2 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
3 * Copyright (C) 2003-2006 Kay Sievers <kay.sievers@vrfy.org>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation version 2 of the License.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
34 #include "udev_rules.h"
37 /* extract possible {attr} and move str behind it */
38 static char *get_format_attribute(char **str)
44 pos = strchr(*str, '}');
46 err("missing closing brace for format");
52 dbg("attribute='%s', str='%s'", attr, *str);
57 /* extract possible format length and move str behind it*/
58 static int get_format_len(char **str)
63 if (isdigit(*str[0])) {
64 num = (int) strtoul(*str, &tail, 10);
67 dbg("format length=%i", num);
70 err("format parsing error '%s'", *str);
76 static int get_key(char **line, char **key, char **value)
85 if (strchr(linepos, '\\')) {
86 dbg("escaped characters are not supported, skip");
91 while (isspace(linepos[0]))
98 if (linepos[0] == '\0')
100 if (isspace(linepos[0]))
102 if (linepos[0] == '=')
110 /* skip whitespace */
111 while (isspace(linepos[0]))
115 if (linepos[0] == '"') {
117 temp = strchr(linepos, '"');
119 dbg("missing closing quote");
122 dbg("value is quoted");
124 } else if (linepos[0] == '\'') {
126 temp = strchr(linepos, '\'');
128 dbg("missing closing quote");
131 dbg("value is quoted");
133 } else if (linepos[0] == '\0') {
134 dbg("value is empty");
137 while (temp[0] && !isspace(temp[0]))
146 static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
148 char line[LINE_SIZE];
157 /* loop through the whole buffer */
160 while (cur < bufsize) {
161 count = buf_get_line(buf, bufsize, cur);
166 if (count >= sizeof(line)) {
167 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
171 /* eat the whitespace */
172 while ((count > 0) && isspace(bufline[0])) {
179 /* see if this is a comment */
180 if (bufline[0] == COMMENT_CHARACTER)
183 memcpy(line, bufline, count);
187 if (get_key(&linepos, &variable, &value) == 0) {
188 dbg("import '%s=%s'", variable, value);
189 name_list_key_add(&udev->env_list, variable, value);
190 setenv(variable, value, 1);
197 static int import_file_into_env(struct udevice *udev, const char *filename)
202 if (file_map(filename, &buf, &bufsize) != 0) {
203 err("can't open '%s': %s", filename, strerror(errno));
206 import_keys_into_env(udev, buf, bufsize);
207 file_unmap(buf, bufsize);
212 static int import_program_into_env(struct udevice *udev, const char *program)
217 if (run_program(program, udev->dev->subsystem, result, sizeof(result), &reslen, (udev_log_priority >= LOG_INFO)) != 0)
219 return import_keys_into_env(udev, result, reslen);
222 static int import_parent_into_env(struct udevice *udev, const char *filter)
224 struct sysfs_device *dev_parent;
227 dev_parent = sysfs_device_get_parent(udev->dev);
228 if (dev_parent != NULL) {
229 struct udevice *udev_parent;
230 struct name_entry *name_loop;
232 dbg("found parent '%s', get the node name", dev_parent->devpath);
233 udev_parent = udev_device_init();
234 if (udev_parent == NULL)
236 /* import the udev_db of the parent */
237 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
238 dbg("import stored parent env '%s'", udev_parent->name);
239 list_for_each_entry(name_loop, &udev_parent->env_list, node) {
240 char name[NAME_SIZE];
243 strlcpy(name, name_loop->name, sizeof(name));
244 pos = strchr(name, '=');
248 if (fnmatch(filter, name, 0) == 0) {
249 dbg("import key '%s'", name_loop->name);
250 name_list_add(&udev->env_list, name_loop->name, 0);
251 setenv(name, pos, 1);
253 dbg("skip key '%s'", name_loop->name);
258 dbg("parent not found in database");
259 udev_device_cleanup(udev_parent);
265 #define WAIT_LOOP_PER_SECOND 50
266 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
268 char devicepath[PATH_SIZE];
269 char filepath[PATH_SIZE];
271 int loop = timeout * WAIT_LOOP_PER_SECOND;
273 strlcpy(devicepath, sysfs_path, sizeof(devicepath));
274 strlcat(devicepath, udev->dev->devpath, sizeof(devicepath));
275 strlcpy(filepath, devicepath, sizeof(filepath));
276 strlcat(filepath, "/", sizeof(filepath));
277 strlcat(filepath, file, sizeof(filepath));
279 dbg("will wait %i sec for '%s'", timeout, filepath);
282 if (stat(filepath, &stats) == 0) {
283 info("file '%s' appeared after %i loops", filepath, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
286 /* make sure the device does not have disappeared in the meantime */
287 if (stat(devicepath, &stats) != 0) {
288 info("device disappeared while waiting for '%s'", filepath);
291 info("wait for '%s' for %i mseconds", filepath, 1000 / WAIT_LOOP_PER_SECOND);
292 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
294 err("waiting for '%s' failed", filepath);
298 void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
300 char temp[PATH_SIZE];
301 char temp2[PATH_SIZE];
302 char *head, *tail, *pos, *cpos, *attr, *rest;
321 static const struct subst_map {
324 enum subst_type type;
326 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
327 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
328 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL },
329 { .name = "id", .fmt = 'b', .type = SUBST_ID },
330 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
331 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
332 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
333 { .name = "attr", .fmt = 's', .type = SUBST_ATTR },
334 { .name = "sysfs", .fmt = 's', .type = SUBST_ATTR },
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);
403 strlcat(string, udev->dev->kernel, maxsize);
404 dbg("substitute kernel name '%s'", udev->dev->kernel);
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, maxsize);
413 dbg("substitute id '%s'", udev->dev_parent->kernel);
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 = (fnmatch(key_value, val, 0) == 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, udev->dev->kernel))
611 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
614 if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
617 if (match_key("DRIVER", rule, &rule->driver, udev->dev->driver))
620 /* match NAME against a value assigned by an earlier rule */
621 if (match_key("NAME", rule, &rule->name, udev->name))
624 for (i = 0; i < rule->env.count; i++) {
625 struct key_pair *pair = &rule->env.keys[i];
627 /* we only check for matches, assignments will be handled later */
628 if (pair->key.operation == KEY_OP_MATCH ||
629 pair->key.operation == KEY_OP_NOMATCH) {
630 const char *key_name = key_pair_name(rule, pair);
631 const char *value = getenv(key_name);
634 dbg("ENV{'%s'} is not set, treat as empty", key_name);
637 if (match_key("ENV", rule, &pair->key, value))
642 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
645 found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
646 if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH))
650 /* check for matching sysfs attribute pairs */
651 for (i = 0; i < rule->attr.count; i++) {
652 struct key_pair *pair = &rule->attr.keys[i];
654 if (pair->key.operation == KEY_OP_MATCH ||
655 pair->key.operation == KEY_OP_NOMATCH) {
656 const char *key_name = key_pair_name(rule, pair);
657 const char *key_value = key_val(rule, &pair->key);
659 char val[VALUE_SIZE];
662 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
665 strlcpy(val, value, sizeof(val));
667 /* strip trailing whitespace of value, if not asked to match for it */
668 len = strlen(key_value);
669 if (len > 0 && !isspace(key_value[len-1])) {
671 while (len > 0 && isspace(val[len-1]))
673 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
676 if (match_key("ATTR", rule, &pair->key, val))
681 /* walk up the chain of parent devices and find a match */
682 udev->dev_parent = udev->dev;
684 /* check for matching kernel device name */
685 if (match_key("KERNELS", rule, &rule->kernels, udev->dev_parent->kernel))
688 /* check for matching subsystem value */
689 if (match_key("SUBSYSTEMS", rule, &rule->subsystems, udev->dev_parent->subsystem))
692 /* check for matching driver */
693 if (match_key("DRIVERS", rule, &rule->drivers, udev->dev_parent->driver))
696 /* check for matching sysfs attrubute pairs */
697 for (i = 0; i < rule->attrs.count; i++) {
698 struct key_pair *pair = &rule->attrs.keys[i];
700 if (pair->key.operation == KEY_OP_MATCH ||
701 pair->key.operation == KEY_OP_NOMATCH) {
702 const char *key_name = key_pair_name(rule, pair);
703 const char *key_value = key_val(rule, &pair->key);
705 char val[VALUE_SIZE];
708 value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
710 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
713 strlcpy(val, value, sizeof(val));
715 /* strip trailing whitespace of value, if not asked to match for it */
716 len = strlen(key_value);
717 if (len > 0 && !isspace(key_value[len-1])) {
719 while (len > 0 && isspace(val[len-1]))
721 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
724 if (match_key("ATTRS", rule, &pair->key, val))
729 /* found matching device */
732 /* move to parent device */
733 dbg("try parent sysfs device");
734 udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
735 if (udev->dev_parent == NULL)
737 dbg("looking at dev_parent->devpath='%s'", udev->dev_parent->devpath);
738 dbg("looking at dev_parent->kernel='%s'", udev->dev_parent->kernel);
741 /* execute external program */
742 if (rule->program.operation != KEY_OP_UNSET) {
743 char program[PATH_SIZE];
744 char result[PATH_SIZE];
746 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
747 udev_rules_apply_format(udev, program, sizeof(program));
748 if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
749 dbg("PROGRAM is false");
750 udev->program_result[0] = '\0';
751 if (rule->program.operation != KEY_OP_NOMATCH)
756 dbg("PROGRAM matches");
757 remove_trailing_chars(result, '\n');
758 count = replace_untrusted_chars(result);
760 info("%i untrusted character(s) replaced" , count);
761 dbg("result is '%s'", result);
762 strlcpy(udev->program_result, result, sizeof(udev->program_result));
763 dbg("PROGRAM returned successful");
764 if (rule->program.operation == KEY_OP_NOMATCH)
767 dbg("PROGRAM key is true");
770 /* check for matching result of external program */
771 if (match_key("RESULT", rule, &rule->result, udev->program_result))
774 /* import variables returned from program or or file into environment */
775 if (rule->import.operation != KEY_OP_UNSET) {
776 char import[PATH_SIZE];
779 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
780 udev_rules_apply_format(udev, import, sizeof(import));
781 dbg("check for IMPORT import='%s'", import);
782 if (rule->import_type == IMPORT_PROGRAM) {
783 rc = import_program_into_env(udev, import);
784 } else if (rule->import_type == IMPORT_FILE) {
785 dbg("import file import='%s'", import);
786 rc = import_file_into_env(udev, import);
787 } else if (rule->import_type == IMPORT_PARENT) {
788 dbg("import parent import='%s'", import);
789 rc = import_parent_into_env(udev, import);
792 dbg("IMPORT failed");
793 if (rule->import.operation != KEY_OP_NOMATCH)
796 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
797 dbg("IMPORT key is true");
800 /* rule matches, if we have ENV assignments export it */
801 for (i = 0; i < rule->env.count; i++) {
802 struct key_pair *pair = &rule->env.keys[i];
804 if (pair->key.operation == KEY_OP_ASSIGN) {
805 const char *key_name = key_pair_name(rule, pair);
806 const char *value = key_val(rule, &pair->key);
807 char *key_value = name_list_key_add(&udev->env_list, key_name, value);
808 if (key_value == NULL)
811 udev_rules_apply_format(udev, key_value, NAME_SIZE);
813 dbg("export ENV '%s'", key_value);
817 /* if we have ATTR assignements write value to sysfs file */
818 for (i = 0; i < rule->attr.count; i++) {
819 struct key_pair *pair = &rule->attr.keys[i];
821 if (pair->key.operation == KEY_OP_ASSIGN) {
822 const char *key_name = key_pair_name(rule, pair);
823 const char *key_value = key_val(rule, &pair->key);
824 char attr[PATH_SIZE];
827 strlcpy(attr, sysfs_path, sizeof(attr));
828 strlcat(attr, udev->dev->devpath, sizeof(attr));
829 strlcat(attr, "/", sizeof(attr));
830 strlcat(attr, key_name, sizeof(attr));
831 dbg("write '%s' to '%s'", key_value, attr);
832 f = fopen(attr, "w");
834 if (fprintf(f, "%s\n", key_value) <= 0)
835 err("error writing ATTR{%s}: %s", attr, strerror(errno));
838 err("error opening ATTR{%s} for writing: %s", attr, strerror(errno));
847 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
849 struct udev_rule *rule;
852 dbg("udev->dev->devpath='%s'", udev->dev->devpath);
853 dbg("udev->dev->kernel='%s'", udev->dev->kernel);
855 /* look for a matching rule to apply */
856 udev_rules_iter_init(rules);
858 rule = udev_rules_iter_next(rules);
863 (rule->name.operation == KEY_OP_ASSIGN ||
864 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
865 rule->name.operation == KEY_OP_ADD)) {
866 dbg("node name already set, rule ignored");
871 if (match_rule(udev, rule) == 0) {
873 if (rule->ignore_device) {
874 info("rule applied, '%s' is ignored", udev->dev->kernel);
875 udev->ignore_device = 1;
878 if (rule->ignore_remove) {
879 udev->ignore_remove = 1;
880 dbg("remove event should be ignored");
882 /* apply all_partitions option only at a main block device */
883 if (rule->partitions &&
884 strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
885 udev->partitions = rule->partitions;
886 dbg("creation of partition nodes requested");
889 /* apply permissions */
890 if (!udev->mode_final && rule->mode != 0000) {
891 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
892 udev->mode_final = 1;
893 udev->mode = rule->mode;
894 dbg("applied mode=%#o to '%s'", rule->mode, udev->dev->kernel);
896 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
897 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
898 udev->owner_final = 1;
899 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
900 udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
901 dbg("applied owner='%s' to '%s'", udev->owner, udev->dev->kernel);
903 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
904 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
905 udev->group_final = 1;
906 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
907 udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
908 dbg("applied group='%s' to '%s'", udev->group, udev->dev->kernel);
911 /* collect symlinks */
912 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
913 char temp[PATH_SIZE];
917 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
918 udev->symlink_final = 1;
919 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
920 info("reset symlink list");
921 name_list_cleanup(&udev->symlink_list);
923 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
924 udev_rules_apply_format(udev, temp, sizeof(temp));
925 count = replace_untrusted_chars(temp);
927 info("%i untrusted character(s) replaced" , count);
928 dbg("rule applied, added symlink(s) '%s'", temp);
930 /* add multiple symlinks separated by spaces */
932 while (isspace(pos[0]))
934 next = strchr(pos, ' ');
937 info("add symlink '%s'", pos);
938 name_list_add(&udev->symlink_list, pos, 0);
939 while (isspace(next[1]))
942 next = strchr(pos, ' ');
944 if (pos[0] != '\0') {
945 info("add symlink '%s'", pos);
946 name_list_add(&udev->symlink_list, pos, 0);
950 /* set name, later rules with name set will be ignored */
951 if (rule->name.operation == KEY_OP_ASSIGN ||
952 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
953 rule->name.operation == KEY_OP_ADD) {
957 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
958 udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
959 count = replace_untrusted_chars(udev->name);
961 info("%i untrusted character(s) replaced", count);
963 info("rule applied, '%s' becomes '%s'", udev->dev->kernel, udev->name);
964 if (strcmp(udev->dev->subsystem, "net") != 0)
965 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
966 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
969 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
970 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
972 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
973 info("reset run list");
974 name_list_cleanup(&udev->run_list);
976 dbg("add run '%s'", key_val(rule, &rule->run));
977 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
980 if (rule->last_rule) {
981 dbg("last rule to be applied");
985 if (rule->goto_label.operation != KEY_OP_UNSET) {
986 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
987 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
993 strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
994 info("no node name set, will use kernel name '%s'", udev->name);
997 if (udev->tmp_node[0] != '\0') {
998 dbg("removing temporary device node");
999 unlink_secure(udev->tmp_node);
1000 udev->tmp_node[0] = '\0';
1006 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
1008 struct udev_rule *rule;
1010 dbg("udev->kernel='%s'", udev->dev->kernel);
1012 /* look for a matching rule to apply */
1013 udev_rules_iter_init(rules);
1015 rule = udev_rules_iter_next(rules);
1019 dbg("process rule");
1020 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
1021 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
1022 dbg("skip rule that names a device");
1026 if (match_rule(udev, rule) == 0) {
1027 if (rule->ignore_device) {
1028 info("rule applied, '%s' is ignored", udev->dev->kernel);
1029 udev->ignore_device = 1;
1033 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1034 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1035 info("reset run list");
1036 name_list_cleanup(&udev->run_list);
1038 dbg("add run '%s'", key_val(rule, &rule->run));
1039 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1040 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1044 if (rule->last_rule) {
1045 dbg("last rule to be applied");
1049 if (rule->goto_label.operation != KEY_OP_UNSET) {
1050 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1051 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));