+ result = snprintf(dname, MAX_SYSFS_PATH_LEN,
+ "/sys/block/%s/md/", sra->sys_name);
+ if (result < 0 || result >= MAX_SYSFS_PATH_LEN)
+ return -1;
+
+ result = snprintf(fname, MAX_SYSFS_PATH_LEN,
+ "%s/%s", dname, ent->name);
+ if (result < 0 || result >= MAX_SYSFS_PATH_LEN)
+ return -1;
+
+ if (realpath(fname, resolved_path) == NULL ||
+ realpath(dname, resolved_dir) == NULL)
+ return -1;
+
+ if (strncmp(resolved_dir, resolved_path,
+ strnlen(resolved_dir, PATH_MAX)) != 0)
+ return -1;
+
+ return 0;
+}
+
+static struct dev_sysfs_rule *sysfs_rules;
+
+void sysfs_rules_apply(char *devnm, struct mdinfo *dev)
+{
+ struct dev_sysfs_rule *rules = sysfs_rules;
+
+ while (rules) {
+ struct sysfs_entry *ent = rules->entry;
+ int match = 0;
+
+ if (!rules->uuid_set) {
+ if (rules->devname)
+ match = strcmp(devnm, rules->devname) == 0;
+ } else {
+ match = memcmp(dev->uuid, rules->uuid,
+ sizeof(int[4])) == 0;
+ }
+
+ while (match && ent) {
+ if (sysfs_rules_apply_check(dev, ent) < 0)
+ pr_err("SYSFS: failed to write '%s' to '%s'\n",
+ ent->value, ent->name);
+ else
+ sysfs_set_str(dev, NULL, ent->name, ent->value);
+ ent = ent->next;
+ }
+ rules = rules->next;