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 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;
296 err("%%e is deprecated, will be removed and is unlikely to work correctly. Don't use it.");
300 /* check if the device already owns a matching name */
301 udev_db = udev_device_init();
304 if (udev_db_get_device(udev_db, devpath) == 0) {
305 struct name_entry *name_loop;
308 devnum = match_name_and_get_number(base, udev_db->name);
311 dbg("device '%s', already has the node '%s' with num %u, use it", devpath, base, num);
314 list_for_each_entry(name_loop, &udev_db->symlink_list, node) {
315 devnum = match_name_and_get_number(base, name_loop->name);
318 dbg("device '%s', already has a symlink '%s' with num %u, use it", devpath, base, num);
324 /* just search the database again and again until a free name is found */
325 strlcpy(filename, base, sizeof(filename));
327 dbg("look for existing node '%s'", filename);
328 if (udev_db_lookup_name(filename, db_devpath, sizeof(db_devpath)) != 0) {
329 dbg("free num=%d", num);
335 err("find_free_number aborted at num=%d", num);
339 snprintf(filename, sizeof(filename), "%s%d", base, num);
340 filename[sizeof(filename)-1] = '\0';
344 udev_device_cleanup(udev_db);
348 #define WAIT_LOOP_PER_SECOND 50
349 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
351 char devicepath[PATH_SIZE];
352 char filepath[PATH_SIZE];
354 int loop = timeout * WAIT_LOOP_PER_SECOND;
356 strlcpy(devicepath, sysfs_path, sizeof(devicepath));
357 strlcat(devicepath, udev->dev->devpath, sizeof(devicepath));
358 strlcpy(filepath, devicepath, sizeof(filepath));
359 strlcat(filepath, "/", sizeof(filepath));
360 strlcat(filepath, file, sizeof(filepath));
362 dbg("will wait %i sec for '%s'", timeout, filepath);
365 if (stat(filepath, &stats) == 0) {
366 info("file '%s' appeared after %i loops", filepath, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
369 /* make sure the device does not have disappeared in the meantime */
370 if (stat(devicepath, &stats) != 0) {
371 info("device disappeared while waiting for '%s'", filepath);
374 info("wait for '%s' for %i mseconds", filepath, 1000 / WAIT_LOOP_PER_SECOND);
375 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
377 err("waiting for '%s' failed", filepath);
381 void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
383 char temp[PATH_SIZE];
384 char temp2[PATH_SIZE];
385 char *head, *tail, *pos, *cpos, *attr, *rest;
389 unsigned int next_free_number;
407 static const struct subst_map {
410 enum subst_type type;
412 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
413 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
414 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
415 { .name = "id", .fmt = 'b', .type = SUBST_ID },
416 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
417 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
418 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
419 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
420 { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
421 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
422 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
423 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
424 { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
425 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
428 enum subst_type type;
429 const struct subst_map *subst;
434 while (head[0] != '\0') {
435 if (head[0] == '$') {
436 /* substitute named variable */
439 if (head[1] == '$') {
440 strlcpy(temp, head+2, sizeof(temp));
441 strlcpy(head+1, temp, maxsize);
446 for (subst = map; subst->name; subst++) {
447 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
449 tail = head + strlen(subst->name)+1;
450 dbg("will substitute format name '%s'", subst->name);
454 } else if (head[0] == '%') {
455 /* substitute format char */
458 if (head[1] == '%') {
459 strlcpy(temp, head+2, sizeof(temp));
460 strlcpy(head+1, temp, maxsize);
466 len = get_format_len(&tail);
467 for (subst = map; subst->name; subst++) {
468 if (tail[0] == subst->fmt) {
471 dbg("will substitute format char '%c'", subst->fmt);
480 attr = get_format_attribute(&tail);
481 strlcpy(temp, tail, sizeof(temp));
482 dbg("format=%i, string='%s', tail='%s'", type ,string, tail);
486 strlcat(string, udev->dev->devpath, maxsize);
487 dbg("substitute devpath '%s'", udev->dev->devpath);
489 case SUBST_KERNEL_NAME:
490 strlcat(string, udev->dev->kernel_name, maxsize);
491 dbg("substitute kernel name '%s'", udev->dev->kernel_name);
493 case SUBST_KERNEL_NUMBER:
494 strlcat(string, udev->dev->kernel_number, maxsize);
495 dbg("substitute kernel number '%s'", udev->dev->kernel_number);
498 if (udev->dev_parent != NULL) {
499 strlcat(string, udev->dev_parent->kernel_name, maxsize);
500 dbg("substitute id '%s'", udev->dev_parent->kernel_name);
504 sprintf(temp2, "%d", major(udev->devt));
505 strlcat(string, temp2, maxsize);
506 dbg("substitute major number '%s'", temp2);
509 sprintf(temp2, "%d", minor(udev->devt));
510 strlcat(string, temp2, maxsize);
511 dbg("substitute minor number '%s'", temp2);
514 if (udev->program_result[0] == '\0')
516 /* get part part of the result string */
519 i = strtoul(attr, &rest, 10);
521 dbg("request part #%d of result string", i);
522 cpos = udev->program_result;
524 while (cpos[0] != '\0' && !isspace(cpos[0]))
526 while (isspace(cpos[0]))
530 err("requested part of result string not found");
533 strlcpy(temp2, cpos, sizeof(temp2));
534 /* %{2+}c copies the whole string from the second part on */
535 if (rest[0] != '+') {
536 cpos = strchr(temp2, ' ');
540 strlcat(string, temp2, maxsize);
541 dbg("substitute part of result string '%s'", temp2);
543 strlcat(string, udev->program_result, maxsize);
544 dbg("substitute result string '%s'", udev->program_result);
549 dbg("missing attribute");
552 struct sysfs_device *dev_parent;
555 dev_parent = udev->dev;
557 dbg("looking at '%s'", dev_parent->devpath);
558 value = sysfs_attr_get_value(dev_parent->devpath, attr);
560 strlcpy(temp2, value, sizeof(temp2));
563 dev_parent = sysfs_device_get_parent(dev_parent);
564 } while (dev_parent != NULL);
566 /* strip trailing whitespace of sysfs value */
568 while (i > 0 && isspace(temp2[i-1]))
570 count = replace_untrusted_chars(temp2);
572 info("%i untrusted character(s) replaced" , count);
573 strlcat(string, temp2, maxsize);
574 dbg("substitute sysfs value '%s'", temp2);
578 next_free_number = find_free_number(string, udev->dev->devpath);
579 if (next_free_number > 0) {
580 sprintf(temp2, "%d", next_free_number);
581 strlcat(string, temp2, maxsize);
586 struct sysfs_device *dev_parent;
588 dev_parent = sysfs_device_get_parent(udev->dev);
589 if (dev_parent != NULL) {
590 struct udevice *udev_parent;
592 dbg("found parent '%s', get the node name", dev_parent->devpath);
593 udev_parent = udev_device_init();
594 if (udev_parent != NULL) {
595 /* lookup the name in the udev_db with the DEVPATH of the parent */
596 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
597 strlcat(string, udev_parent->name, maxsize);
598 dbg("substitute parent node name'%s'", udev_parent->name);
600 dbg("parent not found in database");
601 udev_device_cleanup(udev_parent);
606 case SUBST_TEMP_NODE:
607 if (udev->tmp_node[0] == '\0') {
608 dbg("create temporary device node for callout");
609 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
610 udev_root, major(udev->devt), minor(udev->devt));
611 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
612 udev_node_mknod(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
614 strlcat(string, udev->tmp_node, maxsize);
615 dbg("substitute temporary device node name '%s'", udev->tmp_node);
618 strlcat(string, udev_root, maxsize);
619 dbg("substitute udev_root '%s'", udev_root);
627 err("$modalias is deprecated, use $env{MODALIAS} or "
628 "$sysfs{modalias} instead.");
632 value = sysfs_attr_get_value(udev->dev->devpath, "modalias");
634 strlcat(string, value, maxsize);
635 dbg("substitute MODALIAS '%s'", temp2);
641 dbg("missing attribute");
646 dbg("env '%s' not available", attr);
649 dbg("substitute env '%s=%s'", attr, pos);
650 strlcat(string, pos, maxsize);
653 err("unknown substitution type=%i", type);
656 /* possibly truncate to format-char specified length */
659 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
661 strlcat(string, temp, maxsize);
665 static char *key_val(struct udev_rule *rule, struct key *key)
667 return rule->buf + key->val_off;
670 static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
672 return rule->buf + pair->key_name_off;
675 static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
678 char value[PATH_SIZE];
682 if (key->operation != KEY_OP_MATCH &&
683 key->operation != KEY_OP_NOMATCH)
686 strlcpy(value, rule->buf + key->val_off, sizeof(value));
689 dbg("key %s value='%s'", key_name, key_value);
691 pos = strchr(key_value, '|');
696 dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
697 match = (strcmp_pattern(key_value, val) == 0);
698 if (match && (key->operation != KEY_OP_NOMATCH)) {
699 dbg("%s is true (matching value)", key_name);
702 if (!match && (key->operation == KEY_OP_NOMATCH)) {
703 dbg("%s is true (non-matching value)", key_name);
708 dbg("%s is false", key_name);
712 /* match a single rule against a given device and possibly its parent devices */
713 static int match_rule(struct udevice *udev, struct udev_rule *rule)
717 if (match_key("ACTION", rule, &rule->action, udev->action))
720 if (match_key("KERNEL", rule, &rule->kernel_name, udev->dev->kernel_name))
723 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
726 if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
729 /* compare NAME against a previously assigned value */
730 if (match_key("NAME", rule, &rule->name, udev->name))
733 if (rule->modalias.operation != KEY_OP_UNSET) {
738 err("MODALIAS is deprecated, use ENV{MODALIAS} or SYSFS{modalias} instead.");
742 value = sysfs_attr_get_value(udev->dev->devpath, "modalias");
744 dbg("MODALIAS value not found");
747 if (match_key("MODALIAS", rule, &rule->modalias, value))
751 for (i = 0; i < rule->env.count; i++) {
752 struct key_pair *pair = &rule->env.keys[i];
754 /* we only check for matches, assignments will be handled later */
755 if (pair->key.operation == KEY_OP_MATCH ||
756 pair->key.operation == KEY_OP_NOMATCH) {
757 const char *key_name = key_pair_name(rule, pair);
758 const char *value = getenv(key_name);
761 dbg("ENV{'%s'} is not set, treat as empty", key_name);
764 if (match_key("ENV", rule, &pair->key, value))
769 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
772 found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
773 if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
774 dbg("WAIT_FOR_SYSFS failed");
779 /* walk up the chain of parent devices and find a match */
780 udev->dev_parent = udev->dev;
782 /* check for matching driver */
783 if (match_key("DRIVER", rule, &rule->driver, udev->dev_parent->driver))
786 /* check for matching subsystem/bus value */
787 if (match_key("BUS", rule, &rule->bus, udev->dev_parent->subsystem))
790 /* check for matching bus id (device name) */
791 if (match_key("ID", rule, &rule->id, udev->dev_parent->kernel_name))
794 /* check for matching sysfs pairs */
795 if (rule->sysfs.count) {
796 dbg("check %i SYSFS keys", rule->sysfs.count);
797 for (i = 0; i < rule->sysfs.count; i++) {
798 struct key_pair *pair = &rule->sysfs.keys[i];
799 const char *key_name = key_pair_name(rule, pair);
800 const char *key_value = key_val(rule, &pair->key);
802 char val[VALUE_SIZE];
805 value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
807 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
810 strlcpy(val, value, sizeof(val));
812 /* strip trailing whitespace of value, if not asked to match for it */
813 len = strlen(key_value);
814 if (len > 0 && !isspace(key_value[len-1])) {
816 while (len > 0 && isspace(val[len-1]))
818 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
821 if (match_key("SYSFS", rule, &pair->key, val))
824 dbg("all %i SYSFS keys matched", rule->sysfs.count);
827 /* found matching device */
830 /* move to parent device */
831 dbg("try parent sysfs device");
832 udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
833 if (udev->dev_parent == NULL)
835 dbg("looking at dev_parent->devpath='%s'", udev->dev_parent->devpath);
836 dbg("looking at dev_parent->bus_kernel_name='%s'", udev->dev_parent->kernel_name);
839 /* execute external program */
840 if (rule->program.operation != KEY_OP_UNSET) {
841 char program[PATH_SIZE];
842 char result[PATH_SIZE];
844 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
845 udev_rules_apply_format(udev, program, sizeof(program));
846 if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
847 dbg("PROGRAM is false");
848 udev->program_result[0] = '\0';
849 if (rule->program.operation != KEY_OP_NOMATCH)
854 dbg("PROGRAM matches");
855 remove_trailing_chars(result, '\n');
856 count = replace_untrusted_chars(result);
858 info("%i untrusted character(s) replaced" , count);
859 dbg("result is '%s'", result);
860 strlcpy(udev->program_result, result, sizeof(udev->program_result));
861 dbg("PROGRAM returned successful");
862 if (rule->program.operation == KEY_OP_NOMATCH)
865 dbg("PROGRAM key is true");
868 /* check for matching result of external program */
869 if (match_key("RESULT", rule, &rule->result, udev->program_result))
872 /* import variables returned from program or or file into environment */
873 if (rule->import.operation != KEY_OP_UNSET) {
874 char import[PATH_SIZE];
877 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
878 udev_rules_apply_format(udev, import, sizeof(import));
879 dbg("check for IMPORT import='%s'", import);
880 if (rule->import_type == IMPORT_PROGRAM) {
881 rc = import_program_into_env(udev, import);
882 } else if (rule->import_type == IMPORT_FILE) {
883 dbg("import file import='%s'", import);
884 rc = import_file_into_env(udev, import);
885 } else if (rule->import_type == IMPORT_PARENT) {
886 dbg("import parent import='%s'", import);
887 rc = import_parent_into_env(udev, import);
890 dbg("IMPORT failed");
891 if (rule->import.operation != KEY_OP_NOMATCH)
894 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
895 dbg("IMPORT key is true");
898 /* rule matches, if we have ENV assignments export it */
899 for (i = 0; i < rule->env.count; i++) {
900 struct key_pair *pair = &rule->env.keys[i];
902 if (pair->key.operation == KEY_OP_ASSIGN) {
903 const char *key_name = key_pair_name(rule, pair);
904 const char *value = key_val(rule, &pair->key);
905 char *key_value = name_list_key_add(&udev->env_list, key_name, value);
906 if (key_value == NULL)
909 udev_rules_apply_format(udev, key_value, NAME_SIZE);
911 dbg("export ENV '%s'", key_value);
921 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
923 struct udev_rule *rule;
926 dbg("udev->dev->devpath='%s'", udev->dev->devpath);
927 dbg("udev->dev->kernel_name='%s'", udev->dev->kernel_name);
929 /* look for a matching rule to apply */
930 udev_rules_iter_init(rules);
932 rule = udev_rules_iter_next(rules);
937 (rule->name.operation == KEY_OP_ASSIGN ||
938 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
939 rule->name.operation == KEY_OP_ADD)) {
940 dbg("node name already set, rule ignored");
945 if (match_rule(udev, rule) == 0) {
947 if (rule->ignore_device) {
948 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
949 udev->ignore_device = 1;
952 if (rule->ignore_remove) {
953 udev->ignore_remove = 1;
954 dbg("remove event should be ignored");
956 /* apply all_partitions option only at a main block device */
957 if (rule->partitions &&
958 strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
959 udev->partitions = rule->partitions;
960 dbg("creation of partition nodes requested");
963 /* apply permissions */
964 if (!udev->mode_final && rule->mode != 0000) {
965 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
966 udev->mode_final = 1;
967 udev->mode = rule->mode;
968 dbg("applied mode=%#o to '%s'", rule->mode, udev->dev->kernel_name);
970 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
971 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
972 udev->owner_final = 1;
973 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
974 udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
975 dbg("applied owner='%s' to '%s'", udev->owner, udev->dev->kernel_name);
977 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
978 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
979 udev->group_final = 1;
980 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
981 udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
982 dbg("applied group='%s' to '%s'", udev->group, udev->dev->kernel_name);
985 /* collect symlinks */
986 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
987 char temp[PATH_SIZE];
991 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
992 udev->symlink_final = 1;
993 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
994 info("reset symlink list");
995 name_list_cleanup(&udev->symlink_list);
997 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
998 udev_rules_apply_format(udev, temp, sizeof(temp));
999 count = replace_untrusted_chars(temp);
1001 info("%i untrusted character(s) replaced" , count);
1002 dbg("rule applied, added symlink(s) '%s'", temp);
1004 /* add multiple symlinks separated by spaces */
1006 while (isspace(pos[0]))
1008 next = strchr(pos, ' ');
1011 info("add symlink '%s'", pos);
1012 name_list_add(&udev->symlink_list, pos, 0);
1013 while (isspace(next[1]))
1016 next = strchr(pos, ' ');
1018 if (pos[0] != '\0') {
1019 info("add symlink '%s'", pos);
1020 name_list_add(&udev->symlink_list, pos, 0);
1024 /* set name, later rules with name set will be ignored */
1025 if (rule->name.operation == KEY_OP_ASSIGN ||
1026 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
1027 rule->name.operation == KEY_OP_ADD) {
1031 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
1032 udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
1033 count = replace_untrusted_chars(udev->name);
1035 info("%i untrusted character(s) replaced", count);
1037 info("rule applied, '%s' becomes '%s'", udev->dev->kernel_name, udev->name);
1038 if (strcmp(udev->dev->subsystem, "net") != 0)
1039 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1040 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1043 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1044 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1045 udev->run_final = 1;
1046 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1047 info("reset run list");
1048 name_list_cleanup(&udev->run_list);
1050 dbg("add run '%s'", key_val(rule, &rule->run));
1051 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1054 if (rule->last_rule) {
1055 dbg("last rule to be applied");
1059 if (rule->goto_label.operation != KEY_OP_UNSET) {
1060 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1061 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
1067 strlcpy(udev->name, udev->dev->kernel_name, sizeof(udev->name));
1068 info("no node name set, will use kernel name '%s'", udev->name);
1071 if (udev->tmp_node[0] != '\0') {
1072 dbg("removing temporary device node");
1073 unlink_secure(udev->tmp_node);
1074 udev->tmp_node[0] = '\0';
1080 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
1082 struct udev_rule *rule;
1084 dbg("udev->kernel_name='%s'", udev->dev->kernel_name);
1086 /* look for a matching rule to apply */
1087 udev_rules_iter_init(rules);
1089 rule = udev_rules_iter_next(rules);
1093 dbg("process rule");
1094 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
1095 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
1096 dbg("skip rule that names a device");
1100 if (match_rule(udev, rule) == 0) {
1101 if (rule->ignore_device) {
1102 info("rule applied, '%s' is ignored", udev->dev->kernel_name);
1103 udev->ignore_device = 1;
1107 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1108 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1109 info("reset run list");
1110 name_list_cleanup(&udev->run_list);
1112 dbg("add run '%s'", key_val(rule, &rule->run));
1113 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1114 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1118 if (rule->last_rule) {
1119 dbg("last rule to be applied");
1123 if (rule->goto_label.operation != KEY_OP_UNSET) {
1124 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1125 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));