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)
86 while (isspace(linepos[0]))
93 if (linepos[0] == '\0')
95 if (isspace(linepos[0]))
97 if (linepos[0] == '=')
105 /* skip whitespace */
106 while (isspace(linepos[0]))
110 if (linepos[0] == '"') {
112 temp = strchr(linepos, '"');
114 dbg("missing closing quote");
117 dbg("value is quoted");
119 } else if (linepos[0] == '\'') {
121 temp = strchr(linepos, '\'');
123 dbg("missing closing quote");
126 dbg("value is quoted");
128 } else if (linepos[0] == '\0') {
129 dbg("value is empty");
132 while (temp[0] && !isspace(temp[0]))
141 static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
143 char line[LINE_SIZE];
152 /* loop through the whole buffer */
155 while (cur < bufsize) {
156 count = buf_get_line(buf, bufsize, cur);
161 if (count >= sizeof(line)) {
162 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
166 /* eat the whitespace */
167 while ((count > 0) && isspace(bufline[0])) {
174 /* see if this is a comment */
175 if (bufline[0] == COMMENT_CHARACTER)
178 memcpy(line, bufline, count);
182 if (get_key(&linepos, &variable, &value) == 0) {
183 dbg("import '%s=%s'", variable, value);
185 /* handle device, renamed by external tool, returning new path */
186 if (strcmp(variable, "DEVPATH") == 0) {
187 info("updating devpath from '%s' to '%s'", udev->dev->devpath, value);
188 sysfs_device_set_values(udev->dev, value, NULL, NULL);
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(NULL);
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 (fnmatch(filter, name, 0) == 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 did not disappear 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 },
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 = "attr", .fmt = 's', .type = SUBST_ATTR },
335 { .name = "sysfs", .fmt = 's', .type = SUBST_ATTR },
336 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
337 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
338 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
339 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
342 enum subst_type type;
343 const struct subst_map *subst;
348 while (head[0] != '\0') {
349 if (head[0] == '$') {
350 /* substitute named variable */
353 if (head[1] == '$') {
354 strlcpy(temp, head+2, sizeof(temp));
355 strlcpy(head+1, temp, maxsize);
360 for (subst = map; subst->name; subst++) {
361 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
363 tail = head + strlen(subst->name)+1;
364 dbg("will substitute format name '%s'", subst->name);
369 err("unknown format variable '%s'", head);
370 } else if (head[0] == '%') {
371 /* substitute format char */
374 if (head[1] == '%') {
375 strlcpy(temp, head+2, sizeof(temp));
376 strlcpy(head+1, temp, maxsize);
382 len = get_format_len(&tail);
383 for (subst = map; subst->name; subst++) {
384 if (tail[0] == subst->fmt) {
387 dbg("will substitute format char '%c'", subst->fmt);
392 err("unknown format char '%c'", tail[0]);
398 attr = get_format_attribute(&tail);
399 strlcpy(temp, tail, sizeof(temp));
400 dbg("format=%i, string='%s', tail='%s'", type ,string, tail);
404 strlcat(string, udev->dev->devpath, maxsize);
405 dbg("substitute devpath '%s'", udev->dev->devpath);
408 strlcat(string, udev->dev->kernel, maxsize);
409 dbg("substitute kernel name '%s'", udev->dev->kernel);
411 case SUBST_KERNEL_NUMBER:
412 strlcat(string, udev->dev->kernel_number, maxsize);
413 dbg("substitute kernel number '%s'", udev->dev->kernel_number);
416 if (udev->dev_parent != NULL) {
417 strlcat(string, udev->dev_parent->kernel, maxsize);
418 dbg("substitute id '%s'", udev->dev_parent->kernel);
422 sprintf(temp2, "%d", major(udev->devt));
423 strlcat(string, temp2, maxsize);
424 dbg("substitute major number '%s'", temp2);
427 sprintf(temp2, "%d", minor(udev->devt));
428 strlcat(string, temp2, maxsize);
429 dbg("substitute minor number '%s'", temp2);
432 if (udev->program_result[0] == '\0')
434 /* get part part of the result string */
437 i = strtoul(attr, &rest, 10);
439 dbg("request part #%d of result string", i);
440 cpos = udev->program_result;
442 while (cpos[0] != '\0' && !isspace(cpos[0]))
444 while (isspace(cpos[0]))
448 err("requested part of result string not found");
451 strlcpy(temp2, cpos, sizeof(temp2));
452 /* %{2+}c copies the whole string from the second part on */
453 if (rest[0] != '+') {
454 cpos = strchr(temp2, ' ');
458 strlcat(string, temp2, maxsize);
459 dbg("substitute part of result string '%s'", temp2);
461 strlcat(string, udev->program_result, maxsize);
462 dbg("substitute result string '%s'", udev->program_result);
467 err("missing file parameter for attr");
469 const char *value = NULL;
472 /* first try the current device, other matches may have selected */
473 if (udev->dev_parent != NULL && udev->dev_parent != udev->dev)
474 value = sysfs_attr_get_value(udev->dev_parent->devpath, attr);
476 /* look at all devices along the chain of parents */
478 struct sysfs_device *dev_parent = udev->dev;
481 dbg("looking at '%s'", dev_parent->devpath);
482 value = sysfs_attr_get_value(dev_parent->devpath, attr);
484 strlcpy(temp2, value, sizeof(temp2));
487 dev_parent = sysfs_device_get_parent(dev_parent);
488 } while (dev_parent != NULL);
494 /* strip trailing whitespace, and replace unwanted characters */
495 size = strlcpy(temp2, value, sizeof(temp2));
496 if (size >= sizeof(temp2))
497 size = sizeof(temp2)-1;
498 while (size > 0 && isspace(temp2[size-1]))
499 temp2[--size] = '\0';
500 count = replace_chars(temp2, ALLOWED_CHARS_INPUT);
502 info("%i character(s) replaced" , count);
503 strlcat(string, temp2, maxsize);
504 dbg("substitute sysfs value '%s'", temp2);
509 struct sysfs_device *dev_parent;
511 dev_parent = sysfs_device_get_parent(udev->dev);
512 if (dev_parent != NULL) {
513 struct udevice *udev_parent;
515 dbg("found parent '%s', get the node name", dev_parent->devpath);
516 udev_parent = udev_device_init(NULL);
517 if (udev_parent != NULL) {
518 /* lookup the name in the udev_db with the DEVPATH of the parent */
519 if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
520 strlcat(string, udev_parent->name, maxsize);
521 dbg("substitute parent node name'%s'", udev_parent->name);
523 dbg("parent not found in database");
524 udev_device_cleanup(udev_parent);
529 case SUBST_TEMP_NODE:
530 if (udev->tmp_node[0] == '\0' && major(udev->devt) > 0) {
531 dbg("create temporary device node for callout");
532 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
533 udev_root, major(udev->devt), minor(udev->devt));
534 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
535 udev_node_mknod(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
537 strlcat(string, udev->tmp_node, maxsize);
538 dbg("substitute temporary device node name '%s'", udev->tmp_node);
541 strlcat(string, udev_root, maxsize);
542 dbg("substitute udev_root '%s'", udev_root);
546 dbg("missing attribute");
551 dbg("env '%s' not available", attr);
554 dbg("substitute env '%s=%s'", attr, pos);
555 strlcat(string, pos, maxsize);
558 err("unknown substitution type=%i", type);
561 /* possibly truncate to format-char specified length */
562 if (len >= 0 && len < (int)strlen(head)) {
564 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
566 strlcat(string, temp, maxsize);
570 static char *key_val(struct udev_rule *rule, struct key *key)
572 return rule->buf + key->val_off;
575 static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
577 return rule->buf + pair->key_name_off;
580 static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
582 char value[PATH_SIZE];
587 if (key->operation != KEY_OP_MATCH &&
588 key->operation != KEY_OP_NOMATCH)
591 /* look for a matching string, parts are separated by '|' */
592 strlcpy(value, rule->buf + key->val_off, sizeof(value));
594 dbg("key %s value='%s'", key_name, key_value);
596 pos = strchr(key_value, '|');
602 dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
603 match = (fnmatch(key_value, val, 0) == 0);
610 if (match && (key->operation == KEY_OP_MATCH)) {
611 dbg("%s is true (matching value)", key_name);
614 if (!match && (key->operation == KEY_OP_NOMATCH)) {
615 dbg("%s is true (non-matching value)", key_name);
621 /* match a single rule against a given device and possibly its parent devices */
622 static int match_rule(struct udevice *udev, struct udev_rule *rule)
626 if (match_key("ACTION", rule, &rule->action, udev->action))
629 if (match_key("KERNEL", rule, &rule->kernel, udev->dev->kernel))
632 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
635 if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
638 if (match_key("DRIVER", rule, &rule->driver, udev->dev->driver))
641 /* match NAME against a value assigned by an earlier rule */
642 if (match_key("NAME", rule, &rule->name, udev->name))
645 for (i = 0; i < rule->env.count; i++) {
646 struct key_pair *pair = &rule->env.keys[i];
648 /* we only check for matches, assignments will be handled later */
649 if (pair->key.operation == KEY_OP_MATCH ||
650 pair->key.operation == KEY_OP_NOMATCH) {
651 const char *key_name = key_pair_name(rule, pair);
652 const char *value = getenv(key_name);
655 dbg("ENV{'%s'} is not set, treat as empty", key_name);
658 if (match_key("ENV", rule, &pair->key, value))
663 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
666 found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
667 if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH))
671 /* check for matching sysfs attribute pairs */
672 for (i = 0; i < rule->attr.count; i++) {
673 struct key_pair *pair = &rule->attr.keys[i];
675 if (pair->key.operation == KEY_OP_MATCH ||
676 pair->key.operation == KEY_OP_NOMATCH) {
677 const char *key_name = key_pair_name(rule, pair);
678 const char *key_value = key_val(rule, &pair->key);
680 char val[VALUE_SIZE];
683 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
686 strlcpy(val, value, sizeof(val));
688 /* strip trailing whitespace of value, if not asked to match for it */
689 len = strlen(key_value);
690 if (len > 0 && !isspace(key_value[len-1])) {
692 while (len > 0 && isspace(val[len-1]))
694 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
697 if (match_key("ATTR", rule, &pair->key, val))
702 /* walk up the chain of parent devices and find a match */
703 udev->dev_parent = udev->dev;
705 /* check for matching kernel device name */
706 if (match_key("KERNELS", rule, &rule->kernels, udev->dev_parent->kernel))
709 /* check for matching subsystem value */
710 if (match_key("SUBSYSTEMS", rule, &rule->subsystems, udev->dev_parent->subsystem))
713 /* check for matching driver */
714 if (match_key("DRIVERS", rule, &rule->drivers, udev->dev_parent->driver))
717 /* check for matching sysfs attribute pairs */
718 for (i = 0; i < rule->attrs.count; i++) {
719 struct key_pair *pair = &rule->attrs.keys[i];
721 if (pair->key.operation == KEY_OP_MATCH ||
722 pair->key.operation == KEY_OP_NOMATCH) {
723 const char *key_name = key_pair_name(rule, pair);
724 const char *key_value = key_val(rule, &pair->key);
726 char val[VALUE_SIZE];
729 value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
731 value = sysfs_attr_get_value(udev->dev->devpath, key_name);
734 strlcpy(val, value, sizeof(val));
736 /* strip trailing whitespace of value, if not asked to match for it */
737 len = strlen(key_value);
738 if (len > 0 && !isspace(key_value[len-1])) {
740 while (len > 0 && isspace(val[len-1]))
742 dbg("removed %zi trailing whitespace chars from '%s'", strlen(val)-len, val);
745 if (match_key("ATTRS", rule, &pair->key, val))
750 /* found matching device */
753 /* move to parent device */
754 dbg("try parent sysfs device");
755 udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
756 if (udev->dev_parent == NULL)
758 dbg("looking at dev_parent->devpath='%s'", udev->dev_parent->devpath);
759 dbg("looking at dev_parent->kernel='%s'", udev->dev_parent->kernel);
762 /* execute external program */
763 if (rule->program.operation != KEY_OP_UNSET) {
764 char program[PATH_SIZE];
765 char result[PATH_SIZE];
767 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
768 udev_rules_apply_format(udev, program, sizeof(program));
769 if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
770 dbg("PROGRAM is false");
771 udev->program_result[0] = '\0';
772 if (rule->program.operation != KEY_OP_NOMATCH)
777 dbg("PROGRAM matches");
778 remove_trailing_chars(result, '\n');
779 count = replace_chars(result, ALLOWED_CHARS_INPUT);
781 info("%i character(s) replaced" , count);
782 dbg("result is '%s'", result);
783 strlcpy(udev->program_result, result, sizeof(udev->program_result));
784 dbg("PROGRAM returned successful");
785 if (rule->program.operation == KEY_OP_NOMATCH)
788 dbg("PROGRAM key is true");
791 /* check for matching result of external program */
792 if (match_key("RESULT", rule, &rule->result, udev->program_result))
795 /* import variables returned from program or or file into environment */
796 if (rule->import.operation != KEY_OP_UNSET) {
797 char import[PATH_SIZE];
800 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
801 udev_rules_apply_format(udev, import, sizeof(import));
802 dbg("check for IMPORT import='%s'", import);
803 if (rule->import_type == IMPORT_PROGRAM) {
804 rc = import_program_into_env(udev, import);
805 } else if (rule->import_type == IMPORT_FILE) {
806 dbg("import file import='%s'", import);
807 rc = import_file_into_env(udev, import);
808 } else if (rule->import_type == IMPORT_PARENT) {
809 dbg("import parent import='%s'", import);
810 rc = import_parent_into_env(udev, import);
813 dbg("IMPORT failed");
814 if (rule->import.operation != KEY_OP_NOMATCH)
817 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
818 dbg("IMPORT key is true");
821 /* rule matches, if we have ENV assignments export it */
822 for (i = 0; i < rule->env.count; i++) {
823 struct key_pair *pair = &rule->env.keys[i];
825 if (pair->key.operation == KEY_OP_ASSIGN) {
826 char temp_value[NAME_SIZE];
827 const char *key_name = key_pair_name(rule, pair);
828 const char *value = key_val(rule, &pair->key);
830 /* make sure we don't write to the same string we possibly read from */
831 strlcpy(temp_value, value, sizeof(temp_value));
832 udev_rules_apply_format(udev, temp_value, NAME_SIZE);
834 if (temp_value[0] == '\0') {
835 name_list_key_remove(&udev->env_list, key_name);
837 info("unset ENV '%s'", key_name);
839 char *key_value = name_list_key_add(&udev->env_list, key_name, temp_value);
841 if (key_value == NULL)
844 info("set ENV '%s'", key_value);
849 /* if we have ATTR assignments, write value to sysfs file */
850 for (i = 0; i < rule->attr.count; i++) {
851 struct key_pair *pair = &rule->attr.keys[i];
853 if (pair->key.operation == KEY_OP_ASSIGN) {
854 const char *key_name = key_pair_name(rule, pair);
855 char attr[PATH_SIZE];
856 char value[NAME_SIZE];
859 strlcpy(attr, sysfs_path, sizeof(attr));
860 strlcat(attr, udev->dev->devpath, sizeof(attr));
861 strlcat(attr, "/", sizeof(attr));
862 strlcat(attr, key_name, sizeof(attr));
863 strlcpy(value, key_val(rule, &pair->key), sizeof(value));
864 udev_rules_apply_format(udev, value, sizeof(value));
865 info("writing '%s' to sysfs file '%s'", value, attr);
866 f = fopen(attr, "w");
869 if (fprintf(f, "%s", value) <= 0)
870 err("error writing ATTR{%s}: %s", attr, strerror(errno));
873 err("error opening ATTR{%s} for writing: %s", attr, strerror(errno));
882 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
884 struct udev_rule *rule;
887 dbg("udev->dev->devpath='%s'", udev->dev->devpath);
888 dbg("udev->dev->kernel='%s'", udev->dev->kernel);
890 /* look for a matching rule to apply */
891 udev_rules_iter_init(rules);
893 rule = udev_rules_iter_next(rules);
898 (rule->name.operation == KEY_OP_ASSIGN ||
899 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
900 rule->name.operation == KEY_OP_ADD)) {
901 dbg("node name already set, rule ignored");
906 if (match_rule(udev, rule) == 0) {
908 if (rule->ignore_device) {
909 info("rule applied, '%s' is ignored", udev->dev->kernel);
910 udev->ignore_device = 1;
913 if (rule->ignore_remove) {
914 udev->ignore_remove = 1;
915 dbg("remove event should be ignored");
917 if (rule->link_priority != 0) {
918 udev->link_priority = rule->link_priority;
919 info("link_priority=%i", udev->link_priority);
921 /* apply all_partitions option only at a main block device */
922 if (rule->partitions &&
923 strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
924 udev->partitions = rule->partitions;
925 dbg("creation of partition nodes requested");
928 /* apply permissions */
929 if (!udev->mode_final && rule->mode != 0000) {
930 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
931 udev->mode_final = 1;
932 udev->mode = rule->mode;
933 dbg("applied mode=%#o to '%s'", rule->mode, udev->dev->kernel);
935 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
936 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
937 udev->owner_final = 1;
938 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
939 udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
940 dbg("applied owner='%s' to '%s'", udev->owner, udev->dev->kernel);
942 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
943 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
944 udev->group_final = 1;
945 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
946 udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
947 dbg("applied group='%s' to '%s'", udev->group, udev->dev->kernel);
950 /* collect symlinks */
951 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
952 char temp[PATH_SIZE];
956 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
957 udev->symlink_final = 1;
958 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
959 info("reset symlink list");
960 name_list_cleanup(&udev->symlink_list);
962 /* allow multiple symlinks separated by spaces */
963 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
964 udev_rules_apply_format(udev, temp, sizeof(temp));
965 count = replace_chars(temp, ALLOWED_CHARS_FILE " ");
967 info("%i character(s) replaced" , count);
968 dbg("rule applied, added symlink(s) '%s'", temp);
970 while (isspace(pos[0]))
972 next = strchr(pos, ' ');
975 info("add symlink '%s'", pos);
976 name_list_add(&udev->symlink_list, pos, 0);
977 while (isspace(next[1]))
980 next = strchr(pos, ' ');
982 if (pos[0] != '\0') {
983 info("add symlink '%s'", pos);
984 name_list_add(&udev->symlink_list, pos, 0);
988 /* set name, later rules with name set will be ignored */
989 if (rule->name.operation == KEY_OP_ASSIGN ||
990 rule->name.operation == KEY_OP_ASSIGN_FINAL ||
991 rule->name.operation == KEY_OP_ADD) {
995 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
996 udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
997 count = replace_chars(udev->name, ALLOWED_CHARS_FILE);
999 info("%i character(s) replaced", count);
1001 info("rule applied, '%s' becomes '%s'", udev->dev->kernel, udev->name);
1002 if (strcmp(udev->dev->subsystem, "net") != 0)
1003 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1004 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1007 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1008 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1009 udev->run_final = 1;
1010 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1011 info("reset run list");
1012 name_list_cleanup(&udev->run_list);
1014 dbg("add run '%s'", key_val(rule, &rule->run));
1015 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1018 if (rule->last_rule) {
1019 dbg("last rule to be applied");
1023 if (rule->goto_label.operation != KEY_OP_UNSET) {
1024 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1025 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
1031 strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
1032 info("no node name set, will use kernel name '%s'", udev->name);
1035 if (udev->tmp_node[0] != '\0') {
1036 dbg("removing temporary device node");
1037 unlink_secure(udev->tmp_node);
1038 udev->tmp_node[0] = '\0';
1044 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
1046 struct udev_rule *rule;
1048 dbg("udev->kernel='%s'", udev->dev->kernel);
1050 /* look for a matching rule to apply */
1051 udev_rules_iter_init(rules);
1053 rule = udev_rules_iter_next(rules);
1057 dbg("process rule");
1058 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
1059 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
1060 dbg("skip rule that names a device");
1064 if (match_rule(udev, rule) == 0) {
1065 if (rule->ignore_device) {
1066 info("rule applied, '%s' is ignored", udev->dev->kernel);
1067 udev->ignore_device = 1;
1071 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1072 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1073 info("reset run list");
1074 name_list_cleanup(&udev->run_list);
1076 dbg("add run '%s'", key_val(rule, &rule->run));
1077 name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
1078 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1082 if (rule->last_rule) {
1083 dbg("last rule to be applied");
1087 if (rule->goto_label.operation != KEY_OP_UNSET) {
1088 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1089 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));