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-rw-r--r--fs/sysfs/group.c28
1 files changed, 25 insertions, 3 deletions
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 5afe0e7ff7cd..fbb117757c52 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -426,6 +426,25 @@ int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
struct kobject *target_kobj,
const char *target_name)
{
+ return compat_only_sysfs_link_entry_to_kobj(kobj, target_kobj,
+ target_name, NULL);
+}
+EXPORT_SYMBOL_GPL(__compat_only_sysfs_link_entry_to_kobj);
+
+/**
+ * compat_only_sysfs_link_entry_to_kobj - add a symlink to a kobject pointing
+ * to a group or an attribute
+ * @kobj: The kobject containing the group.
+ * @target_kobj: The target kobject.
+ * @target_name: The name of the target group or attribute.
+ * @symlink_name: The name of the symlink file (target_name will be
+ * considered if symlink_name is NULL).
+ */
+int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
+ struct kobject *target_kobj,
+ const char *target_name,
+ const char *symlink_name)
+{
struct kernfs_node *target;
struct kernfs_node *entry;
struct kernfs_node *link;
@@ -449,15 +468,18 @@ int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
return -ENOENT;
}
- link = kernfs_create_link(kobj->sd, target_name, entry);
+ if (!symlink_name)
+ symlink_name = target_name;
+
+ link = kernfs_create_link(kobj->sd, symlink_name, entry);
if (PTR_ERR(link) == -EEXIST)
- sysfs_warn_dup(kobj->sd, target_name);
+ sysfs_warn_dup(kobj->sd, symlink_name);
kernfs_put(entry);
kernfs_put(target);
return PTR_ERR_OR_ZERO(link);
}
-EXPORT_SYMBOL_GPL(__compat_only_sysfs_link_entry_to_kobj);
+EXPORT_SYMBOL_GPL(compat_only_sysfs_link_entry_to_kobj);
static int sysfs_group_attrs_change_owner(struct kernfs_node *grp_kn,
const struct attribute_group *grp,