kobj_type currently uses a list of individual attributes to store
default attributes. Attribute groups are more flexible than a list of
attributes because groups provide support for attribute visibility. So,
add support for default attribute groups to kobj_type.
In future patches, the existing uses of kobj_type’s attribute list will
be converted to attribute groups. When that is complete, kobj_type’s
attribute list, “default_attrs”, will be removed.
Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
struct kobj_type {
void (*release)(struct kobject *kobj);
const struct sysfs_ops *sysfs_ops;
- struct attribute **default_attrs;
+ struct attribute **default_attrs; /* use default_groups instead */
+ const struct attribute_group **default_groups;
const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
const void *(*namespace)(struct kobject *kobj);
void (*get_ownership)(struct kobject *kobj, kuid_t *uid, kgid_t *gid);
static int create_dir(struct kobject *kobj)
{
+ const struct kobj_type *ktype = get_ktype(kobj);
const struct kobj_ns_type_operations *ops;
int error;
return error;
}
+ if (ktype) {
+ error = sysfs_create_groups(kobj, ktype->default_groups);
+ if (error) {
+ sysfs_remove_dir(kobj);
+ return error;
+ }
+ }
+
/*
* @kobj->sd may be deleted by an ancestor going away. Hold an
* extra reference so that it stays until @kobj is gone.
void kobject_del(struct kobject *kobj)
{
struct kernfs_node *sd;
+ const struct kobj_type *ktype = get_ktype(kobj);
if (!kobj)
return;
sd = kobj->sd;
+
+ if (ktype)
+ sysfs_remove_groups(kobj, ktype->default_groups);
+
sysfs_remove_dir(kobj);
sysfs_put(sd);