4 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 2003-2005 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 static int match_name_and_get_number(const char *base, const char *devname)
272 baselen = strlen(base);
273 if (strncmp(base, devname, baselen) != 0)
275 if (devname[baselen] == '\0')
277 if (!isdigit(devname[baselen]))
279 num = strtoul(&devname[baselen], &endptr, 10);
280 if (endptr[0] != '\0')
285 /* finds the lowest positive device number such that <name>N isn't present in the udevdb
286 * if <name> doesn't exist, 0 is returned, N otherwise */
287 static int find_free_number(const char *base, const char *devpath)
289 char db_devpath[PATH_SIZE];
290 char filename[PATH_SIZE];
291 struct udevice *udev_db;
294 /* check if the device already owns a matching name */
295 udev_db = udev_device_init();
298 if (udev_db_get_device(udev_db, devpath) == 0) {
299 struct name_entry *name_loop;
302 devnum = match_name_and_get_number(base, udev_db->name);
305 dbg("device '%s', already has the node '%s' with num %u, use it", devpath, base, num);
308 list_for_each_entry(name_loop, &udev_db->symlink_list, node) {
309 devnum = match_name_and_get_number(base, name_loop->name);
312 dbg("device '%s', already has a symlink '%s' with num %u, use it", devpath, base, num);
318 /* just search the database again and again until a free name is found */
319 strlcpy(filename, base, sizeof(filename));
321 dbg("look for existing node '%s'", filename);
322 if (udev_db_lookup_name(filename, db_devpath, sizeof(db_devpath)) != 0) {
323 dbg("free num=%d", num);
329 err("find_free_number aborted at num=%d", num);
333 snprintf(filename, sizeof(filename), "%s%d", base, num);
334 filename[sizeof(filename)-1] = '\0';
338 udev_device_cleanup(udev_db);
342 #define WAIT_LOOP_PER_SECOND 50
343 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
345 char devicepath[PATH_SIZE];
346 char filepath[PATH_SIZE];
348 int loop = timeout * WAIT_LOOP_PER_SECOND;
350 strlcpy(devicepath, sysfs_path, sizeof(devicepath));
351 strlcat(devicepath, udev->dev->devpath, sizeof(devicepath));
352 strlcpy(filepath, devicepath, sizeof(filepath));
353 strlcat(filepath, "/", sizeof(filepath));
354 strlcat(filepath, file, sizeof(filepath));
356 dbg("will wait %i sec for '%s'", timeout, filepath);
359 if (stat(filepath, &stats) == 0) {
360 info("file '%s' appeared after %i loops", filepath, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
363 /* make sure the device does not have disappeared in the meantime */
364 if (stat(devicepath, &stats) != 0) {
365 info("device disappeared while waiting for '%s'", filepath);
368 info("wait for '%s' for %i mseconds", filepath, 1000 / WAIT_LOOP_PER_SECOND);
369 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
371 err("waiting for '%s' failed", filepath);
375 void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
377 char temp[PATH_SIZE];
378 char temp2[PATH_SIZE];
379 char *head, *tail, *pos, *cpos, *attr, *rest;
383 unsigned int next_free_number;
401 static const struct subst_map {
404 enum subst_type type;
406 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
407 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
408 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
409 { .name = "id", .fmt = 'b', .type = SUBST_ID },
410 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
411 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
412 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
413 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
414 { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
415 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
416 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
417 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
418 { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
419 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
422 enum subst_type type;
423 const struct subst_map *subst;
428 while (head[0] != '\0') {
429 if (head[0] == '$') {
430 /* substitute named variable */
433 if (head[1] == '$') {
434 strlcpy(temp, head+2, sizeof(temp));
435 strlcpy(head+1, temp, maxsize);
440 for (subst = map; subst->name; subst++) {
441 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
443 tail = head + strlen(subst->name)+1;
444 dbg("will substitute format name '%s'", subst->name);
449 else if (head[0] == '%') {
450 /* substitute format char */
453 if (head[1] == '%') {
454 strlcpy(temp, head+2, sizeof(temp));
455 strlcpy(head+1, temp, maxsize);
461 len = get_format_len(&tail);
462 for (subst = map; subst->name; subst++) {
463 if (tail[0] == subst->fmt) {
466 dbg("will substitute format char '%c'", subst->fmt);
475 attr = get_format_attribute(&tail);
476 strlcpy(temp, tail, sizeof(temp));
477 dbg("format=%i, string='%s', tail='%s'", type ,string, tail);
481 strlcat(string, udev->dev->devpath, maxsize);
482 dbg("substitute devpath '%s'", udev->dev->devpath);
484 case SUBST_KERNEL_NAME:
485 strlcat(string, udev->dev->kernel_name, maxsize);
486 dbg("substitute kernel name '%s'", udev->dev->kernel_name);
488 case SUBST_KERNEL_NUMBER:
489 strlcat(string, udev->dev->kernel_number, maxsize);
490 dbg("substitute kernel number '%s'", udev->dev->kernel_number);
493 if (udev->dev_parent != NULL) {
494 strlcat(string, udev->dev_parent->kernel_name, maxsize);
495 dbg("substitute id '%s'", udev->dev_parent->kernel_name);
499 sprintf(temp2, "%d", major(udev->devt));
500 strlcat(string, temp2, maxsize);
501 dbg("substitute major number '%s'", temp2);
504 sprintf(temp2, "%d", minor(udev->devt));
505 strlcat(string, temp2, maxsize);
506 dbg("substitute minor number '%s'", temp2);
509 if (udev->program_result[0] == '\0')
511 /* get part part of the result string */
514 i = strtoul(attr, &rest, 10);
516 dbg("request part #%d of result string", i);
517 cpos = udev->program_result;
519 while (cpos[0] != '\0' && !isspace(cpos[0]))
521 while (isspace(cpos[0]))
525 err("requested part of result string not found");
528 strlcpy(temp2, cpos, sizeof(temp2));
529 /* %{2+}c copies the whole string from the second part on */
530 if (rest[0] != '+') {
531 cpos = strchr(temp2, ' ');
535 strlcat(string, temp2, maxsize);
536 dbg("substitute part of result string '%s'", temp2);
538 strlcat(string, udev->program_result, maxsize);
539 dbg("substitute result string '%s'", udev->program_result);
544 dbg("missing attribute");
547 struct sysfs_device *dev_parent;
550 dev_parent = udev->dev;
552 dbg("looking at '%s'", dev_parent->devpath);
553 value = sysfs_attr_get_value(dev_parent->devpath, attr);
555 strlcpy(temp2, value, sizeof(temp2));
558 dev_parent = sysfs_device_get_parent(dev_parent);
559 } while (dev_parent != NULL);
561 /* strip trailing whitespace of sysfs value */
563 while (i > 0 && isspace(temp2[i-1]))
565 count = replace_untrusted_chars(temp2);
567 info("%i untrusted character(s) replaced" , count);
568 strlcat(string, temp2, maxsize);
569 dbg("substitute sysfs value '%s'", temp2);
573 next_free_number = find_free_number(string, udev->dev->devpath);
574 if (next_free_number > 0) {
575 sprintf(temp2, "%d", next_free_number);
576 strlcat(string, temp2, maxsize);
581 struct sysfs_device *dev_parent;
583 dev_parent = sysfs_device_get_parent(udev->dev);
584 if (dev_parent != NULL) {
585 struct udevice *udev_parent;
587 dbg("found parent '%s', get the node name", dev_parent->devpath);
588 udev_parent = udev_device_init();
589 if (udev_parent != NULL) {
590 /* lookup the name in the udev_db with the DEVPATH of the parent */
591 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
592 strlcat(string, udev_parent->name, maxsize);
593 dbg("substitute parent node name'%s'", udev_parent->name);
595 dbg("parent not found in database");
596 udev_device_cleanup(udev_parent);
601 case SUBST_TEMP_NODE:
602 if (udev->tmp_node[0] == '\0') {
603 dbg("create temporary device node for callout");
604 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
605 udev_root, major(udev->devt), minor(udev->devt));
606 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
607 udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
609 strlcat(string, udev->tmp_node, maxsize);
610 dbg("substitute temporary device node name '%s'", udev->tmp_node);
613 strlcat(string, udev_root, maxsize);
614 dbg("substitute udev_root '%s'", udev_root);
620 value = sysfs_attr_get_value(udev->dev->devpath, "modalias");
622 strlcat(string, value, maxsize);
623 dbg("substitute MODALIAS '%s'", temp2);
629 dbg("missing attribute");
634 dbg("env '%s' not available", attr);
637 dbg("substitute env '%s=%s'", attr, pos);
638 strlcat(string, pos, maxsize);
641 err("unknown substitution type=%i", type);
644 /* possibly truncate to format-char specified length */
647 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
649 strlcat(string, temp, maxsize);
653 static char *key_val(struct udev_rule *rule, struct key *key)
655 return rule->buf + key->val_off;
658 static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
660 return rule->buf + pair->key_name_off;
663 static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
666 char value[PATH_SIZE];
670 if (key->operation == KEY_OP_UNSET)
673 strlcpy(value, rule->buf + key->val_off, sizeof(value));
676 dbg("key %s value='%s'", key_name, key_value);
678 pos = strchr(key_value, '|');
683 dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
684 match = (strcmp_pattern(key_value, val) == 0);
685 if (match && (key->operation != KEY_OP_NOMATCH)) {
686 dbg("%s is true (matching value)", key_name);
689 if (!match && (key->operation == KEY_OP_NOMATCH)) {
690 dbg("%s is true (non-matching value)", key_name);
695 dbg("%s is false", key_name);
699 /* match a single rule against a given device and possibly its parent devices */
700 static int match_rule(struct udevice *udev, struct udev_rule *rule)
704 if (match_key("ACTION", rule, &rule->action, udev->action))
707 if (match_key("KERNEL", rule, &rule->kernel_name, udev->dev->kernel_name))
710 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
713 if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
716 if (rule->modalias.operation != KEY_OP_UNSET) {
719 value = sysfs_attr_get_value(udev->dev->devpath, "modalias");
721 dbg("MODALIAS value not found");
724 if (match_key("MODALIAS", rule, &rule->modalias, value))
728 for (i = 0; i < rule->env.count; i++) {
729 struct key_pair *pair = &rule->env.keys[i];
731 /* we only check for matches, assignments will be handled later */
732 if (pair->key.operation != KEY_OP_ASSIGN) {
733 const char *key_name = key_pair_name(rule, pair);
734 const char *value = getenv(key_name);
737 dbg("ENV{'%s'} is not set, treat as empty", key_name);
740 if (match_key("ENV", rule, &pair->key, value))
745 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
748 found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
749 if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
750 dbg("WAIT_FOR_SYSFS failed");
755 /* walk up the chain of parent devices and find a match */
756 udev->dev_parent = udev->dev;
758 /* check for matching driver */
759 if (rule->driver.operation != KEY_OP_UNSET) {
760 if (match_key("DRIVER", rule, &rule->driver, udev->dev_parent->driver))
764 /* check for matching subsystem/bus value */
765 if (rule->bus.operation != KEY_OP_UNSET) {
766 if (match_key("BUS", rule, &rule->bus, udev->dev_parent->subsystem))
770 /* check for matching bus id (device name) */
771 if (rule->id.operation != KEY_OP_UNSET) {
772 if (match_key("ID", rule, &rule->id, udev->dev_parent->kernel_name))
776 /* check for matching sysfs pairs */
777 if (rule->sysfs.count) {
778 dbg("check %i SYSFS keys", rule->sysfs.count);
779 for (i = 0; i < rule->sysfs.count; i++) {
780 struct key_pair *pair = &rule->sysfs.keys[i];
781 const char *key_name = key_pair_name(rule, pair);
782 const char *key_value = key_val(rule, &pair->key);
784 char val[VALUE_SIZE];
787 value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
789 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
792 strlcpy(val, value, sizeof(val));
794 /* strip trailing whitespace of value, if not asked to match for it */
795 len = strlen(key_value);
796 if (len > 0 && !isspace(key_value[len-1])) {
798 while (len > 0 && isspace(val[len-1]))
800 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
803 if (match_key("SYSFS", rule, &pair->key, val))
806 dbg("all %i SYSFS keys matched", rule->sysfs.count);
809 /* found matching device */
812 /* move to parent device */
813 dbg("try parent sysfs device");
814 udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
815 if (udev->dev_parent == NULL)
817 dbg("looking at dev_parent->devpath='%s'", udev->dev_parent->devpath);
818 dbg("looking at dev_parent->bus_kernel_name='%s'", udev->dev_parent->kernel_name);
821 /* execute external program */
822 if (rule->program.operation != KEY_OP_UNSET) {
823 char program[PATH_SIZE];
824 char result[PATH_SIZE];
826 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
827 udev_rules_apply_format(udev, program, sizeof(program));
828 if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
829 dbg("PROGRAM is false");
830 udev->program_result[0] = '\0';
831 if (rule->program.operation != KEY_OP_NOMATCH)
836 dbg("PROGRAM matches");
837 remove_trailing_chars(result, '\n');
838 count = replace_untrusted_chars(result);
840 info("%i untrusted character(s) replaced" , count);
841 dbg("result is '%s'", result);
842 strlcpy(udev->program_result, result, sizeof(udev->program_result));
843 dbg("PROGRAM returned successful");
844 if (rule->program.operation == KEY_OP_NOMATCH)
847 dbg("PROGRAM key is true");
850 /* check for matching result of external program */
851 if (match_key("RESULT", rule, &rule->result, udev->program_result))
854 /* import variables returned from program or or file into environment */
855 if (rule->import.operation != KEY_OP_UNSET) {
856 char import[PATH_SIZE];
859 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
860 udev_rules_apply_format(udev, import, sizeof(import));
861 dbg("check for IMPORT import='%s'", import);
862 if (rule->import_type == IMPORT_PROGRAM) {
863 rc = import_program_into_env(udev, import);
864 } else if (rule->import_type == IMPORT_FILE) {
865 dbg("import file import='%s'", import);
866 rc = import_file_into_env(udev, import);
867 } else if (rule->import_type == IMPORT_PARENT) {
868 dbg("import parent import='%s'", import);
869 rc = import_parent_into_env(udev, import);
872 dbg("IMPORT failed");
873 if (rule->import.operation != KEY_OP_NOMATCH)
876 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
877 dbg("IMPORT key is true");
880 /* rule matches, if we have ENV assignments export it */
881 for (i = 0; i < rule->env.count; i++) {
882 struct key_pair *pair = &rule->env.keys[i];
884 if (pair->key.operation == KEY_OP_ASSIGN) {
885 const char *key_name = key_pair_name(rule, pair);
886 const char *value = key_val(rule, &pair->key);
888 name_list_key_add(&udev->env_list, key_name, value);
889 setenv(key_name, value, 1);
890 dbg("export ENV '%s=%s'", key_name, value);
900 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
902 struct udev_rule *rule;
905 dbg("udev->dev->devpath='%s'", udev->dev->devpath);
906 dbg("udev->dev->kernel_name='%s'", udev->dev->kernel_name);
908 /* look for a matching rule to apply */
909 udev_rules_iter_init(rules);
911 rule = udev_rules_iter_next(rules);
915 if (name_set && rule->name.operation != KEY_OP_UNSET) {
916 dbg("node name already set, rule ignored");
921 if (match_rule(udev, rule) == 0) {
923 if (rule->ignore_device) {
924 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
925 udev->ignore_device = 1;
928 if (rule->ignore_remove) {
929 udev->ignore_remove = 1;
930 dbg("remove event should be ignored");
932 /* apply all_partitions option only at a main block device */
933 if (rule->partitions &&
934 strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
935 udev->partitions = rule->partitions;
936 dbg("creation of partition nodes requested");
939 /* apply permissions */
940 if (!udev->mode_final && rule->mode != 0000) {
941 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
942 udev->mode_final = 1;
943 udev->mode = rule->mode;
944 dbg("applied mode=%#o to '%s'", rule->mode, udev->dev->kernel_name);
946 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
947 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
948 udev->owner_final = 1;
949 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
950 udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
951 dbg("applied owner='%s' to '%s'", udev->owner, udev->dev->kernel_name);
953 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
954 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
955 udev->group_final = 1;
956 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
957 udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
958 dbg("applied group='%s' to '%s'", udev->group, udev->dev->kernel_name);
961 /* collect symlinks */
962 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
963 char temp[PATH_SIZE];
967 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
968 udev->symlink_final = 1;
969 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
970 info("reset symlink list");
971 name_list_cleanup(&udev->symlink_list);
973 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
974 udev_rules_apply_format(udev, temp, sizeof(temp));
975 count = replace_untrusted_chars(temp);
977 info("%i untrusted character(s) replaced" , count);
978 dbg("rule applied, added symlink(s) '%s'", temp);
980 /* add multiple symlinks separated by spaces */
982 while (isspace(pos[0]))
984 next = strchr(pos, ' ');
987 info("add symlink '%s'", pos);
988 name_list_add(&udev->symlink_list, pos, 0);
989 while (isspace(next[1]))
992 next = strchr(pos, ' ');
994 if (pos[0] != '\0') {
995 info("add symlink '%s'", pos);
996 name_list_add(&udev->symlink_list, pos, 0);
1000 /* set name, later rules with name set will be ignored */
1001 if (rule->name.operation != KEY_OP_UNSET) {
1005 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
1006 udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
1007 count = replace_untrusted_chars(udev->name);
1009 info("%i untrusted character(s) replaced", count);
1011 info("rule applied, '%s' becomes '%s'", udev->dev->kernel_name, udev->name);
1012 if (strcmp(udev->dev->subsystem, "net") != 0)
1013 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1014 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1017 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1018 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1019 udev->run_final = 1;
1020 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1021 info("reset run list");
1022 name_list_cleanup(&udev->run_list);
1024 dbg("add run '%s'", key_val(rule, &rule->run));
1025 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1028 if (rule->last_rule) {
1029 dbg("last rule to be applied");
1033 if (rule->goto_label.operation != KEY_OP_UNSET) {
1034 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1035 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
1041 strlcpy(udev->name, udev->dev->kernel_name, sizeof(udev->name));
1042 info("no node name set, will use kernel name '%s'", udev->name);
1045 if (udev->tmp_node[0] != '\0') {
1046 dbg("removing temporary device node");
1047 unlink_secure(udev->tmp_node);
1048 udev->tmp_node[0] = '\0';
1054 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
1056 struct udev_rule *rule;
1058 dbg("udev->kernel_name='%s'", udev->dev->kernel_name);
1060 /* look for a matching rule to apply */
1061 udev_rules_iter_init(rules);
1063 rule = udev_rules_iter_next(rules);
1067 dbg("process rule");
1068 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
1069 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
1070 dbg("skip rule that names a device");
1074 if (match_rule(udev, rule) == 0) {
1075 if (rule->ignore_device) {
1076 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
1077 udev->ignore_device = 1;
1081 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1082 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1083 info("reset run list");
1084 name_list_cleanup(&udev->run_list);
1086 dbg("add run '%s'", key_val(rule, &rule->run));
1087 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1088 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1092 if (rule->last_rule) {
1093 dbg("last rule to be applied");
1097 if (rule->goto_label.operation != KEY_OP_UNSET) {
1098 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1099 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));