dbg("look for device attribute '%s'", name);
if (class_dev) {
+ dbg("look for class attribute '%s/%s'", class_dev->path, name);
tmpattr = sysfs_get_classdev_attr(class_dev, name);
if (tmpattr)
goto attr_found;
}
if (sysfs_device) {
+ dbg("look for devices attribute '%s/%s'", sysfs_device->path, name);
tmpattr = sysfs_get_device_attr(sysfs_device, name);
if (tmpattr)
goto attr_found;
}
-
return -1;
attr_found:
{
char temp[PATH_SIZE];
char temp2[PATH_SIZE];
- char *tail, *pos, *cpos, *attr, *rest;
+ char *head, *tail, *cpos, *attr, *rest;
int len;
int i;
- char c;
unsigned int next_free_number;
struct sysfs_class_device *class_dev_parent;
-
- pos = string;
+ enum subst_type {
+ SUBST_UNKNOWN,
+ SUBST_DEVPATH,
+ SUBST_ID,
+ SUBST_KERNEL_NUMBER,
+ SUBST_KERNEL_NAME,
+ SUBST_MAJOR,
+ SUBST_MINOR,
+ SUBST_RESULT,
+ SUBST_SYSFS,
+ SUBST_ENUM,
+ SUBST_PARENT,
+ SUBST_TEMP_NODE,
+ SUBST_ROOT,
+ SUBST_MODALIAS,
+ };
+ static const struct subst_map {
+ char *name;
+ char fmt;
+ enum subst_type type;
+ } map[] = {
+ { .name = "devpath", .fmt = 'p', .type = SUBST_DEVPATH },
+ { .name = "id", .fmt = 'b', .type = SUBST_ID },
+ { .name = "number", .fmt = 'n', .type = SUBST_KERNEL_NUMBER },
+ { .name = "kernel", .fmt = 'k', .type = SUBST_KERNEL_NAME },
+ { .name = "major", .fmt = 'M', .type = SUBST_MAJOR },
+ { .name = "minor", .fmt = 'm', .type = SUBST_MINOR },
+ { .name = "result", .fmt = 'c', .type = SUBST_RESULT },
+ { .name = "sysfs", .fmt = 's', .type = SUBST_SYSFS },
+ { .name = "enum", .fmt = 'e', .type = SUBST_ENUM },
+ { .name = "parent", .fmt = 'P', .type = SUBST_PARENT },
+ { .name = "tempnode", .fmt = 'N', .type = SUBST_TEMP_NODE },
+ { .name = "root", .fmt = 'r', .type = SUBST_ROOT },
+ { .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
+ {}
+ };
+ enum subst_type type;
+ const struct subst_map *subst;
+
+ head = string;
while (1) {
- pos = strchr(pos, '%');
- if (pos == NULL)
- break;
-
- pos[0] = '\0';
- tail = pos+1;
- len = get_format_len(&tail);
- c = tail[0];
- strlcpy(temp, tail+1, sizeof(temp));
- tail = temp;
- dbg("format=%c, string='%s', tail='%s'",c , string, tail);
+ len = -1;
+ while (head[0] != '\0') {
+ if (head[0] == '$') {
+ /* substitute named variable */
+ if (head[1] == '\0')
+ break;
+ if (head[1] == '$') {
+ strlcpy(temp, head+2, sizeof(temp));
+ strlcpy(head+1, temp, maxsize);
+ head++;
+ continue;
+ }
+ head[0] = '\0';
+ for (subst = map; subst->name; subst++) {
+ if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
+ type = subst->type;
+ tail = head + strlen(subst->name)+1;
+ dbg("will substitute format name '%s'", subst->name);
+ goto found;
+ }
+ }
+ }
+ else if (head[0] == '%') {
+ /* substitute format char */
+ if (head[1] == '\0')
+ break;
+ if (head[1] == '%') {
+ strlcpy(temp, head+2, sizeof(temp));
+ strlcpy(head+1, temp, maxsize);
+ head++;
+ continue;
+ }
+ head[0] = '\0';
+ tail = head+1;
+ len = get_format_len(&tail);
+ for (subst = map; subst->name; subst++) {
+ if (tail[0] == subst->fmt) {
+ type = subst->type;
+ tail++;
+ dbg("will substitute format char '%c'", subst->fmt);
+ goto found;
+ }
+ }
+ }
+ head++;
+ }
+ break;
+found:
attr = get_format_attribute(&tail);
+ strlcpy(temp, tail, sizeof(temp));
+ dbg("format=%i, string='%s', tail='%s', class_dev=%p, sysfs_dev=%p",
+ type ,string, tail, class_dev, sysfs_device);
- switch (c) {
- case 'p':
+ switch (type) {
+ case SUBST_DEVPATH:
strlcat(string, udev->devpath, maxsize);
- dbg("substitute kernel name '%s'", udev->kernel_name);
+ dbg("substitute devpath '%s'", udev->devpath);
break;
- case 'b':
+ case SUBST_ID:
strlcat(string, udev->bus_id, maxsize);
dbg("substitute bus_id '%s'", udev->bus_id);
break;
- case 'k':
+ case SUBST_KERNEL_NAME:
strlcat(string, udev->kernel_name, maxsize);
dbg("substitute kernel name '%s'", udev->kernel_name);
break;
- case 'n':
+ case SUBST_KERNEL_NUMBER:
strlcat(string, udev->kernel_number, maxsize);
dbg("substitute kernel number '%s'", udev->kernel_number);
- break;
- case 'm':
- sprintf(temp2, "%d", minor(udev->devt));
- strlcat(string, temp2, maxsize);
- dbg("substitute minor number '%s'", temp2);
break;
- case 'M':
+ case SUBST_MAJOR:
sprintf(temp2, "%d", major(udev->devt));
strlcat(string, temp2, maxsize);
dbg("substitute major number '%s'", temp2);
break;
- case 'c':
+ case SUBST_MINOR:
+ sprintf(temp2, "%d", minor(udev->devt));
+ strlcat(string, temp2, maxsize);
+ dbg("substitute minor number '%s'", temp2);
+ break;
+ case SUBST_RESULT:
if (udev->program_result[0] == '\0')
break;
/* get part part of the result string */
dbg("substitute result string '%s'", udev->program_result);
}
break;
- case 's':
+ case SUBST_SYSFS:
if (attr == NULL) {
dbg("missing attribute");
break;
strlcat(string, temp2, maxsize);
dbg("substitute sysfs value '%s'", temp2);
break;
- case '%':
- strlcat(string, "%", maxsize);
- pos++;
- break;
- case 'e':
+ case SUBST_ENUM:
next_free_number = find_free_number(udev, string);
if (next_free_number > 0) {
sprintf(temp2, "%d", next_free_number);
strlcat(string, temp2, maxsize);
}
break;
- case 'P':
+ case SUBST_PARENT:
if (!class_dev)
break;
class_dev_parent = sysfs_get_classdev_parent(class_dev);
udev_cleanup_device(&udev_parent);
}
break;
- case 'N':
+ case SUBST_TEMP_NODE:
if (udev->tmp_node[0] == '\0') {
dbg("create temporary device node for callout");
snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
strlcat(string, udev->tmp_node, maxsize);
dbg("substitute temporary device node name '%s'", udev->tmp_node);
break;
- case 'r':
+ case SUBST_ROOT:
strlcat(string, udev_root, maxsize);
dbg("substitute udev_root '%s'", udev_root);
break;
+ case SUBST_MODALIAS:
+ if (find_sysfs_attribute(NULL, sysfs_device, "modalias", temp2, sizeof(temp2)) != 0)
+ break;
+ strlcat(string, temp2, maxsize);
+ dbg("substitute MODALIAS '%s'", temp2);
+ break;
default:
- err("unknown substitution type '%%%c'", c);
+ err("unknown substitution type=%i", type);
break;
}
- /* truncate to specified length */
- if (len > 0)
- pos[len] = '\0';
+ /* possibly truncate to format-char specified length */
+ if (len != -1) {
+ head[len] = '\0';
+ dbg("truncate to %i chars, subtitution string becomes '%s'", len, head);
+ }
- strlcat(string, tail, maxsize);
+ strlcat(string, temp, maxsize);
}
}
dbg(KEY_SUBSYSTEM " key is true");
}
+ if (rule->devpath_operation != KEY_OP_UNSET) {
+ dbg("check for " KEY_DEVPATH " rule->devpath='%s' udev->devpath='%s'",
+ rule->devpath, udev->devpath);
+ if (strcmp_pattern(rule->devpath, udev->devpath) != 0) {
+ dbg(KEY_DEVPATH " is not matching");
+ if (rule->devpath_operation != KEY_OP_NOMATCH)
+ goto exit;
+ } else {
+ dbg(KEY_DEVPATH " matches");
+ if (rule->devpath_operation == KEY_OP_NOMATCH)
+ goto exit;
+ }
+ dbg(KEY_DEVPATH " key is true");
+ }
+
+ if (rule->modalias_operation != KEY_OP_UNSET) {
+ char value[NAME_SIZE];
+
+ if (find_sysfs_attribute(NULL, sysfs_device, "modalias", value, sizeof(value)) != 0) {
+ dbg(KEY_MODALIAS " value not found");
+ goto exit;
+ }
+ dbg("check for " KEY_MODALIAS " rule->modalias='%s' modalias='%s'",
+ rule->modalias, value);
+ if (strcmp_pattern(rule->modalias, value) != 0) {
+ dbg(KEY_MODALIAS " is not matching");
+ if (rule->modalias_operation != KEY_OP_NOMATCH)
+ goto exit;
+ } else {
+ dbg(KEY_MODALIAS " matches");
+ if (rule->modalias_operation == KEY_OP_NOMATCH)
+ goto exit;
+ }
+ dbg(KEY_MODALIAS " key is true");
+ }
+
if (rule->env_pair_count) {
int i;
dbg("udev->kernel_name='%s'", udev->kernel_name);
/* look for a matching rule to apply */
- list_for_each_entry(rule, &udev_rule_list, node) {
+ udev_rules_iter_init();
+ while (1) {
+ rule = udev_rules_iter_next();
+ if (rule == NULL)
+ break;
+
+ if (udev->name_set && rule->name_operation != KEY_OP_UNSET) {
+ dbg("node name already set, rule ignored");
+ continue;
+ }
+
dbg("process rule");
if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
- if (udev->name[0] != '\0' && rule->name[0] != '\0') {
- dbg("node name already set, rule ignored");
- continue;
- }
-
/* apply options */
if (rule->ignore_device) {
info("configured rule in '%s[%i]' applied, '%s' is ignored",
}
/* apply permissions */
- if (rule->mode != 0000) {
+ if (!udev->mode_final && rule->mode != 0000) {
+ if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
+ udev->mode_final = 1;
udev->mode = rule->mode;
dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
}
- if (rule->owner[0] != '\0') {
+ if (!udev->owner_final && rule->owner[0] != '\0') {
+ if (rule->owner_operation == KEY_OP_ASSIGN_FINAL)
+ udev->owner_final = 1;
strlcpy(udev->owner, rule->owner, sizeof(udev->owner));
apply_format(udev, udev->owner, sizeof(udev->owner), class_dev, sysfs_device);
dbg("applied owner='%s' to '%s'", udev->owner, udev->kernel_name);
}
- if (rule->group[0] != '\0') {
+ if (!udev->group_final && rule->group[0] != '\0') {
+ if (rule->group_operation == KEY_OP_ASSIGN_FINAL)
+ udev->group_final = 1;
strlcpy(udev->group, rule->group, sizeof(udev->group));
apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
}
/* collect symlinks */
- if (rule->symlink[0] != '\0') {
+ if (!udev->symlink_final && rule->symlink_operation != KEY_OP_UNSET) {
char temp[PATH_SIZE];
char *pos, *next;
- info("configured rule in '%s[%i]' applied, added symlink '%s'",
- rule->config_file, rule->config_line, rule->symlink);
- strlcpy(temp, rule->symlink, sizeof(temp));
- apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
-
- /* add multiple symlinks separated by spaces */
- pos = temp;
- next = strchr(temp, ' ');
- while (next) {
- next[0] = '\0';
+ if (rule->symlink_operation == KEY_OP_ASSIGN_FINAL)
+ udev->symlink_final = 1;
+ if (rule->symlink_operation == KEY_OP_ASSIGN || rule->symlink_operation == KEY_OP_ASSIGN_FINAL) {
+ struct name_entry *name_loop;
+ struct name_entry *temp_loop;
+
+ info("reset symlink list");
+ list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
+ list_del(&name_loop->node);
+ free(name_loop);
+ }
+ }
+ if (rule->symlink[0] != '\0') {
+ info("configured rule in '%s[%i]' applied, added symlink '%s'",
+ rule->config_file, rule->config_line, rule->symlink);
+ strlcpy(temp, rule->symlink, sizeof(temp));
+ apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
+
+ /* add multiple symlinks separated by spaces */
+ pos = temp;
+ next = strchr(temp, ' ');
+ while (next) {
+ next[0] = '\0';
+ info("add symlink '%s'", pos);
+ name_list_add(&udev->symlink_list, pos, 0);
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
info("add symlink '%s'", pos);
name_list_add(&udev->symlink_list, pos, 0);
- pos = &next[1];
- next = strchr(pos, ' ');
}
- info("add symlink '%s'", pos);
- name_list_add(&udev->symlink_list, pos, 0);
}
/* set name, later rules with name set will be ignored */
- if (rule->name[0] != '\0') {
- info("configured rule in '%s[%i]' applied, '%s' becomes '%s'",
- rule->config_file, rule->config_line, udev->kernel_name, rule->name);
-
- strlcpy(udev->name, rule->name, sizeof(udev->name));
- apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
- strlcpy(udev->config_file, rule->config_file, sizeof(udev->config_file));
- udev->config_line = rule->config_line;
-
- if (udev->type != DEV_NET)
- dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
- udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
+ if (rule->name_operation != KEY_OP_UNSET) {
+ udev->name_set = 1;
+ if (rule->name[0] == '\0') {
+ info("configured rule in '%s[%i]' applied, node handling for '%s' supressed",
+ rule->config_file, rule->config_line, udev->kernel_name);
+ } else {
+ strlcpy(udev->name, rule->name, sizeof(udev->name));
+ apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
+ strlcpy(udev->config_file, rule->config_file, sizeof(udev->config_file));
+ udev->config_line = rule->config_line;
+
+ info("configured rule in '%s:%i' applied, '%s' becomes '%s'",
+ rule->config_file, rule->config_line, udev->kernel_name, rule->name);
+ if (udev->type != DEV_NET)
+ dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
+ udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
+ }
}
- if (rule->run[0] != '\0') {
+ if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
char program[PATH_SIZE];
- strlcpy(program, rule->run, sizeof(program));
- apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
- dbg("add run '%s'", program);
- name_list_add(&udev->run_list, program, 0);
+ if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
+ udev->run_final = 1;
+ if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
+ struct name_entry *name_loop;
+ struct name_entry *temp_loop;
+
+ info("reset run list");
+ list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
+ list_del(&name_loop->node);
+ free(name_loop);
+ }
+ }
+ if (rule->run[0] != '\0') {
+ strlcpy(program, rule->run, sizeof(program));
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
+ }
}
if (rule->last_rule) {
return 0;
}
-int udev_rules_get_run(struct udevice *udev)
+int udev_rules_get_run(struct udevice *udev, struct sysfs_device *sysfs_device)
{
struct udev_rule *rule;
- char program[PATH_SIZE];
/* look for a matching rule to apply */
- list_for_each_entry(rule, &udev_rule_list, node) {
- dbg("process rule");
+ udev_rules_iter_init();
+ while (1) {
+ rule = udev_rules_iter_next();
+ if (rule == NULL)
+ break;
- if (rule->run[0] == '\0')
+ dbg("process rule");
+ if (rule->run_operation == KEY_OP_UNSET)
continue;
- if (rule->name[0] != '\0' || rule->symlink[0] != '\0' ||
+ if (rule->name_operation != KEY_OP_UNSET || rule->symlink_operation != KEY_OP_UNSET ||
rule->mode != 0000 || rule->owner[0] != '\0' || rule->group[0] != '\0') {
dbg("skip rule that names a device");
continue;
}
- if (rule->action_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
- rule->action, udev->action);
- if (strcmp_pattern(rule->action, udev->action) != 0) {
- dbg(KEY_ACTION " is not matching");
- if (rule->action_operation != KEY_OP_NOMATCH)
- continue;
- } else {
- dbg(KEY_ACTION " matches");
- if (rule->action_operation == KEY_OP_NOMATCH)
- continue;
- }
- dbg(KEY_ACTION " key is true");
- }
-
- if (rule->kernel_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_KERNEL " rule->kernel='%s' udev->kernel_name='%s'",
- rule->kernel, udev->kernel_name);
- if (strcmp_pattern(rule->kernel, udev->kernel_name) != 0) {
- dbg(KEY_KERNEL " is not matching");
- if (rule->kernel_operation != KEY_OP_NOMATCH)
- continue;
- } else {
- dbg(KEY_KERNEL " matches");
- if (rule->kernel_operation == KEY_OP_NOMATCH)
- continue;
- }
- dbg(KEY_KERNEL " key is true");
- }
-
- if (rule->subsystem_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_SUBSYSTEM " rule->subsystem='%s' udev->subsystem='%s'",
- rule->subsystem, udev->subsystem);
- if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
- dbg(KEY_SUBSYSTEM " is not matching");
- if (rule->subsystem_operation != KEY_OP_NOMATCH)
- continue;
- } else {
- dbg(KEY_SUBSYSTEM " matches");
- if (rule->subsystem_operation == KEY_OP_NOMATCH)
- continue;
+ if (match_rule(udev, rule, NULL, sysfs_device) == 0) {
+ if (rule->ignore_device) {
+ info("configured rule in '%s[%i]' applied, '%s' is ignored",
+ rule->config_file, rule->config_line, udev->kernel_name);
+ udev->ignore_device = 1;
+ return 0;
}
- dbg(KEY_SUBSYSTEM " key is true");
- }
- if (rule->env_pair_count) {
- int i;
+ if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
+ char program[PATH_SIZE];
- dbg("check for " KEY_ENV " pairs");
- for (i = 0; i < rule->env_pair_count; i++) {
- struct key_pair *pair;
- const char *value;
+ if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
+ struct name_entry *name_loop;
+ struct name_entry *temp_loop;
- pair = &rule->env_pair[i];
- value = getenv(pair->name);
- if (!value) {
- dbg(KEY_ENV "{'%s'} is not found", pair->name);
- continue;
+ info("reset run list");
+ list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
+ list_del(&name_loop->node);
+ free(name_loop);
+ }
}
- if (strcmp_pattern(pair->value, value) != 0) {
- dbg(KEY_ENV "{'%s'} is not matching", pair->name);
- if (pair->operation != KEY_OP_NOMATCH)
- continue;
- } else {
- dbg(KEY_ENV "{'%s'} matches", pair->name);
- if (pair->operation == KEY_OP_NOMATCH)
- continue;
+ if (rule->run[0] != '\0') {
+ strlcpy(program, rule->run, sizeof(program));
+ apply_format(udev, program, sizeof(program), NULL, sysfs_device);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
}
+ if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
+ break;
}
- dbg(KEY_ENV " key is true");
- }
-
- /* rule matches */
-
- if (rule->ignore_device) {
- info("configured rule in '%s[%i]' applied, '%s' is ignored",
- rule->config_file, rule->config_line, udev->kernel_name);
- udev->ignore_device = 1;
- return 0;
- }
- strlcpy(program, rule->run, sizeof(program));
- apply_format(udev, program, sizeof(program), NULL, NULL);
- dbg("add run '%s'", program);
- name_list_add(&udev->run_list, program, 0);
-
- if (rule->last_rule) {
- dbg("last rule to be applied");
- break;
+ if (rule->last_rule) {
+ dbg("last rule to be applied");
+ break;
+ }
}
}
~ianmdlvl / elogind.git / blobdiff