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_file_into_env(const char *filename)
205 char line[LINE_SIZE];
217 if (file_map(filename, &buf, &bufsize) != 0) {
218 err("can't open '%s'", filename);
222 /* loop through the whole file */
225 while (cur < bufsize) {
226 count = buf_get_line(buf, bufsize, cur);
231 if (count >= sizeof(line)) {
232 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
236 /* eat the whitespace */
237 while ((count > 0) && isspace(bufline[0])) {
244 /* see if this is a comment */
245 if (bufline[0] == COMMENT_CHARACTER)
248 strlcpy(line, bufline, count+1);
251 if (get_key(&linepos, &variable, &value) == 0) {
252 dbg("import %s=%s", variable, value);
253 setenv(variable, value, 0);
257 file_unmap(buf, bufsize);
261 /** Finds the lowest positive N such that <name>N isn't present in
262 * $(udevroot) either as a file or a symlink.
264 * @param name Name to check for
265 * @return 0 if <name> didn't exist and N otherwise.
267 static int find_free_number(struct udevice *udev, const char *name)
269 char devpath[PATH_SIZE];
270 char filename[PATH_SIZE];
273 strlcpy(filename, name, sizeof(filename));
275 dbg("look for existing node '%s'", filename);
276 if (udev_db_search_name(devpath, sizeof(devpath), filename) != 0) {
277 dbg("free num=%d", num);
283 info("find_free_number gone crazy (num=%d), aborted", num);
286 snprintf(filename, sizeof(filename), "%s%d", name, num);
287 filename[sizeof(filename)-1] = '\0';
291 static int find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device,
292 const char *name, char *value, size_t len)
294 struct sysfs_attribute *tmpattr;
296 dbg("look for device attribute '%s'", name);
298 dbg("look for class attribute '%s/%s'", class_dev->path, name);
299 tmpattr = sysfs_get_classdev_attr(class_dev, name);
304 dbg("look for devices attribute '%s/%s'", sysfs_device->path, name);
305 tmpattr = sysfs_get_device_attr(sysfs_device, name);
312 strlcpy(value, tmpattr->value, len);
313 remove_trailing_char(value, '\n');
315 dbg("found attribute '%s'", tmpattr->path);
319 static void apply_format(struct udevice *udev, char *string, size_t maxsize,
320 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
322 char temp[PATH_SIZE];
323 char temp2[PATH_SIZE];
324 char *head, *tail, *pos, *cpos, *attr, *rest;
327 unsigned int next_free_number;
328 struct sysfs_class_device *class_dev_parent;
346 static const struct subst_map {
349 enum subst_type type;
351 { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
352 { .name = "id", .fmt = 'b', .type = SUBST_ID },
353 { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
354 { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
355 { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
356 { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
357 { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
358 { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
359 { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
360 { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
361 { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
362 { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
363 { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
364 { .name = "env", .fmt = 'E', .type = SUBST_ENV },
367 enum subst_type type;
368 const struct subst_map *subst;
373 while (head[0] != '\0') {
374 if (head[0] == '$') {
375 /* substitute named variable */
378 if (head[1] == '$') {
379 strlcpy(temp, head+2, sizeof(temp));
380 strlcpy(head+1, temp, maxsize);
385 for (subst = map; subst->name; subst++) {
386 if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
388 tail = head + strlen(subst->name)+1;
389 dbg("will substitute format name '%s'", subst->name);
394 else if (head[0] == '%') {
395 /* substitute format char */
398 if (head[1] == '%') {
399 strlcpy(temp, head+2, sizeof(temp));
400 strlcpy(head+1, temp, maxsize);
406 len = get_format_len(&tail);
407 for (subst = map; subst->name; subst++) {
408 if (tail[0] == subst->fmt) {
411 dbg("will substitute format char '%c'", subst->fmt);
420 attr = get_format_attribute(&tail);
421 strlcpy(temp, tail, sizeof(temp));
422 dbg("format=%i, string='%s', tail='%s', class_dev=%p, sysfs_dev=%p",
423 type ,string, tail, class_dev, sysfs_device);
427 strlcat(string, udev->devpath, maxsize);
428 dbg("substitute devpath '%s'", udev->devpath);
431 strlcat(string, udev->bus_id, maxsize);
432 dbg("substitute bus_id '%s'", udev->bus_id);
434 case SUBST_KERNEL_NAME:
435 strlcat(string, udev->kernel_name, maxsize);
436 dbg("substitute kernel name '%s'", udev->kernel_name);
438 case SUBST_KERNEL_NUMBER:
439 strlcat(string, udev->kernel_number, maxsize);
440 dbg("substitute kernel number '%s'", udev->kernel_number);
443 sprintf(temp2, "%d", major(udev->devt));
444 strlcat(string, temp2, maxsize);
445 dbg("substitute major number '%s'", temp2);
448 sprintf(temp2, "%d", minor(udev->devt));
449 strlcat(string, temp2, maxsize);
450 dbg("substitute minor number '%s'", temp2);
453 if (udev->program_result[0] == '\0')
455 /* get part part of the result string */
458 i = strtoul(attr, &rest, 10);
460 dbg("request part #%d of result string", i);
461 cpos = udev->program_result;
463 while (cpos[0] != '\0' && !isspace(cpos[0]))
465 while (isspace(cpos[0]))
469 err("requested part of result string not found");
472 strlcpy(temp2, cpos, sizeof(temp2));
473 /* %{2+}c copies the whole string from the second part on */
474 if (rest[0] != '+') {
475 cpos = strchr(temp2, ' ');
479 strlcat(string, temp2, maxsize);
480 dbg("substitute part of result string '%s'", temp2);
482 strlcat(string, udev->program_result, maxsize);
483 dbg("substitute result string '%s'", udev->program_result);
488 dbg("missing attribute");
491 if (find_sysfs_attribute(class_dev, sysfs_device, attr, temp2, sizeof(temp2)) != 0) {
492 struct sysfs_device *parent_device;
494 dbg("sysfs attribute '%s' not found, walk up the physical devices", attr);
495 parent_device = sysfs_get_device_parent(sysfs_device);
496 while (parent_device) {
497 dbg("looking at '%s'", parent_device->path);
498 if (find_sysfs_attribute(NULL, parent_device, attr, temp2, sizeof(temp2)) == 0)
500 parent_device = sysfs_get_device_parent(parent_device);
505 /* strip trailing whitespace of sysfs value */
507 while (i > 0 && isspace(temp2[i-1]))
509 replace_untrusted_chars(temp2);
510 strlcat(string, temp2, maxsize);
511 dbg("substitute sysfs value '%s'", temp2);
514 next_free_number = find_free_number(udev, string);
515 if (next_free_number > 0) {
516 sprintf(temp2, "%d", next_free_number);
517 strlcat(string, temp2, maxsize);
523 class_dev_parent = sysfs_get_classdev_parent(class_dev);
524 if (class_dev_parent != NULL) {
525 struct udevice udev_parent;
527 dbg("found parent '%s', get the node name", class_dev_parent->path);
528 udev_init_device(&udev_parent, NULL, NULL, NULL);
529 /* lookup the name in the udev_db with the DEVPATH of the parent */
530 if (udev_db_get_device(&udev_parent, &class_dev_parent->path[strlen(sysfs_path)]) == 0) {
531 strlcat(string, udev_parent.name, maxsize);
532 dbg("substitute parent node name'%s'", udev_parent.name);
534 dbg("parent not found in database");
535 udev_cleanup_device(&udev_parent);
538 case SUBST_TEMP_NODE:
539 if (udev->tmp_node[0] == '\0') {
540 dbg("create temporary device node for callout");
541 snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
542 udev_root, major(udev->devt), minor(udev->devt));
543 udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
544 udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
546 strlcat(string, udev->tmp_node, maxsize);
547 dbg("substitute temporary device node name '%s'", udev->tmp_node);
550 strlcat(string, udev_root, maxsize);
551 dbg("substitute udev_root '%s'", udev_root);
554 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", temp2, sizeof(temp2)) != 0)
556 strlcat(string, temp2, maxsize);
557 dbg("substitute MODALIAS '%s'", temp2);
561 dbg("missing attribute");
567 strlcat(string, pos, maxsize);
568 dbg("substitute env '%s=%s'", attr, pos);
571 err("unknown substitution type=%i", type);
574 /* possibly truncate to format-char specified length */
577 dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
580 strlcat(string, temp, maxsize);
584 static int execute_program_pipe(const char *command, const char *subsystem, char *value, int len)
593 char *argv[(sizeof(arg) / 2) + 1];
597 strlcpy(arg, command, sizeof(arg));
599 if (strchr(arg, ' ')) {
601 while (pos != NULL) {
602 if (pos[0] == '\'') {
603 /* don't separate if in apostrophes */
605 argv[i] = strsep(&pos, "\'");
606 while (pos && pos[0] == ' ')
609 argv[i] = strsep(&pos, " ");
611 dbg("arg[%i] '%s'", i, argv[i]);
615 dbg("execute '%s' with parsed arguments", arg);
618 argv[1] = (char *) subsystem;
620 dbg("execute '%s' with subsystem '%s' argument", arg, argv[1]);
623 retval = pipe(pipefds);
632 /* child dup2 write side of pipe to STDOUT */
633 devnull = open("/dev/null", O_RDWR);
635 dup2(devnull, STDIN_FILENO);
636 dup2(devnull, STDERR_FILENO);
639 dup2(pipefds[1], STDOUT_FILENO);
640 retval = execv(arg, argv);
641 err("exec of program failed");
644 err("fork of '%s' failed", arg);
648 /* parent reads from pipefds[0] */
653 count = read(pipefds[0], value + i, len - i-1);
655 err("read failed with '%s'", strerror(errno));
664 err("result len %d too short", len);
672 waitpid(pid, &status, 0);
674 if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
675 dbg("exec program status 0x%x", status);
681 remove_trailing_char(value, '\n');
682 dbg("result is '%s'", value);
683 replace_untrusted_chars(value);
690 static int match_rule(struct udevice *udev, struct udev_rule *rule,
691 struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
693 struct sysfs_device *parent_device = sysfs_device;
695 if (rule->action_operation != KEY_OP_UNSET) {
696 dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
697 rule->action, udev->action);
698 if (strcmp_pattern(rule->action, udev->action) != 0) {
699 dbg(KEY_ACTION " is not matching");
700 if (rule->action_operation != KEY_OP_NOMATCH)
703 dbg(KEY_ACTION " matches");
704 if (rule->action_operation == KEY_OP_NOMATCH)
707 dbg(KEY_ACTION " key is true");
710 if (rule->kernel_operation != KEY_OP_UNSET) {
711 dbg("check for " KEY_KERNEL " rule->kernel='%s' udev_kernel_name='%s'",
712 rule->kernel, udev->kernel_name);
713 if (strcmp_pattern(rule->kernel, udev->kernel_name) != 0) {
714 dbg(KEY_KERNEL " is not matching");
715 if (rule->kernel_operation != KEY_OP_NOMATCH)
718 dbg(KEY_KERNEL " matches");
719 if (rule->kernel_operation == KEY_OP_NOMATCH)
722 dbg(KEY_KERNEL " key is true");
725 if (rule->subsystem_operation != KEY_OP_UNSET) {
726 dbg("check for " KEY_SUBSYSTEM " rule->subsystem='%s' udev->subsystem='%s'",
727 rule->subsystem, udev->subsystem);
728 if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
729 dbg(KEY_SUBSYSTEM " is not matching");
730 if (rule->subsystem_operation != KEY_OP_NOMATCH)
733 dbg(KEY_SUBSYSTEM " matches");
734 if (rule->subsystem_operation == KEY_OP_NOMATCH)
737 dbg(KEY_SUBSYSTEM " key is true");
740 if (rule->devpath_operation != KEY_OP_UNSET) {
741 dbg("check for " KEY_DEVPATH " rule->devpath='%s' udev->devpath='%s'",
742 rule->devpath, udev->devpath);
743 if (strcmp_pattern(rule->devpath, udev->devpath) != 0) {
744 dbg(KEY_DEVPATH " is not matching");
745 if (rule->devpath_operation != KEY_OP_NOMATCH)
748 dbg(KEY_DEVPATH " matches");
749 if (rule->devpath_operation == KEY_OP_NOMATCH)
752 dbg(KEY_DEVPATH " key is true");
755 if (rule->modalias_operation != KEY_OP_UNSET) {
756 char value[NAME_SIZE];
758 if (find_sysfs_attribute(NULL, sysfs_device, "modalias", value, sizeof(value)) != 0) {
759 dbg(KEY_MODALIAS " value not found");
762 dbg("check for " KEY_MODALIAS " rule->modalias='%s' modalias='%s'",
763 rule->modalias, value);
764 if (strcmp_pattern(rule->modalias, value) != 0) {
765 dbg(KEY_MODALIAS " is not matching");
766 if (rule->modalias_operation != KEY_OP_NOMATCH)
769 dbg(KEY_MODALIAS " matches");
770 if (rule->modalias_operation == KEY_OP_NOMATCH)
773 dbg(KEY_MODALIAS " key is true");
776 if (rule->env_pair_count) {
779 dbg("check for " KEY_ENV " pairs");
780 for (i = 0; i < rule->env_pair_count; i++) {
781 struct key_pair *pair;
784 pair = &rule->env_pair[i];
785 value = getenv(pair->name);
787 dbg(KEY_ENV "{'%s'} is not found", pair->name);
790 if (strcmp_pattern(pair->value, value) != 0) {
791 dbg(KEY_ENV "{'%s'} is not matching", pair->name);
792 if (pair->operation != KEY_OP_NOMATCH)
795 dbg(KEY_ENV "{'%s'} matches", pair->name);
796 if (pair->operation == KEY_OP_NOMATCH)
800 dbg(KEY_ENV " key is true");
803 /* walk up the chain of physical devices and find a match */
805 /* check for matching driver */
806 if (rule->driver_operation != KEY_OP_UNSET) {
807 if (parent_device == NULL) {
808 dbg("device has no sysfs_device");
811 dbg("check for " KEY_DRIVER " rule->driver='%s' sysfs_device->driver_name='%s'",
812 rule->driver, parent_device->driver_name);
813 if (strcmp_pattern(rule->driver, parent_device->driver_name) != 0) {
814 dbg(KEY_DRIVER " is not matching");
815 if (rule->driver_operation != KEY_OP_NOMATCH)
818 dbg(KEY_DRIVER " matches");
819 if (rule->driver_operation == KEY_OP_NOMATCH)
822 dbg(KEY_DRIVER " key is true");
825 /* check for matching bus value */
826 if (rule->bus_operation != KEY_OP_UNSET) {
827 if (parent_device == NULL) {
828 dbg("device has no sysfs_device");
831 dbg("check for " KEY_BUS " rule->bus='%s' sysfs_device->bus='%s'",
832 rule->bus, parent_device->bus);
833 if (strcmp_pattern(rule->bus, parent_device->bus) != 0) {
834 dbg(KEY_BUS " is not matching");
835 if (rule->bus_operation != KEY_OP_NOMATCH)
838 dbg(KEY_BUS " matches");
839 if (rule->bus_operation == KEY_OP_NOMATCH)
842 dbg(KEY_BUS " key is true");
845 /* check for matching bus id */
846 if (rule->id_operation != KEY_OP_UNSET) {
847 if (parent_device == NULL) {
848 dbg("device has no sysfs_device");
851 dbg("check " KEY_ID);
852 if (strcmp_pattern(rule->id, parent_device->bus_id) != 0) {
853 dbg(KEY_ID " is not matching");
854 if (rule->id_operation != KEY_OP_NOMATCH)
857 dbg(KEY_ID " matches");
858 if (rule->id_operation == KEY_OP_NOMATCH)
861 dbg(KEY_ID " key is true");
864 /* check for matching sysfs pairs */
865 if (rule->sysfs_pair_count) {
868 dbg("check " KEY_SYSFS " pairs");
869 for (i = 0; i < rule->sysfs_pair_count; i++) {
870 struct key_pair *pair;
871 char value[VALUE_SIZE];
874 pair = &rule->sysfs_pair[i];
875 if (find_sysfs_attribute(class_dev, parent_device, pair->name, value, sizeof(value)) != 0)
878 /* strip trailing whitespace of value, if not asked to match for it */
879 len = strlen(pair->value);
880 if (len && !isspace(pair->value[len-1])) {
882 while (len > 0 && isspace(value[len-1]))
884 dbg("removed %i trailing whitespace chars from '%s'", strlen(value)-len, value);
887 dbg("compare attribute '%s' value '%s' with '%s'", pair->name, value, pair->value);
888 if (strcmp_pattern(pair->value, value) != 0) {
889 dbg(KEY_SYSFS "{'%s'} is not matching", pair->name);
890 if (pair->operation != KEY_OP_NOMATCH)
893 dbg(KEY_SYSFS "{'%s'} matches", pair->name);
894 if (pair->operation == KEY_OP_NOMATCH)
898 dbg(KEY_SYSFS " keys are true");
901 /* found matching physical device */
904 dbg("try parent sysfs device");
905 parent_device = sysfs_get_device_parent(parent_device);
906 if (parent_device == NULL)
908 dbg("look at sysfs_device->path='%s'", parent_device->path);
909 dbg("look at sysfs_device->bus_id='%s'", parent_device->bus_id);
912 if (rule->import_operation != KEY_OP_UNSET) {
913 char import[PATH_SIZE];
915 strlcpy(import, rule->import, sizeof(import));
916 apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
917 dbg("check for " KEY_IMPORT " import='%s", import);
918 if (import_file_into_env(import) == 0) {
919 dbg(KEY_IMPORT " file '%s' imported", rule->import);
920 if (rule->import_operation == KEY_OP_NOMATCH)
924 dbg(KEY_IMPORT " key is true");
927 /* execute external program */
928 if (rule->program_operation != KEY_OP_UNSET) {
929 char program[PATH_SIZE];
931 strlcpy(program, rule->program, sizeof(program));
932 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
933 dbg("check for " KEY_PROGRAM " program='%s", program);
934 if (execute_program_pipe(program, udev->subsystem,
935 udev->program_result, sizeof(udev->program_result)) != 0) {
936 dbg(KEY_PROGRAM " returned nonzero");
937 if (rule->program_operation != KEY_OP_NOMATCH)
940 dbg(KEY_PROGRAM " returned successful");
941 if (rule->program_operation == KEY_OP_NOMATCH)
944 dbg(KEY_PROGRAM " key is true");
947 /* check for matching result of external program */
948 if (rule->result_operation != KEY_OP_UNSET) {
949 dbg("check for " KEY_RESULT " rule->result='%s', udev->program_result='%s'",
950 rule->result, udev->program_result);
951 if (strcmp_pattern(rule->result, udev->program_result) != 0) {
952 dbg(KEY_RESULT " is not matching");
953 if (rule->result_operation != KEY_OP_NOMATCH)
956 dbg(KEY_RESULT " matches");
957 if (rule->result_operation == KEY_OP_NOMATCH)
960 dbg(KEY_RESULT " key is true");
970 int udev_rules_get_name(struct udevice *udev, struct sysfs_class_device *class_dev)
972 struct sysfs_class_device *class_dev_parent;
973 struct sysfs_device *sysfs_device = NULL;
974 struct udev_rule *rule;
976 dbg("class_dev->name='%s'", class_dev->name);
978 /* Figure out where the "device"-symlink is at. For char devices this will
979 * always be in the class_dev->path. On block devices, only the main block
980 * device will have the device symlink in it's path. All partition devices
981 * need to look at the symlink in its parent directory.
983 class_dev_parent = sysfs_get_classdev_parent(class_dev);
984 if (class_dev_parent != NULL) {
985 dbg("given class device has a parent, use this instead");
986 sysfs_device = sysfs_get_classdev_device(class_dev_parent);
988 sysfs_device = sysfs_get_classdev_device(class_dev);
992 dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
993 sysfs_device->path, sysfs_device->bus_id, sysfs_device->bus);
994 strlcpy(udev->bus_id, sysfs_device->bus_id, sizeof(udev->bus_id));
997 dbg("udev->kernel_name='%s'", udev->kernel_name);
999 /* look for a matching rule to apply */
1000 udev_rules_iter_init();
1002 rule = udev_rules_iter_next();
1006 if (udev->name_set && rule->name_operation != KEY_OP_UNSET) {
1007 dbg("node name already set, rule ignored");
1011 dbg("process rule");
1012 if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
1014 if (rule->ignore_device) {
1015 info("configured rule in '%s[%i]' applied, '%s' is ignored",
1016 rule->config_file, rule->config_line, udev->kernel_name);
1017 udev->ignore_device = 1;
1020 if (rule->ignore_remove) {
1021 udev->ignore_remove = 1;
1022 dbg("remove event should be ignored");
1024 /* apply all_partitions option only at a main block device */
1025 if (rule->partitions && udev->type == DEV_BLOCK && udev->kernel_number[0] == '\0') {
1026 udev->partitions = rule->partitions;
1027 dbg("creation of partition nodes requested");
1030 /* apply permissions */
1031 if (!udev->mode_final && rule->mode != 0000) {
1032 if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
1033 udev->mode_final = 1;
1034 udev->mode = rule->mode;
1035 dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
1037 if (!udev->owner_final && rule->owner[0] != '\0') {
1038 if (rule->owner_operation == KEY_OP_ASSIGN_FINAL)
1039 udev->owner_final = 1;
1040 strlcpy(udev->owner, rule->owner, sizeof(udev->owner));
1041 apply_format(udev, udev->owner, sizeof(udev->owner), class_dev, sysfs_device);
1042 dbg("applied owner='%s' to '%s'", udev->owner, udev->kernel_name);
1044 if (!udev->group_final && rule->group[0] != '\0') {
1045 if (rule->group_operation == KEY_OP_ASSIGN_FINAL)
1046 udev->group_final = 1;
1047 strlcpy(udev->group, rule->group, sizeof(udev->group));
1048 apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
1049 dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
1052 /* collect symlinks */
1053 if (!udev->symlink_final && rule->symlink_operation != KEY_OP_UNSET) {
1054 char temp[PATH_SIZE];
1057 if (rule->symlink_operation == KEY_OP_ASSIGN_FINAL)
1058 udev->symlink_final = 1;
1059 if (rule->symlink_operation == KEY_OP_ASSIGN || rule->symlink_operation == KEY_OP_ASSIGN_FINAL) {
1060 struct name_entry *name_loop;
1061 struct name_entry *temp_loop;
1063 info("reset symlink list");
1064 list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
1065 list_del(&name_loop->node);
1069 if (rule->symlink[0] != '\0') {
1070 info("configured rule in '%s[%i]' applied, added symlink '%s'",
1071 rule->config_file, rule->config_line, rule->symlink);
1072 strlcpy(temp, rule->symlink, sizeof(temp));
1073 apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
1075 /* add multiple symlinks separated by spaces */
1077 next = strchr(temp, ' ');
1080 info("add symlink '%s'", pos);
1081 name_list_add(&udev->symlink_list, pos, 0);
1083 next = strchr(pos, ' ');
1085 info("add symlink '%s'", pos);
1086 name_list_add(&udev->symlink_list, pos, 0);
1090 /* set name, later rules with name set will be ignored */
1091 if (rule->name_operation != KEY_OP_UNSET) {
1093 if (rule->name[0] == '\0') {
1094 info("configured rule in '%s[%i]' applied, node handling for '%s' supressed",
1095 rule->config_file, rule->config_line, udev->kernel_name);
1097 strlcpy(udev->name, rule->name, sizeof(udev->name));
1098 apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
1099 strlcpy(udev->config_file, rule->config_file, sizeof(udev->config_file));
1100 udev->config_line = rule->config_line;
1102 info("configured rule in '%s:%i' applied, '%s' becomes '%s'",
1103 rule->config_file, rule->config_line, udev->kernel_name, rule->name);
1104 if (udev->type != DEV_NET)
1105 dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
1106 udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
1110 if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
1111 char program[PATH_SIZE];
1113 if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
1114 udev->run_final = 1;
1115 if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
1116 struct name_entry *name_loop;
1117 struct name_entry *temp_loop;
1119 info("reset run list");
1120 list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
1121 list_del(&name_loop->node);
1125 if (rule->run[0] != '\0') {
1126 strlcpy(program, rule->run, sizeof(program));
1127 apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
1128 dbg("add run '%s'", program);
1129 name_list_add(&udev->run_list, program, 0);
1133 if (rule->last_rule) {
1134 dbg("last rule to be applied");
1140 if (udev->name[0] == '\0') {
1141 strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
1142 info("no rule found, use kernel name '%s'", udev->name);
1145 if (udev->tmp_node[0] != '\0') {
1146 dbg("removing temporary device node");
1147 unlink_secure(udev->tmp_node);
1148 udev->tmp_node[0] = '\0';
1154 int udev_rules_get_run(struct udevice *udev, struct sysfs_device *sysfs_device)
1156 struct udev_rule *rule;
1158 /* look for a matching rule to apply */
1159 udev_rules_iter_init();
1161 rule = udev_rules_iter_next();
1165 dbg("process rule");
1166 if (rule->run_operation == KEY_OP_UNSET)
1169 if (rule->name_operation != KEY_OP_UNSET || rule->symlink_operation != KEY_OP_UNSET ||
1170 rule->mode != 0000 || rule->owner[0] != '\0' || rule->group[0] != '\0') {
1171 dbg("skip rule that names a device");
1175 if (match_rule(udev, rule, NULL, sysfs_device) == 0) {
1176 if (rule->ignore_device) {
1177 info("configured rule in '%s[%i]' applied, '%s' is ignored",
1178 rule->config_file, rule->config_line, udev->kernel_name);
1179 udev->ignore_device = 1;
1183 if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
1184 char program[PATH_SIZE];
1186 if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
1187 struct name_entry *name_loop;
1188 struct name_entry *temp_loop;
1190 info("reset run list");
1191 list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
1192 list_del(&name_loop->node);
1196 if (rule->run[0] != '\0') {
1197 strlcpy(program, rule->run, sizeof(program));
1198 apply_format(udev, program, sizeof(program), NULL, sysfs_device);
1199 dbg("add run '%s'", program);
1200 name_list_add(&udev->run_list, program, 0);
1202 if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
1206 if (rule->last_rule) {
1207 dbg("last rule to be applied");