_line(buf, bufsize, cur);
167 if (count >= sizeof(line)) {
168 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
172 /* eat the whitespace */
173 while ((count > 0) && isspace(bufline[0])) {
180 /* see if this is a comment */
181 if (bufline[0] == COMMENT_CHARACTER)
184 memcpy(line, bufline, count);
188 if (get_key(&linepos, &variable, &value) == 0) {
189 dbg("import '%s=%s'", variable, value);
190 name_list_key_add(&udev->env_list, variable, value);
191 setenv(variable, value, 1);
198 static int import_file_into_env(struct udevice *udev, const char *filename)
203 if (file_map(filename, &buf, &bufsize) != 0) {
204 err("can't open '%s': %s", filename, strerror(errno));
207 import_keys_into_env(udev, buf, bufsize);
208 file_unmap(buf, bufsize);
213 static int import_program_into_env(struct udevice *udev, const char *program)
218 if (run_program(program, udev->dev->subsystem, result, sizeof(result), &reslen, (udev_log_priority >= LOG_INFO)) != 0)
220 return import_keys_into_env(udev, result, reslen);
223 static int import_parent_into_env(struct udevice *udev, const char *filter)
225 struct sysfs_device *dev_parent;
228 dev_parent = sysfs_device_get_parent(udev->dev);
229 if (dev_parent != NULL) {
230 struct udevice *udev_parent;
231 struct name_entry *name_loop;
233 dbg("found parent '%s', get the node name", dev_parent->devpath);
234 udev_parent = udev_device_init();
235 if (udev_parent == NULL)
237 /* import the udev_db of the parent */
238 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
239 dbg("import stored parent env '%s'", udev_parent->name);
240 list_for_each_entry(name_loop, &udev_parent->env_list, node) {
241 char name[NAME_SIZE];
244 strlcpy(name, name_loop->name, sizeof(name));
245 pos = strchr(name, '=');
249 if (strcmp_pattern(filter, name) == 0) {
250 dbg("import key '%s'", name_loop->name);
251 name_list_add(&udev->env_list, name_loop->name, 0);
252 setenv(name, pos, 1);
254 dbg("skip key '%s'", name_loop->name);
259 dbg("parent not found in database");
260 udev_device_cleanup(udev_parent);
266 #define WAIT_LOOP_PER_SECOND 50
267 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
269 char devicepath[PATH_SIZE];
270 char filepath[PATH_SIZE];
272 int loop = timeout * WAIT_LOOP_PER_SECOND;
274 strlcpy(devicepath, sysfs_path, sizeof(devicepath));
275 strlcat(devicepath, udev->dev->devpath, sizeof(devicepath));
276 strlcpy(filepath, devicepath, sizeof(filepath));
277 strlcat(filepath, "/", sizeof(filepath));
278 strlcat(filepath, file, sizeof(filepath));
280 dbg("will wait %i sec for '%s'", timeout, filepath);
283 if (stat(filepath, &stats) == 0) {
284 info("file '%s' appeared after %i loops", filepath, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
287 /* make sure the device does not have disappeared in the meantime */
288 if (stat(devicepath, &stats) != 0) {
289 info("device disappeared while waiting for '%s'", filepath);
292 info("wait for '%s' for %i mseconds", filepath, 1000 / WAIT_LOOP_PER_SECOND);
293 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
295 err("waiting for '%s' failed", filepath);
299 void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
301 char temp[PATH_SIZE];
302 char temp2[PATH_SIZE];
303 char *head, *tail, *pos, *cpos, *attr, *rest;
322 static const struct subst_map {
325 enum subst_type type;
327 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
328 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
329 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
330 { .name = "id", .fmt = 'b', .type = SUBST_ID },
331 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
332 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
333 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
334 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
335 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
336 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
337 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
338 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
341 enum subst_type type;
342 const struct subst_map *subst;
347 while (head[0] != '\0') {
348 if (head[0] == '$') {
349 /* substitute named variable */
352 if (head[1] == '$') {
353 strlcpy(temp, head+2, sizeof(temp));
354 strlcpy(head+1, temp, maxsize);
359 for (subst = map; subst->name; subst++) {
360 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
362 tail = head + strlen(subst->name)+1;
363 dbg("will substitute format name '%s'", subst->name);
367 } else if (head[0] == '%') {
368 /* substitute format char */
371 if (head[1] == '%') {
372 strlcpy(temp, head+2, sizeof(temp));
373 strlcpy(head+1, temp, maxsize);
379 len = get_format_len(&tail);
380 for (subst = map; subst->name; subst++) {
381 if (tail[0] == subst->fmt) {
384 dbg("will substitute format char '%c'", subst->fmt);
393 attr = get_format_attribute(&tail);
394 strlcpy(temp, tail, sizeof(temp));
395 dbg("format=%i, string='%s', tail='%s'", type ,string, tail);
399 strlcat(string, udev->dev->devpath, maxsize);
400 dbg("substitute devpath '%s'", udev->dev->devpath);
402 case SUBST_KERNEL_NAME:
403 strlcat(string, udev->dev->kernel_name, maxsize);
404 dbg("substitute kernel name '%s'", udev->dev->kernel_name);
406 case SUBST_KERNEL_NUMBER:
407 strlcat(string, udev->dev->kernel_number, maxsize);
408 dbg("substitute kernel number '%s'", udev->dev->kernel_number);
411 if (udev->dev_parent != NULL) {
412 strlcat(string, udev->dev_parent->kernel_name, maxsize);
413 dbg("substitute id '%s'", udev->dev_parent->kernel_name);
417 sprintf(temp2, "%d", major(udev->devt));
418 strlcat(string, temp2, maxsize);
419 dbg("substitute major number '%s'", temp2);
422 sprintf(temp2, "%d", minor(udev->devt));
423 strlcat(string, temp2, maxsize);
424 dbg("substitute minor number '%s'", temp2);
427 if (udev->program_result[0] == '\0')
429 /* get part part of the result string */
432 i = strtoul(attr, &rest, 10);
434 dbg("request part #%d of result string", i);
435 cpos = udev->program_result;
437 while (cpos[0] != '\0' && !isspace(cpos[0]))
439 while (isspace(cpos[0]))
443 err("requested part of result string not found");
446 strlcpy(temp2, cpos, sizeof(temp2));
447 /* %{2+}c copies the whole string from the second part on */
448 if (rest[0] != '+') {
449 cpos = strchr(temp2, ' ');
453 strlcat(string, temp2, maxsize);
454 dbg("substitute part of result string '%s'", temp2);
456 strlcat(string, udev->program_result, maxsize);
457 dbg("substitute result string '%s'", udev->program_result);
462 dbg("missing attribute");
465 struct sysfs_device *dev_parent;
468 dev_parent = udev->dev;
470 dbg("looking at '%s'", dev_parent->devpath);
471 value = sysfs_attr_get_value(dev_parent->devpath, attr);
473 strlcpy(temp2, value, sizeof(temp2));
476 dev_parent = sysfs_device_get_parent(dev_parent);
477 } while (dev_parent != NULL);
479 /* strip trailing whitespace of sysfs value */
481 while (i > 0 && isspace(temp2[i-1]))
483 count = replace_untrusted_chars(temp2);
485 info("%i untrusted character(s) replaced" , count);
486 strlcat(string, temp2, maxsize);
487 dbg("substitute sysfs value '%s'", temp2);
492 struct sysfs_device *dev_parent;
494 dev_parent = sysfs_device_get_parent(udev->dev);
495 if (dev_parent != NULL) {
496 struct udevice *udev_parent;
498 dbg("found parent '%s', get the node name", dev_parent->devpath);
499 udev_parent = udev_device_init();
500 if (udev_parent != NULL) {
501 /* lookup the name in the udev_db with the DEVPATH of the parent */
502 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
503 strlcat(string, udev_parent->name, maxsize);
504 dbg("substitute parent node name'%s'", udev_parent->name);
506 dbg("parent not found in database");
507 udev_device_cleanup(udev_parent);
512 case SUBST_TEMP_NODE:
513 if (udev->tmp_node[0] == '\0') {
514 dbg("create temporary device node for callout");
515 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
516 udev_root, major(udev->devt), minor(udev->devt));
517 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
518 udev_node_mknod(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
520 strlcat(string, udev->tmp_node, maxsize);
521 dbg("substitute temporary device node name '%s'", udev->tmp_node);
524 strlcat(string, udev_root, maxsize);
525 dbg("substitute udev_root '%s'", udev_root);
529 dbg("missing attribute");
534 dbg("env '%s' not available", attr);
537 dbg("substitute env '%s=%s'", attr, pos);
538 strlcat(string, pos, maxsize);
541 err("unknown substitution type=%i", type);
544 /* possibly truncate to format-char specified length */
547 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
549 strlcat(string, temp, maxsize);
553 static char *key_val(struct udev_rule *rule, struct key *key)
555 return rule->buf + key->val_off;
558 static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
560 return rule->buf + pair->key_name_off;
563 static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
566 char value[PATH_SIZE];
570 if (key->operation != KEY_OP_MATCH &&
571 key->operation != KEY_OP_NOMATCH)
574 strlcpy(value, rule->buf + key->val_off, sizeof(value));
577 dbg("key %s value='%s'", key_name, key_value);
579 pos = strchr(key_value, '|');
584 dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
585 match = (strcmp_pattern(key_value, val) == 0);
586 if (match && (key->operation != KEY_OP_NOMATCH)) {
587 dbg("%s is true (matching value)", key_name);
590 if (!match && (key->operation == KEY_OP_NOMATCH)) {
591 dbg("%s is true (non-matching value)", key_name);
596 dbg("%s is false", key_name);
600 /* match a single rule against a given device and possibly its parent devices */
601 static int match_rule(struct udevice *udev, struct udev_rule *rule)
605 if (match_key("ACTION", rule, &rule->action, udev->action))
608 if (match_key("KERNEL", rule, &rule->kernel_name, udev->dev->kernel_name))
611 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
614 if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
617 /* compare NAME against a previously assigned value */
618 if (match_key("NAME", rule, &rule->name, udev->name))
621 for (i = 0; i < rule->env.count; i++) {
622 struct key_pair *pair = &rule->env.keys[i];
624 /* we only check for matches, assignments will be handled later */
625 if (pair->key.operation == KEY_OP_MATCH ||
626 pair->key.operation == KEY_OP_NOMATCH) {
627 const char *key_name = key_pair_name(rule, pair);
628 const char *value = getenv(key_name);
631 dbg("ENV{'%s'} is not set, treat as empty", key_name);
634 if (match_key("ENV", rule, &pair->key, value))
639 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
642 found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
643 if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
644 dbg("WAIT_FOR_SYSFS failed");
649 /* walk up the chain of parent devices and find a match */
650 udev->dev_parent = udev->dev;
652 /* check for matching driver */
653 if (match_key("DRIVER", rule, &rule->driver, udev->dev_parent->driver))
656 /* check for matching subsystem/bus value */
657 if (match_key("BUS", rule, &rule->bus, udev->dev_parent->subsystem))
660 /* check for matching bus id (device name) */
661 if (match_key("ID", rule, &rule->id, udev->dev_parent->kernel_name))
664 /* check for matching sysfs pairs */
665 if (rule->sysfs.count) {
666 dbg("check %i SYSFS keys", rule->sysfs.count);
667 for (i = 0; i < rule->sysfs.count; i++) {
668 struct key_pair *pair = &rule->sysfs.keys[i];
669 const char *key_name = key_pair_name(rule, pair);
670 const char *key_value = key_val(rule, &pair->key);
672 char val[VALUE_SIZE];
675 value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
677 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
680 strlcpy(val, value, sizeof(val));
682 /* strip trailing whitespace of value, if not asked to match for it */
683 len = strlen(key_value);
684 if (len > 0 && !isspace(key_value[len-1])) {
686 while (len > 0 && isspace(val[len-1]))
688 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
691 if (match_key("SYSFS", rule, &pair->key, val))
694 dbg("all %i SYSFS keys matched", rule->sysfs.count);
697 /* found matching device */
700 /* move to parent device */
701 dbg("try parent sysfs device");
702 udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
703 if (udev->dev_parent == NULL)
705 dbg("looking at dev_parent->devpath='%s'", udev->dev_parent->devpath);
706 dbg("looking at dev_parent->bus_kernel_name='%s'", udev->dev_parent->kernel_name);
709 /* execute external program */
710 if (rule->program.operation != KEY_OP_UNSET) {
711 char program[PATH_SIZE];
712 char result[PATH_SIZE];
714 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
715 udev_rules_apply_format(udev, program, sizeof(program));
716 if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
717 dbg("PROGRAM is false");
718 udev->program_result[0] = '\0';
719 if (rule->program.operation != KEY_OP_NOMATCH)
724 dbg("PROGRAM matches");
725 remove_trailing_chars(result, '\n');
726 count = replace_untrusted_chars(result);
728 info("%i untrusted character(s) replaced" , count);
729 dbg("result is '%s'", result);
730 strlcpy(udev->program_result, result, sizeof(udev->program_result));
731 dbg("PROGRAM returned successful");
732 if (rule->program.operation == KEY_OP_NOMATCH)
735 dbg("PROGRAM key is true");
738 /* check for matching result of external program */
739 if (match_key("RESULT", rule, &rule->result, udev->program_result))
742 /* import variables returned from program or or file into environment */
743 if (rule->import.operation != KEY_OP_UNSET) {
744 char import[PATH_SIZE];
747 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
748 udev_rules_apply_format(udev, import, sizeof(import));
749 dbg("check for IMPORT import='%s'", import);
750 if (rule->import_type == IMPORT_PROGRAM) {
751 rc = import_program_into_env(udev, import);
752 } else if (rule->import_type == IMPORT_FILE) {
753 dbg("import file import='%s'", import);
754 rc = import_file_into_env(udev, import);
755 } else if (rule->import_type == IMPORT_PARENT) {
756 dbg("import parent import='%s'", import);
757 rc = import_parent_into_env(udev, import);
760 dbg("IMPORT failed");
761 if (rule->import.operation != KEY_OP_NOMATCH)
764 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
765 dbg("IMPORT key is true");
768 /* rule matches, if we have ENV assignments export it */
769 for (i = 0; i < rule->env.count; i++) {
770 struct key_pair *pair = &rule->env.keys[i];
772 if (pair->key.operation == KEY_OP_ASSIGN) {
773 const char *key_name = key_pair_name(rule, pair);
774 const char *value = key_val(rule, &pair->key);
775 char *key_value = name_list_key_add(&udev->env_list, key_name, value);
776 if (key_value == NULL)
779 udev_rules_apply_format(udev, key_value, NAME_SIZE);
781 dbg("export ENV '%s'", key_value);
791 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
793 struct udev_rule *rule;
796 dbg("udev->dev->devpath='%s'", udev->dev->devpath);
797 dbg("udev->dev->kernel_name='%s'", udev->dev->kernel_name);
799 /* look for a matching rule to apply */
800 udev_rules_iter_init(rules);
802 rule = udev_rules_iter_next(rules);
807 (rule->name.operation == KEY_OP_ASSIGN ||
808 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
809 rule->name.operation == KEY_OP_ADD)) {
810 dbg("node name already set, rule ignored");
815 if (match_rule(udev, rule) == 0) {
817 if (rule->ignore_device) {
818 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
819 udev->ignore_device = 1;
822 if (rule->ignore_remove) {
823 udev->ignore_remove = 1;
824 dbg("remove event should be ignored");
826 /* apply all_partitions option only at a main block device */
827 if (rule->partitions &&
828 strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
829 udev->partitions = rule->partitions;
830 dbg("creation of partition nodes requested");
833 /* apply permissions */
834 if (!udev->mode_final && rule->mode != 0000) {
835 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
836 udev->mode_final = 1;
837 udev->mode = rule->mode;
838 dbg("applied mode=%#o to '%s'", rule->mode, udev->dev->kernel_name);
840 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
841 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
842 udev->owner_final = 1;
843 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
844 udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
845 dbg("applied owner='%s' to '%s'", udev->owner, udev->dev->kernel_name);
847 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
848 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
849 udev->group_final = 1;
850 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
851 udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
852 dbg("applied group='%s' to '%s'", udev->group, udev->dev->kernel_name);
855 /* collect symlinks */
856 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
857 char temp[PATH_SIZE];
861 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
862 udev->symlink_final = 1;
863 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
864 info("reset symlink list");
865 name_list_cleanup(&udev->symlink_list);
867 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
868 udev_rules_apply_format(udev, temp, sizeof(temp));
869 count = replace_untrusted_chars(temp);
871 info("%i untrusted character(s) replaced" , count);
872 dbg("rule applied, added symlink(s) '%s'", temp);
874 /* add multiple symlinks separated by spaces */
876 while (isspace(pos[0]))
878 next = strchr(pos, ' ');
881 info("add symlink '%s'", pos);
882 name_list_add(&udev->symlink_list, pos, 0);
883 while (isspace(next[1]))
886 next = strchr(pos, ' ');
888 if (pos[0] != '\0') {
889 info("add symlink '%s'", pos);
890 name_list_add(&udev->symlink_list, pos, 0);
894 /* set name, later rules with name set will be ignored */
895 if (rule->name.operation == KEY_OP_ASSIGN ||
896 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
897 rule->name.operation == KEY_OP_ADD) {
901 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
902 udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
903 count = replace_untrusted_chars(udev->name);
905 info("%i untrusted character(s) replaced", count);
907 info("rule applied, '%s' becomes '%s'", udev->dev->kernel_name, udev->name);
908 if (strcmp(udev->dev->subsystem, "net") != 0)
909 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
910 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
913 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
914 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
916 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
917 info("reset run list");
918 name_list_cleanup(&udev->run_list);
920 dbg("add run '%s'", key_val(rule, &rule->run));
921 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
924 if (rule->last_rule) {
925 dbg("last rule to be applied");
929 if (rule->goto_label.operation != KEY_OP_UNSET) {
930 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
931 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
937 strlcpy(udev->name, udev->dev->kernel_name, sizeof(udev->name));
938 info("no node name set, will use kernel name '%s'", udev->name);
941 if (udev->tmp_node[0] != '\0') {
942 dbg("removing temporary device node");
943 unlink_secure(udev->tmp_node);
944 udev->tmp_node[0] = '\0';
950 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
952 struct udev_rule *rule;
954 dbg("udev->kernel_name='%s'", udev->dev->kernel_name);
956 /* look for a matching rule to apply */
957 udev_rules_iter_init(rules);
959 rule = udev_rules_iter_next(rules);
964 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
965 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
966 dbg("skip rule that names a device");
970 if (match_rule(udev, rule) == 0) {
971 if (rule->ignore_device) {
972 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
973 udev->ignore_device = 1;
977 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
978 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
979 info("reset run list");
980 name_list_cleanup(&udev->run_list);
982 dbg("add run '%s'", key_val(rule, &rule->run));
983 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
984 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
988 if (rule->last_rule) {
989 dbg("last rule to be applied");
993 if (rule->goto_label.operation != KEY_OP_UNSET) {
994 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
995 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));