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.
34 #include "libsysfs/sysfs/libsysfs.h"
36 #include "udev_libc_wrapper.h"
38 #include "udev_utils.h"
39 #include "udev_version.h"
41 #include "udev_rules.h"
45 /* extract possible {attr} and move str behind it */
46 static char *get_format_attribute(char **str)
52 pos = strchr(*str, '}');
54 err("missing closing brace for format");
60 dbg("attribute='%s', str='%s'", attr, *str);
65 /* extract possible format length and move str behind it*/
66 static int get_format_len(char **str)
71 if (isdigit(*str[0])) {
72 num = (int) strtoul(*str, &tail, 10);
75 dbg("format length=%i", num);
78 err("format parsing error '%s'", *str);
84 static int get_key(char **line, char **key, char **value)
93 if (strchr(linepos, '\\')) {
94 dbg("escaped characters are not supported, skip");
99 while (isspace(linepos[0]))
106 if (linepos[0] == '\0')
108 if (isspace(linepos[0]))
110 if (linepos[0] == '=')
118 /* skip whitespace */
119 while (isspace(linepos[0]))
123 if (linepos[0] == '"') {
125 temp = strchr(linepos, '"');
127 dbg("missing closing quote");
130 dbg("value is quoted");
132 } else if (linepos[0] == '\'') {
134 temp = strchr(linepos, '\'');
136 dbg("missing closing quote");
139 dbg("value is quoted");
141 } else if (linepos[0] == '\0') {
142 dbg("value is empty");
145 while (temp[0] && !isspace(temp[0]))
154 static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
156 char line[LINE_SIZE];
165 /* loop through the whole buffer */
168 while (cur < bufsize) {
169 count = buf_get_line(buf, bufsize, cur);
174 if (count >= sizeof(line)) {
175 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
179 /* eat the whitespace */
180 while ((count > 0) && isspace(bufline[0])) {
187 /* see if this is a comment */
188 if (bufline[0] == COMMENT_CHARACTER)
191 memcpy(line, bufline, count);
195 if (get_key(&linepos, &variable, &value) == 0) {
196 dbg("import '%s=%s'", variable, value);
197 name_list_key_add(&udev->env_list, variable, value);
198 setenv(variable, value, 1);
205 static int import_file_into_env(struct udevice *udev, const char *filename)
210 if (file_map(filename, &buf, &bufsize) != 0) {
211 err("can't open '%s'", filename);
214 import_keys_into_env(udev, buf, bufsize);
215 file_unmap(buf, bufsize);
220 static int import_program_into_env(struct udevice *udev, const char *program)
225 if (run_program(program, udev->subsystem, result, sizeof(result), &reslen, (udev_log_priority >= LOG_INFO)) != 0)
227 return import_keys_into_env(udev, result, reslen);
230 static int import_parent_into_env(struct udevice *udev, struct sysfs_class_device *class_dev, const char *filter)
232 struct sysfs_class_device *parent = sysfs_get_classdev_parent(class_dev);
235 if (parent != NULL) {
236 struct udevice udev_parent;
237 struct name_entry *name_loop;
239 dbg("found parent '%s', get the node name", parent->path);
240 udev_init_device(&udev_parent, NULL, NULL, NULL);
241 /* import the udev_db of the parent */
242 if (udev_db_get_device(&udev_parent, &parent->path[strlen(sysfs_path)]) == 0) {
243 dbg("import stored parent env '%s'", udev_parent.name);
244 list_for_each_entry(name_loop, &udev_parent.env_list, node) {
245 char name[NAME_SIZE];
248 strlcpy(name, name_loop->name, sizeof(name));
249 pos = strchr(name, '=');
253 if (strcmp_pattern(filter, name) == 0) {
254 dbg("import key '%s'", name_loop->name);
255 name_list_add(&udev->env_list, name_loop->name, 0);
256 setenv(name, pos, 1);
258 dbg("skip key '%s'", name_loop->name);
263 dbg("parent not found in database");
264 udev_cleanup_device(&udev_parent);
270 /* finds the lowest positive N such that <name>N isn't present in the udevdb
271 * if <name> doesn't exist, 0 is returned, N otherwise
273 static int find_free_number(const char *name, const char *devpath)
275 char db_devpath[PATH_SIZE];
276 char filename[PATH_SIZE];
279 strlcpy(filename, name, sizeof(filename));
281 dbg("look for existing node '%s'", filename);
282 if (udev_db_search_name(filename, db_devpath, sizeof(db_devpath)) != 0) {
283 dbg("free num=%d", num);
289 err("find_free_number aborted at num=%d", num);
293 snprintf(filename, sizeof(filename), "%s%d", name, num);
294 filename[sizeof(filename)-1] = '\0';
300 static int find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device,
301 const char *name, char *value, size_t len)
303 struct sysfs_class_device *class_dev_parent;
304 struct sysfs_attribute *tmpattr;
306 dbg("look for device attribute '%s'", name);
308 dbg("look for class attribute '%s/%s'", class_dev->path, name);
309 tmpattr = sysfs_get_classdev_attr(class_dev, name);
312 class_dev_parent = sysfs_get_classdev_parent(class_dev);
313 if (class_dev_parent) {
314 tmpattr = sysfs_get_classdev_attr(class_dev_parent, name);
320 dbg("look for devices attribute '%s/%s'", sysfs_device->path, name);
321 tmpattr = sysfs_get_device_attr(sysfs_device, name);
328 strlcpy(value, tmpattr->value, len);
329 remove_trailing_char(value, '\n');
331 dbg("found attribute '%s'", tmpattr->path);
335 #define WAIT_LOOP_PER_SECOND 20
336 static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
338 char filename[PATH_SIZE];
340 int loop = timeout * WAIT_LOOP_PER_SECOND;
342 snprintf(filename, sizeof(filename), "%s%s/%s", sysfs_path, udev->devpath, file);
343 filename[sizeof(filename)-1] = '\0';
344 dbg("wait %i sec for '%s'", timeout, filename);
347 if (stat(filename, &stats) == 0) {
348 dbg("file appeared after %i loops", (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
351 usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
353 dbg("waiting for '%s' failed", filename);
357 static void apply_format(struct udevice *udev, char *string, size_t maxsize,
358 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
360 char temp[PATH_SIZE];
361 char temp2[PATH_SIZE];
362 char *head, *tail, *pos, *cpos, *attr, *rest;
365 unsigned int next_free_number;
366 struct sysfs_class_device *class_dev_parent;
384 static const struct subst_map {
387 enum subst_type type;
389 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
390 { .name = "id", .fmt = 'b', .type = SUBST_ID },
391 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
392 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
393 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
394 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
395 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
396 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
397 { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
398 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
399 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
400 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
401 { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
402 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
405 enum subst_type type;
406 const struct subst_map *subst;
411 while (head[0] != '\0') {
412 if (head[0] == '$') {
413 /* substitute named variable */
416 if (head[1] == '$') {
417 strlcpy(temp, head+2, sizeof(temp));
418 strlcpy(head+1, temp, maxsize);
423 for (subst = map; subst->name; subst++) {
424 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
426 tail = head + strlen(subst->name)+1;
427 dbg("will substitute format name '%s'", subst->name);
432 else if (head[0] == '%') {
433 /* substitute format char */
436 if (head[1] == '%') {
437 strlcpy(temp, head+2, sizeof(temp));
438 strlcpy(head+1, temp, maxsize);
444 len = get_format_len(&tail);
445 for (subst = map; subst->name; subst++) {
446 if (tail[0] == subst->fmt) {
449 dbg("will substitute format char '%c'", subst->fmt);
458 attr = get_format_attribute(&tail);
459 strlcpy(temp, tail, sizeof(temp));
460 dbg("format=%i, string='%s', tail='%s', class_dev=%p, sysfs_dev=%p",
461 type ,string, tail, class_dev, sysfs_device);
465 strlcat(string, udev->devpath, maxsize);
466 dbg("substitute devpath '%s'", udev->devpath);
469 strlcat(string, udev->bus_id, maxsize);
470 dbg("substitute bus_id '%s'", udev->bus_id);
472 case SUBST_KERNEL_NAME:
473 strlcat(string, udev->kernel_name, maxsize);
474 dbg("substitute kernel name '%s'", udev->kernel_name);
476 case SUBST_KERNEL_NUMBER:
477 strlcat(string, udev->kernel_number, maxsize);
478 dbg("substitute kernel number '%s'", udev->kernel_number);
481 sprintf(temp2, "%d", major(udev->devt));
482 strlcat(string, temp2, maxsize);
483 dbg("substitute major number '%s'", temp2);
486 sprintf(temp2, "%d", minor(udev->devt));
487 strlcat(string, temp2, maxsize);
488 dbg("substitute minor number '%s'", temp2);
491 if (udev->program_result[0] == '\0')
493 /* get part part of the result string */
496 i = strtoul(attr, &rest, 10);
498 dbg("request part #%d of result string", i);
499 cpos = udev->program_result;
501 while (cpos[0] != '\0' && !isspace(cpos[0]))
503 while (isspace(cpos[0]))
507 err("requested part of result string not found");
510 strlcpy(temp2, cpos, sizeof(temp2));
511 /* %{2+}c copies the whole string from the second part on */
512 if (rest[0] != '+') {
513 cpos = strchr(temp2, ' ');
517 strlcat(string, temp2, maxsize);
518 dbg("substitute part of result string '%s'", temp2);
520 strlcat(string, udev->program_result, maxsize);
521 dbg("substitute result string '%s'", udev->program_result);
526 dbg("missing attribute");
529 if (find_sysfs_attribute(class_dev, sysfs_device, attr, temp2, sizeof(temp2)) != 0) {
530 struct sysfs_device *parent_device;
532 dbg("sysfs attribute '%s' not found, walk up the physical devices", attr);
533 parent_device = sysfs_get_device_parent(sysfs_device);
534 while (parent_device) {
535 dbg("looking at '%s'", parent_device->path);
536 if (find_sysfs_attribute(NULL, parent_device, attr, temp2, sizeof(temp2)) == 0)
538 parent_device = sysfs_get_device_parent(parent_device);
543 /* strip trailing whitespace of sysfs value */
545 while (i > 0 && isspace(temp2[i-1]))
547 replace_untrusted_chars(temp2);
548 strlcat(string, temp2, maxsize);
549 dbg("substitute sysfs value '%s'", temp2);
552 next_free_number = find_free_number(string, udev->devpath);
553 if (next_free_number > 0) {
554 sprintf(temp2, "%d", next_free_number);
555 strlcat(string, temp2, maxsize);
561 class_dev_parent = sysfs_get_classdev_parent(class_dev);
562 if (class_dev_parent != NULL) {
563 struct udevice udev_parent;
565 dbg("found parent '%s', get the node name", class_dev_parent->path);
566 udev_init_device(&udev_parent, NULL, NULL, NULL);
567 /* lookup the name in the udev_db with the DEVPATH of the parent */
568 if (udev_db_get_device(&udev_parent, &class_dev_parent->path[strlen(sysfs_path)]) == 0) {
569 strlcat(string, udev_parent.name, maxsize);
570 dbg("substitute parent node name'%s'", udev_parent.name);
572 dbg("parent not found in database");
573 udev_cleanup_device(&udev_parent);
576 case SUBST_TEMP_NODE:
577 if (udev->tmp_node[0] == '\0') {
578 dbg("create temporary device node for callout");
579 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
580 udev_root, major(udev->devt), minor(udev->devt));
581 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
582 udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
584 strlcat(string, udev->tmp_node, maxsize);
585 dbg("substitute temporary device node name '%s'", udev->tmp_node);
588 strlcat(string, udev_root, maxsize);
589 dbg("substitute udev_root '%s'", udev_root);
592 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", temp2, sizeof(temp2)) != 0)
594 strlcat(string, temp2, maxsize);
595 dbg("substitute MODALIAS '%s'", temp2);
599 dbg("missing attribute");
604 dbg("env '%s' not avialable", attr);
607 dbg("substitute env '%s=%s'", attr, pos);
608 strlcat(string, pos, maxsize);
611 err("unknown substitution type=%i", type);
614 /* possibly truncate to format-char specified length */
617 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
619 strlcat(string, temp, maxsize);
623 static char *key_val(struct udev_rule *rule, struct key *key)
625 return rule->buf + key->val_off;
628 static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
630 return rule->buf + pair->key_name_off;
633 static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
636 char value[PATH_SIZE];
640 if (key->operation == KEY_OP_UNSET)
643 strlcpy(value, rule->buf + key->val_off, sizeof(value));
646 dbg("key %s value='%s'", key_name, key_value);
648 pos = strchr(key_value, '|');
653 dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
654 match = (strcmp_pattern(key_value, val) == 0);
655 if (match && (key->operation != KEY_OP_NOMATCH)) {
656 dbg("%s is true (matching value)", key_name);
659 if (!match && (key->operation == KEY_OP_NOMATCH)) {
660 dbg("%s is true (non-matching value)", key_name);
665 dbg("%s is false", key_name);
669 static int match_rule(struct udevice *udev, struct udev_rule *rule,
670 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
672 struct sysfs_device *parent_device = sysfs_device;
675 if (match_key("ACTION", rule, &rule->action, udev->action))
678 if (match_key("KERNEL", rule, &rule->kernel_name, udev->kernel_name))
681 if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->subsystem))
684 if (match_key("DEVPATH", rule, &rule->devpath, udev->devpath))
687 if (rule->modalias.operation != KEY_OP_UNSET) {
688 char value[NAME_SIZE];
690 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", value, sizeof(value)) != 0) {
691 dbg("MODALIAS value not found");
694 if (match_key("MODALIAS", rule, &rule->modalias, value))
698 for (i = 0; i < rule->env.count; i++) {
699 struct key_pair *pair = &rule->env.keys[i];
701 /* we only check for matches, assignments will be handled later */
702 if (pair->key.operation != KEY_OP_ASSIGN) {
703 const char *key_name = key_pair_name(rule, pair);
704 const char *value = getenv(key_name);
707 dbg("ENV{'%s'} is not set, treat as empty", key_name);
710 if (match_key("ENV", rule, &pair->key, value))
715 if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
718 match = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
719 if (match && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
720 dbg("WAIT_FOR_SYSFS is true (matching value)");
723 if (!match && (rule->wait_for_sysfs.operation == KEY_OP_NOMATCH)) {
724 dbg("WAIT_FOR_SYSFS is true, (non matching value)");
727 dbg("WAIT_FOR_SYSFS is false");
731 /* walk up the chain of physical devices and find a match */
733 /* check for matching driver */
734 if (rule->driver.operation != KEY_OP_UNSET) {
735 if (parent_device == NULL) {
736 dbg("device has no sysfs_device");
739 if (match_key("DRIVER", rule, &rule->driver, parent_device->driver_name))
743 /* check for matching bus value */
744 if (rule->bus.operation != KEY_OP_UNSET) {
745 if (parent_device == NULL) {
746 dbg("device has no sysfs_device");
749 if (match_key("BUS", rule, &rule->bus, parent_device->bus))
753 /* check for matching bus id */
754 if (rule->id.operation != KEY_OP_UNSET) {
755 if (parent_device == NULL) {
756 dbg("device has no sysfs_device");
759 if (match_key("ID", rule, &rule->id, parent_device->bus_id))
763 /* check for matching sysfs pairs */
764 if (rule->sysfs.count) {
765 dbg("check %i SYSFS keys", rule->sysfs.count);
766 for (i = 0; i < rule->sysfs.count; i++) {
767 struct key_pair *pair = &rule->sysfs.keys[i];
768 const char *key_name = key_pair_name(rule, pair);
769 const char *key_value = key_val(rule, &pair->key);
770 char value[VALUE_SIZE];
773 if (find_sysfs_attribute(class_dev, parent_device, key_name, value, sizeof(value)) != 0)
776 /* strip trailing whitespace of value, if not asked to match for it */
777 len = strlen(key_value);
778 if (len && !isspace(key_value[len-1])) {
780 while (len > 0 && isspace(value[len-1]))
782 dbg("removed %zi trailing whitespace chars from '%s'", strlen(value)-len, value);
785 if (match_key("SYSFS", rule, &pair->key, value))
788 dbg("all %i SYSFS keys matched", rule->sysfs.count);
791 /* found matching physical device */
794 dbg("try parent sysfs device");
795 parent_device = sysfs_get_device_parent(parent_device);
796 if (parent_device == NULL)
798 dbg("look at sysfs_device->path='%s'", parent_device->path);
799 dbg("look at sysfs_device->bus_id='%s'", parent_device->bus_id);
802 /* execute external program */
803 if (rule->program.operation != KEY_OP_UNSET) {
804 char program[PATH_SIZE];
805 char result[PATH_SIZE];
807 strlcpy(program, key_val(rule, &rule->program), sizeof(program));
808 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
809 if (run_program(program, udev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
810 dbg("PROGRAM is false");
811 udev->program_result[0] = '\0';
812 if (rule->program.operation != KEY_OP_NOMATCH)
815 dbg("PROGRAM matches");
816 remove_trailing_char(result, '\n');
817 replace_untrusted_chars(result);
818 dbg("result is '%s'", result);
819 strlcpy(udev->program_result, result, sizeof(udev->program_result));
820 dbg("PROGRAM returned successful");
821 if (rule->program.operation == KEY_OP_NOMATCH)
824 dbg("PROGRAM key is true");
827 /* check for matching result of external program */
828 if (match_key("RESULT", rule, &rule->result, udev->program_result))
831 /* import variables returned from program or or file into environment */
832 if (rule->import.operation != KEY_OP_UNSET) {
833 char import[PATH_SIZE];
836 strlcpy(import, key_val(rule, &rule->import), sizeof(import));
837 apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
838 dbg("check for IMPORT import='%s'", import);
839 if (rule->import_type == IMPORT_PROGRAM) {
840 rc = import_program_into_env(udev, import);
841 } else if (rule->import_type == IMPORT_FILE) {
842 dbg("import file import='%s'", import);
843 rc = import_file_into_env(udev, import);
844 } else if (rule->import_type == IMPORT_PARENT && class_dev) {
845 dbg("import parent import='%s'", import);
846 rc = import_parent_into_env(udev, class_dev, import);
849 dbg("IMPORT failed");
850 if (rule->import.operation != KEY_OP_NOMATCH)
853 dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
854 dbg("IMPORT key is true");
857 /* rule matches, if we have ENV assignments export it */
858 for (i = 0; i < rule->env.count; i++) {
859 struct key_pair *pair = &rule->env.keys[i];
861 if (pair->key.operation == KEY_OP_ASSIGN) {
862 const char *key_name = key_pair_name(rule, pair);
863 const char *value = key_val(rule, &pair->key);
865 name_list_key_add(&udev->env_list, key_name, value);
866 setenv(key_name, value, 1);
867 dbg("export ENV '%s=%s'", key_name, value);
877 int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev, struct sysfs_class_device *class_dev)
879 struct sysfs_class_device *class_dev_parent;
880 struct sysfs_device *sysfs_device = NULL;
881 struct udev_rule *rule;
884 dbg("class_dev->name='%s'", class_dev->name);
886 /* Figure out where the "device"-symlink is at. For char devices this will
887 * always be in the class_dev->path. On block devices, only the main block
888 * device will have the device symlink in it's path. All partition devices
889 * need to look at the symlink in its parent directory.
891 class_dev_parent = sysfs_get_classdev_parent(class_dev);
892 if (class_dev_parent != NULL) {
893 dbg("given class device has a parent, use this instead");
894 sysfs_device = sysfs_get_classdev_device(class_dev_parent);
896 sysfs_device = sysfs_get_classdev_device(class_dev);
900 dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
901 sysfs_device->path, sysfs_device->bus_id, sysfs_device->bus);
902 strlcpy(udev->bus_id, sysfs_device->bus_id, sizeof(udev->bus_id));
905 dbg("udev->kernel_name='%s'", udev->kernel_name);
907 /* look for a matching rule to apply */
908 udev_rules_iter_init(rules);
910 rule = udev_rules_iter_next(rules);
914 if (name_set && rule->name.operation != KEY_OP_UNSET) {
915 dbg("node name already set, rule ignored");
920 if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
922 if (rule->ignore_device) {
923 info("rule applied, '%s' is ignored", udev->kernel_name);
924 udev->ignore_device = 1;
927 if (rule->ignore_remove) {
928 udev->ignore_remove = 1;
929 dbg("remove event should be ignored");
931 /* apply all_partitions option only at a main block device */
932 if (rule->partitions && udev->type == DEV_BLOCK && udev->kernel_number[0] == '\0') {
933 udev->partitions = rule->partitions;
934 dbg("creation of partition nodes requested");
937 /* apply permissions */
938 if (!udev->mode_final && rule->mode != 0000) {
939 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
940 udev->mode_final = 1;
941 udev->mode = rule->mode;
942 dbg("applied mode=%#o to '%s'", rule->mode, udev->kernel_name);
944 if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
945 if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
946 udev->owner_final = 1;
947 strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
948 apply_format(udev, udev->owner, sizeof(udev->owner), class_dev, sysfs_device);
949 dbg("applied owner='%s' to '%s'", udev->owner, udev->kernel_name);
951 if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
952 if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
953 udev->group_final = 1;
954 strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
955 apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
956 dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
959 /* collect symlinks */
960 if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
961 char temp[PATH_SIZE];
964 if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
965 udev->symlink_final = 1;
966 if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
967 info("reset symlink list");
968 name_list_cleanup(&udev->symlink_list);
970 strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
971 apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
972 dbg("rule applied, added symlink '%s'", temp);
974 /* add multiple symlinks separated by spaces */
976 while (isspace(pos[0]))
978 next = strchr(pos, ' ');
981 info("add symlink '%s'", pos);
982 name_list_add(&udev->symlink_list, pos, 0);
983 while (isspace(next[1]))
986 next = strchr(pos, ' ');
988 if (pos[0] != '\0') {
989 info("add symlink '%s'", pos);
990 name_list_add(&udev->symlink_list, pos, 0);
994 /* set name, later rules with name set will be ignored */
995 if (rule->name.operation != KEY_OP_UNSET) {
997 strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
998 apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
1000 info("rule applied, '%s' becomes '%s'", udev->kernel_name, udev->name);
1001 if (udev->type != DEV_NET)
1002 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1003 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1006 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1007 char program[PATH_SIZE];
1009 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1010 udev->run_final = 1;
1011 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1012 info("reset run list");
1013 name_list_cleanup(&udev->run_list);
1015 strlcpy(program, key_val(rule, &rule->run), sizeof(program));
1016 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
1017 dbg("add run '%s'", program);
1018 name_list_add(&udev->run_list, program, 0);
1021 if (rule->last_rule) {
1022 dbg("last rule to be applied");
1026 if (rule->goto_label.operation != KEY_OP_UNSET) {
1027 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1028 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
1034 strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
1035 info("no node name set, will use kernel name '%s'", udev->name);
1038 if (udev->tmp_node[0] != '\0') {
1039 dbg("removing temporary device node");
1040 unlink_secure(udev->tmp_node);
1041 udev->tmp_node[0] = '\0';
1047 int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev,
1048 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_dev)
1050 struct udev_rule *rule;
1052 if (class_dev && !sysfs_dev)
1053 sysfs_dev = sysfs_get_classdev_device(class_dev);
1055 dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
1056 sysfs_dev->path, sysfs_dev->bus_id, sysfs_dev->bus);
1057 strlcpy(udev->bus_id, sysfs_dev->bus_id, sizeof(udev->bus_id));
1060 dbg("udev->kernel_name='%s'", udev->kernel_name);
1062 /* look for a matching rule to apply */
1063 udev_rules_iter_init(rules);
1065 rule = udev_rules_iter_next(rules);
1069 dbg("process rule");
1070 if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
1071 rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
1072 dbg("skip rule that names a device");
1076 if (match_rule(udev, rule, class_dev, sysfs_dev) == 0) {
1077 if (rule->ignore_device) {
1078 info("rule applied, '%s' is ignored", udev->kernel_name);
1079 udev->ignore_device = 1;
1083 if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
1084 char program[PATH_SIZE];
1086 if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
1087 info("reset run list");
1088 name_list_cleanup(&udev->run_list);
1090 strlcpy(program, key_val(rule, &rule->run), sizeof(program));
1091 apply_format(udev, program, sizeof(program), class_dev, sysfs_dev);
1092 dbg("add run '%s'", program);
1093 name_list_add(&udev->run_list, program, 0);
1094 if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
1098 if (rule->last_rule) {
1099 dbg("last rule to be applied");
1103 if (rule->goto_label.operation != KEY_OP_UNSET) {
1104 dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
1105 udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));