6 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2003-2005 Kay Sievers <kay.sievers@vrfy.org>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation version 2 of the License.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 #include "libsysfs/sysfs/libsysfs.h"
37 #include "udev_libc_wrapper.h"
39 #include "udev_utils.h"
40 #include "udev_version.h"
42 #include "udev_rules.h"
46 /* compare string with pattern (supports * ? [0-9] [!A-Z]) */
47 static int strcmp_pattern(const char *p, const char *s)
52 return (p[0] != '\0');
63 while ((p[0] != '\0') && (p[0] != ']')) {
66 if ((s[0] >= p[0]) && (s[0] <= p[2]))
70 match = (p[0] == s[0]);
74 while ((p[0] != '\0') && (p[0] != ']'))
77 return strcmp_pattern(p+1, s+1);
83 if (strcmp_pattern(p, s+1))
84 return strcmp_pattern(p+1, s);
92 if ((p[0] == s[0]) || (p[0] == '?'))
93 return strcmp_pattern(p+1, s+1);
99 /* extract possible {attr} and move str behind it */
100 static char *get_format_attribute(char **str)
105 if (*str[0] == '{') {
106 pos = strchr(*str, '}');
108 err("missing closing brace for format");
114 dbg("attribute='%s', str='%s'", attr, *str);
119 /* extract possible format length and move str behind it*/
120 static int get_format_len(char **str)
125 if (isdigit(*str[0])) {
126 num = (int) strtoul(*str, &tail, 10);
129 dbg("format length=%i", num);
132 err("format parsing error '%s'", *str);
138 static int get_key(char **line, char **key, char **value)
147 if (strchr(linepos, '\\')) {
148 dbg("escaped characters are not supported, skip");
152 /* skip whitespace */
153 while (isspace(linepos[0]))
160 if (linepos[0] == '\0')
162 if (isspace(linepos[0]))
164 if (linepos[0] == '=')
172 /* skip whitespace */
173 while (isspace(linepos[0]))
177 if (linepos[0] == '\0')
180 if (linepos[0] == '"') {
182 temp = strchr(linepos, '"');
186 } else if (linepos[0] == '\'') {
188 temp = strchr(linepos, '\'');
194 while (temp[0] && !isspace(temp[0]))
203 static int import_keys_into_env(const char *buf, size_t bufsize)
205 char line[LINE_SIZE];
214 /* loop through the whole file */
217 while (cur < bufsize) {
218 count = buf_get_line(buf, bufsize, cur);
223 if (count >= sizeof(line)) {
224 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
228 /* eat the whitespace */
229 while ((count > 0) && isspace(bufline[0])) {
236 /* see if this is a comment */
237 if (bufline[0] == COMMENT_CHARACTER)
240 strlcpy(line, bufline, count+1);
243 if (get_key(&linepos, &variable, &value) == 0) {
244 dbg("import '%s=%s'", variable, value);
245 setenv(variable, value, 1);
252 static int import_file_into_env(const char *filename)
257 if (file_map(filename, &buf, &bufsize) != 0) {
258 err("can't open '%s'", filename);
261 import_keys_into_env(buf, bufsize);
262 file_unmap(buf, bufsize);
267 static int import_program_into_env(struct udevice *udev, const char *program)
272 if (execute_program(program, udev->subsystem, result, sizeof(result), &reslen) != 0)
274 return import_keys_into_env(result, reslen);
277 /* finds the lowest positive N such that <name>N isn't present in the udevdb
278 * if <name> doesn't exist, 0 is returned, N otherwise
280 static int find_free_number(struct udevice *udev, const char *name)
282 char devpath[PATH_SIZE];
283 char filename[PATH_SIZE];
286 strlcpy(filename, name, sizeof(filename));
288 dbg("look for existing node '%s'", filename);
289 if (udev_db_search_name(devpath, sizeof(devpath), filename) != 0) {
290 dbg("free num=%d", num);
296 info("find_free_number gone crazy (num=%d), aborted", num);
299 snprintf(filename, sizeof(filename), "%s%d", name, num);
300 filename[sizeof(filename)-1] = '\0';
304 static int find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device,
305 const char *name, char *value, size_t len)
307 struct sysfs_attribute *tmpattr;
309 dbg("look for device attribute '%s'", name);
311 dbg("look for class attribute '%s/%s'", class_dev->path, name);
312 tmpattr = sysfs_get_classdev_attr(class_dev, name);
317 dbg("look for devices attribute '%s/%s'", sysfs_device->path, name);
318 tmpattr = sysfs_get_device_attr(sysfs_device, name);
325 strlcpy(value, tmpattr->value, len);
326 remove_trailing_char(value, '\n');
328 dbg("found attribute '%s'", tmpattr->path);
332 static void apply_format(struct udevice *udev, char *string, size_t maxsize,
333 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
335 char temp[PATH_SIZE];
336 char temp2[PATH_SIZE];
337 char *head, *tail, *pos, *cpos, *attr, *rest;
340 unsigned int next_free_number;
341 struct sysfs_class_device *class_dev_parent;
359 static const struct subst_map {
362 enum subst_type type;
364 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
365 { .name = "id", .fmt = 'b', .type = SUBST_ID },
366 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
367 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
368 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
369 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
370 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
371 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
372 { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
373 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
374 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
375 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
376 { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
377 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
380 enum subst_type type;
381 const struct subst_map *subst;
386 while (head[0] != '\0') {
387 if (head[0] == '$') {
388 /* substitute named variable */
391 if (head[1] == '$') {
392 strlcpy(temp, head+2, sizeof(temp));
393 strlcpy(head+1, temp, maxsize);
398 for (subst = map; subst->name; subst++) {
399 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
401 tail = head + strlen(subst->name)+1;
402 dbg("will substitute format name '%s'", subst->name);
407 else if (head[0] == '%') {
408 /* substitute format char */
411 if (head[1] == '%') {
412 strlcpy(temp, head+2, sizeof(temp));
413 strlcpy(head+1, temp, maxsize);
419 len = get_format_len(&tail);
420 for (subst = map; subst->name; subst++) {
421 if (tail[0] == subst->fmt) {
424 dbg("will substitute format char '%c'", subst->fmt);
433 attr = get_format_attribute(&tail);
434 strlcpy(temp, tail, sizeof(temp));
435 dbg("format=%i, string='%s', tail='%s', class_dev=%p, sysfs_dev=%p",
436 type ,string, tail, class_dev, sysfs_device);
440 strlcat(string, udev->devpath, maxsize);
441 dbg("substitute devpath '%s'", udev->devpath);
444 strlcat(string, udev->bus_id, maxsize);
445 dbg("substitute bus_id '%s'", udev->bus_id);
447 case SUBST_KERNEL_NAME:
448 strlcat(string, udev->kernel_name, maxsize);
449 dbg("substitute kernel name '%s'", udev->kernel_name);
451 case SUBST_KERNEL_NUMBER:
452 strlcat(string, udev->kernel_number, maxsize);
453 dbg("substitute kernel number '%s'", udev->kernel_number);
456 sprintf(temp2, "%d", major(udev->devt));
457 strlcat(string, temp2, maxsize);
458 dbg("substitute major number '%s'", temp2);
461 sprintf(temp2, "%d", minor(udev->devt));
462 strlcat(string, temp2, maxsize);
463 dbg("substitute minor number '%s'", temp2);
466 if (udev->program_result[0] == '\0')
468 /* get part part of the result string */
471 i = strtoul(attr, &rest, 10);
473 dbg("request part #%d of result string", i);
474 cpos = udev->program_result;
476 while (cpos[0] != '\0' && !isspace(cpos[0]))
478 while (isspace(cpos[0]))
482 err("requested part of result string not found");
485 strlcpy(temp2, cpos, sizeof(temp2));
486 /* %{2+}c copies the whole string from the second part on */
487 if (rest[0] != '+') {
488 cpos = strchr(temp2, ' ');
492 strlcat(string, temp2, maxsize);
493 dbg("substitute part of result string '%s'", temp2);
495 strlcat(string, udev->program_result, maxsize);
496 dbg("substitute result string '%s'", udev->program_result);
501 dbg("missing attribute");
504 if (find_sysfs_attribute(class_dev, sysfs_device, attr, temp2, sizeof(temp2)) != 0) {
505 struct sysfs_device *parent_device;
507 dbg("sysfs attribute '%s' not found, walk up the physical devices", attr);
508 parent_device = sysfs_get_device_parent(sysfs_device);
509 while (parent_device) {
510 dbg("looking at '%s'", parent_device->path);
511 if (find_sysfs_attribute(NULL, parent_device, attr, temp2, sizeof(temp2)) == 0)
513 parent_device = sysfs_get_device_parent(parent_device);
518 /* strip trailing whitespace of sysfs value */
520 while (i > 0 && isspace(temp2[i-1]))
522 replace_untrusted_chars(temp2);
523 strlcat(string, temp2, maxsize);
524 dbg("substitute sysfs value '%s'", temp2);
527 next_free_number = find_free_number(udev, string);
528 if (next_free_number > 0) {
529 sprintf(temp2, "%d", next_free_number);
530 strlcat(string, temp2, maxsize);
536 class_dev_parent = sysfs_get_classdev_parent(class_dev);
537 if (class_dev_parent != NULL) {
538 struct udevice udev_parent;
540 dbg("found parent '%s', get the node name", class_dev_parent->path);
541 udev_init_device(&udev_parent, NULL, NULL, NULL);
542 /* lookup the name in the udev_db with the DEVPATH of the parent */
543 if (udev_db_get_device(&udev_parent, &class_dev_parent->path[strlen(sysfs_path)]) == 0) {
544 strlcat(string, udev_parent.name, maxsize);
545 dbg("substitute parent node name'%s'", udev_parent.name);
547 dbg("parent not found in database");
548 udev_cleanup_device(&udev_parent);
551 case SUBST_TEMP_NODE:
552 if (udev->tmp_node[0] == '\0') {
553 dbg("create temporary device node for callout");
554 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
555 udev_root, major(udev->devt), minor(udev->devt));
556 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
557 udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
559 strlcat(string, udev->tmp_node, maxsize);
560 dbg("substitute temporary device node name '%s'", udev->tmp_node);
563 strlcat(string, udev_root, maxsize);
564 dbg("substitute udev_root '%s'", udev_root);
567 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", temp2, sizeof(temp2)) != 0)
569 strlcat(string, temp2, maxsize);
570 dbg("substitute MODALIAS '%s'", temp2);
574 dbg("missing attribute");
580 strlcat(string, pos, maxsize);
581 dbg("substitute env '%s=%s'", attr, pos);
584 err("unknown substitution type=%i", type);
587 /* possibly truncate to format-char specified length */
590 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
592 strlcat(string, temp, maxsize);
596 static int match_rule(struct udevice *udev, struct udev_rule *rule,
597 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
599 struct sysfs_device *parent_device = sysfs_device;
601 if (rule->action_operation != KEY_OP_UNSET) {
602 dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
603 rule->action, udev->action);
604 if (strcmp_pattern(rule->action, udev->action) != 0) {
605 dbg(KEY_ACTION " is not matching");
606 if (rule->action_operation != KEY_OP_NOMATCH)
609 dbg(KEY_ACTION " matches");
610 if (rule->action_operation == KEY_OP_NOMATCH)
613 dbg(KEY_ACTION " key is true");
616 if (rule->kernel_operation != KEY_OP_UNSET) {
617 dbg("check for " KEY_KERNEL " rule->kernel='%s' udev_kernel_name='%s'",
618 rule->kernel, udev->kernel_name);
619 if (strcmp_pattern(rule->kernel, udev->kernel_name) != 0) {
620 dbg(KEY_KERNEL " is not matching");
621 if (rule->kernel_operation != KEY_OP_NOMATCH)
624 dbg(KEY_KERNEL " matches");
625 if (rule->kernel_operation == KEY_OP_NOMATCH)
628 dbg(KEY_KERNEL " key is true");
631 if (rule->subsystem_operation != KEY_OP_UNSET) {
632 dbg("check for " KEY_SUBSYSTEM " rule->subsystem='%s' udev->subsystem='%s'",
633 rule->subsystem, udev->subsystem);
634 if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
635 dbg(KEY_SUBSYSTEM " is not matching");
636 if (rule->subsystem_operation != KEY_OP_NOMATCH)
639 dbg(KEY_SUBSYSTEM " matches");
640 if (rule->subsystem_operation == KEY_OP_NOMATCH)
643 dbg(KEY_SUBSYSTEM " key is true");
646 if (rule->devpath_operation != KEY_OP_UNSET) {
647 dbg("check for " KEY_DEVPATH " rule->devpath='%s' udev->devpath='%s'",
648 rule->devpath, udev->devpath);
649 if (strcmp_pattern(rule->devpath, udev->devpath) != 0) {
650 dbg(KEY_DEVPATH " is not matching");
651 if (rule->devpath_operation != KEY_OP_NOMATCH)
654 dbg(KEY_DEVPATH " matches");
655 if (rule->devpath_operation == KEY_OP_NOMATCH)
658 dbg(KEY_DEVPATH " key is true");
661 if (rule->modalias_operation != KEY_OP_UNSET) {
662 char value[NAME_SIZE];
664 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", value, sizeof(value)) != 0) {
665 dbg(KEY_MODALIAS " value not found");
668 dbg("check for " KEY_MODALIAS " rule->modalias='%s' modalias='%s'",
669 rule->modalias, value);
670 if (strcmp_pattern(rule->modalias, value) != 0) {
671 dbg(KEY_MODALIAS " is not matching");
672 if (rule->modalias_operation != KEY_OP_NOMATCH)
675 dbg(KEY_MODALIAS " matches");
676 if (rule->modalias_operation == KEY_OP_NOMATCH)
679 dbg(KEY_MODALIAS " key is true");
682 if (rule->env_pair_count) {
685 dbg("check for " KEY_ENV " pairs");
686 for (i = 0; i < rule->env_pair_count; i++) {
687 struct key_pair *pair;
690 pair = &rule->env_pair[i];
691 value = getenv(pair->name);
693 dbg(KEY_ENV "{'%s'} is not found", pair->name);
696 if (strcmp_pattern(pair->value, value) != 0) {
697 dbg(KEY_ENV "{'%s'} is not matching", pair->name);
698 if (pair->operation != KEY_OP_NOMATCH)
701 dbg(KEY_ENV "{'%s'} matches", pair->name);
702 if (pair->operation == KEY_OP_NOMATCH)
706 dbg(KEY_ENV " key is true");
709 /* walk up the chain of physical devices and find a match */
711 /* check for matching driver */
712 if (rule->driver_operation != KEY_OP_UNSET) {
713 if (parent_device == NULL) {
714 dbg("device has no sysfs_device");
717 dbg("check for " KEY_DRIVER " rule->driver='%s' sysfs_device->driver_name='%s'",
718 rule->driver, parent_device->driver_name);
719 if (strcmp_pattern(rule->driver, parent_device->driver_name) != 0) {
720 dbg(KEY_DRIVER " is not matching");
721 if (rule->driver_operation != KEY_OP_NOMATCH)
724 dbg(KEY_DRIVER " matches");
725 if (rule->driver_operation == KEY_OP_NOMATCH)
728 dbg(KEY_DRIVER " key is true");
731 /* check for matching bus value */
732 if (rule->bus_operation != KEY_OP_UNSET) {
733 if (parent_device == NULL) {
734 dbg("device has no sysfs_device");
737 dbg("check for " KEY_BUS " rule->bus='%s' sysfs_device->bus='%s'",
738 rule->bus, parent_device->bus);
739 if (strcmp_pattern(rule->bus, parent_device->bus) != 0) {
740 dbg(KEY_BUS " is not matching");
741 if (rule->bus_operation != KEY_OP_NOMATCH)
744 dbg(KEY_BUS " matches");
745 if (rule->bus_operation == KEY_OP_NOMATCH)
748 dbg(KEY_BUS " key is true");
751 /* check for matching bus id */
752 if (rule->id_operation != KEY_OP_UNSET) {
753 if (parent_device == NULL) {
754 dbg("device has no sysfs_device");
757 dbg("check " KEY_ID);
758 if (strcmp_pattern(rule->id, parent_device->bus_id) != 0) {
759 dbg(KEY_ID " is not matching");
760 if (rule->id_operation != KEY_OP_NOMATCH)
763 dbg(KEY_ID " matches");
764 if (rule->id_operation == KEY_OP_NOMATCH)
767 dbg(KEY_ID " key is true");
770 /* check for matching sysfs pairs */
771 if (rule->sysfs_pair_count) {
774 dbg("check " KEY_SYSFS " pairs");
775 for (i = 0; i < rule->sysfs_pair_count; i++) {
776 struct key_pair *pair;
777 char value[VALUE_SIZE];
780 pair = &rule->sysfs_pair[i];
781 if (find_sysfs_attribute(class_dev, parent_device, pair->name, value, sizeof(value)) != 0)
784 /* strip trailing whitespace of value, if not asked to match for it */
785 len = strlen(pair->value);
786 if (len && !isspace(pair->value[len-1])) {
788 while (len > 0 && isspace(value[len-1]))
790 dbg("removed %i trailing whitespace chars from '%s'", strlen(value)-len, value);
793 dbg("compare attribute '%s' value '%s' with '%s'", pair->name, value, pair->value);
794 if (strcmp_pattern(pair->value, value) != 0) {
795 dbg(KEY_SYSFS "{'%s'} is not matching", pair->name);
796 if (pair->operation != KEY_OP_NOMATCH)
799 dbg(KEY_SYSFS "{'%s'} matches", pair->name);
800 if (pair->operation == KEY_OP_NOMATCH)
804 dbg(KEY_SYSFS " keys are true");
807 /* found matching physical device */
810 dbg("try parent sysfs device");
811 parent_device = sysfs_get_device_parent(parent_device);
812 if (parent_device == NULL)
814 dbg("look at sysfs_device->path='%s'", parent_device->path);
815 dbg("look at sysfs_device->bus_id='%s'", parent_device->bus_id);
818 /* import variables from file into environment */
819 if (rule->import_operation != KEY_OP_UNSET) {
820 char import[PATH_SIZE];
823 strlcpy(import, rule->import, sizeof(import));
824 apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
825 dbg("check for " KEY_IMPORT " import='%s'", import);
826 if (rule->import_exec) {
827 dbg("run executable file import='%s'", import);
828 rc = import_program_into_env(udev, import);
830 dbg("import file import='%s'", import);
831 rc = import_file_into_env(import);
834 dbg(KEY_IMPORT " failed");
835 if (rule->import_operation != KEY_OP_NOMATCH)
838 dbg(KEY_IMPORT " '%s' imported", rule->import);
839 dbg(KEY_IMPORT " key is true");
842 /* execute external program */
843 if (rule->program_operation != KEY_OP_UNSET) {
844 char program[PATH_SIZE];
845 char result[PATH_SIZE];
847 strlcpy(program, rule->program, sizeof(program));
848 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
849 dbg("check for " KEY_PROGRAM " program='%s", program);
850 if (execute_program(program, udev->subsystem, result, sizeof(result), NULL) != 0) {
851 dbg(KEY_PROGRAM " is not matching");
852 if (rule->program_operation != KEY_OP_NOMATCH)
855 dbg(KEY_PROGRAM " matches");
856 remove_trailing_char(result, '\n');
857 replace_untrusted_chars(result);
858 dbg("result is '%s'", result);
859 strlcpy(udev->program_result, result, sizeof(udev->program_result));
860 dbg(KEY_PROGRAM " returned successful");
861 if (rule->program_operation == KEY_OP_NOMATCH)
864 dbg(KEY_PROGRAM " key is true");
867 /* check for matching result of external program */
868 if (rule->result_operation != KEY_OP_UNSET) {
869 dbg("check for " KEY_RESULT " rule->result='%s', udev->program_result='%s'",
870 rule->result, udev->program_result);
871 if (strcmp_pattern(rule->result, udev->program_result) != 0) {
872 dbg(KEY_RESULT " is not matching");
873 if (rule->result_operation != KEY_OP_NOMATCH)
876 dbg(KEY_RESULT " matches");
877 if (rule->result_operation == KEY_OP_NOMATCH)
880 dbg(KEY_RESULT " key is true");
890 int udev_rules_get_name(struct udevice *udev, struct sysfs_class_device *class_dev)
892 struct sysfs_class_device *class_dev_parent;
893 struct sysfs_device *sysfs_device = NULL;
894 struct udev_rule *rule;
896 dbg("class_dev->name='%s'", class_dev->name);
898 /* Figure out where the "device"-symlink is at. For char devices this will
899 * always be in the class_dev->path. On block devices, only the main block
900 * device will have the device symlink in it's path. All partition devices
901 * need to look at the symlink in its parent directory.
903 class_dev_parent = sysfs_get_classdev_parent(class_dev);
904 if (class_dev_parent != NULL) {
905 dbg("given class device has a parent, use this instead");
906 sysfs_device = sysfs_get_classdev_device(class_dev_parent);
908 sysfs_device = sysfs_get_classdev_device(class_dev);
912 dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
913 sysfs_device->path, sysfs_device->bus_id, sysfs_device->bus);
914 strlcpy(udev->bus_id, sysfs_device->bus_id, sizeof(udev->bus_id));
917 dbg("udev->kernel_name='%s'", udev->kernel_name);
919 /* look for a matching rule to apply */
920 udev_rules_iter_init();
922 rule = udev_rules_iter_next();
926 if (udev->name_set && rule->name_operation != KEY_OP_UNSET) {
927 dbg("node name already set, rule ignored");
932 if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
934 if (rule->ignore_device) {
935 info("configured rule in '%s[%i]' applied, '%s' is ignored",
936 rule->config_file, rule->config_line, udev->kernel_name);
937 udev->ignore_device = 1;
940 if (rule->ignore_remove) {
941 udev->ignore_remove = 1;
942 dbg("remove event should be ignored");
944 /* apply all_partitions option only at a main block device */
945 if (rule->partitions && udev->type == DEV_BLOCK && udev->kernel_number[0] == '\0') {
946 udev->partitions = rule->partitions;
947 dbg("creation of partition nodes requested");
950 /* apply permissions */
951 if (!udev->mode_final && rule->mode != 0000) {
952 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
953 udev->mode_final = 1;
954 udev->mode = rule->mode;
955 dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
957 if (!udev->owner_final && rule->owner[0] != '\0') {
958 if (rule->owner_operation == KEY_OP_ASSIGN_FINAL)
959 udev->owner_final = 1;
960 strlcpy(udev->owner, rule->owner, sizeof(udev->owner));
961 apply_format(udev, udev->owner, sizeof(udev->owner), class_dev, sysfs_device);
962 dbg("applied owner='%s' to '%s'", udev->owner, udev->kernel_name);
964 if (!udev->group_final && rule->group[0] != '\0') {
965 if (rule->group_operation == KEY_OP_ASSIGN_FINAL)
966 udev->group_final = 1;
967 strlcpy(udev->group, rule->group, sizeof(udev->group));
968 apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
969 dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
972 /* collect symlinks */
973 if (!udev->symlink_final && rule->symlink_operation != KEY_OP_UNSET) {
974 char temp[PATH_SIZE];
977 if (rule->symlink_operation == KEY_OP_ASSIGN_FINAL)
978 udev->symlink_final = 1;
979 if (rule->symlink_operation == KEY_OP_ASSIGN || rule->symlink_operation == KEY_OP_ASSIGN_FINAL) {
980 struct name_entry *name_loop;
981 struct name_entry *temp_loop;
983 info("reset symlink list");
984 list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
985 list_del(&name_loop->node);
989 if (rule->symlink[0] != '\0') {
990 info("configured rule in '%s[%i]' applied, added symlink '%s'",
991 rule->config_file, rule->config_line, rule->symlink);
992 strlcpy(temp, rule->symlink, sizeof(temp));
993 apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
995 /* add multiple symlinks separated by spaces */
997 next = strchr(temp, ' ');
1000 info("add symlink '%s'", pos);
1001 name_list_add(&udev->symlink_list, pos, 0);
1003 next = strchr(pos, ' ');
1005 info("add symlink '%s'", pos);
1006 name_list_add(&udev->symlink_list, pos, 0);
1010 /* set name, later rules with name set will be ignored */
1011 if (rule->name_operation != KEY_OP_UNSET) {
1013 if (rule->name[0] == '\0') {
1014 info("configured rule in '%s[%i]' applied, node handling for '%s' supressed",
1015 rule->config_file, rule->config_line, udev->kernel_name);
1017 strlcpy(udev->name, rule->name, sizeof(udev->name));
1018 apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
1019 strlcpy(udev->config_file, rule->config_file, sizeof(udev->config_file));
1020 udev->config_line = rule->config_line;
1022 info("configured rule in '%s:%i' applied, '%s' becomes '%s'",
1023 rule->config_file, rule->config_line, udev->kernel_name, rule->name);
1024 if (udev->type != DEV_NET)
1025 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1026 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1030 if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
1031 char program[PATH_SIZE];
1033 if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
1034 udev->run_final = 1;
1035 if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
1036 struct name_entry *name_loop;
1037 struct name_entry *temp_loop;
1039 info("reset run list");
1040 list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
1041 list_del(&name_loop->node);
1045 if (rule->run[0] != '\0') {
1046 strlcpy(program, rule->run, sizeof(program));
1047 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
1048 dbg("add run '%s'", program);
1049 name_list_add(&udev->run_list, program, 0);
1053 if (rule->last_rule) {
1054 dbg("last rule to be applied");
1060 if (udev->name[0] == '\0') {
1061 strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
1062 info("no rule found, use kernel name '%s'", udev->name);
1065 if (udev->tmp_node[0] != '\0') {
1066 dbg("removing temporary device node");
1067 unlink_secure(udev->tmp_node);
1068 udev->tmp_node[0] = '\0';
1074 int udev_rules_get_run(struct udevice *udev, struct sysfs_device *sysfs_device)
1076 struct udev_rule *rule;
1078 /* look for a matching rule to apply */
1079 udev_rules_iter_init();
1081 rule = udev_rules_iter_next();
1085 dbg("process rule");
1086 if (rule->run_operation == KEY_OP_UNSET)
1089 if (rule->name_operation != KEY_OP_UNSET || rule->symlink_operation != KEY_OP_UNSET ||
1090 rule->mode != 0000 || rule->owner[0] != '\0' || rule->group[0] != '\0') {
1091 dbg("skip rule that names a device");
1095 if (match_rule(udev, rule, NULL, sysfs_device) == 0) {
1096 if (rule->ignore_device) {
1097 info("configured rule in '%s[%i]' applied, '%s' is ignored",
1098 rule->config_file, rule->config_line, udev->kernel_name);
1099 udev->ignore_device = 1;
1103 if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
1104 char program[PATH_SIZE];
1106 if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
1107 struct name_entry *name_loop;
1108 struct name_entry *temp_loop;
1110 info("reset run list");
1111 list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
1112 list_del(&name_loop->node);
1116 if (rule->run[0] != '\0') {
1117 strlcpy(program, rule->run, sizeof(program));
1118 apply_format(udev, program, sizeof(program), NULL, sysfs_device);
1119 dbg("add run '%s'", program);
1120 name_list_add(&udev->run_list, program, 0);
1122 if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
1126 if (rule->last_rule) {
1127 dbg("last rule to be applied");