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Commit 672d82c1 authored by Eric W. Biederman's avatar Eric W. Biederman Committed by David S. Miller
Browse files

class: Implement support for class attrs in tagged sysfs directories. 



Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 487505c2

drivers/base/class.c

+15 −2
Original line number Diff line number Diff line
@@ -47,6 +47,18 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr, 
	return ret;

}



static const void *class_attr_namespace(struct kobject *kobj,

					const struct attribute *attr)

{

	struct class_attribute *class_attr = to_class_attr(attr);

	struct subsys_private *cp = to_subsys_private(kobj);

	const void *ns = NULL;



	if (class_attr->namespace)

		ns = class_attr->namespace(cp->class, class_attr);

	return ns;

}



static void class_release(struct kobject *kobj)

{

	struct subsys_private *cp = to_subsys_private(kobj);
@@ -74,6 +86,7 @@ static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject 
static const struct sysfs_ops class_sysfs_ops = {

	.show	   = class_attr_show,

	.store	   = class_attr_store,

	.namespace = class_attr_namespace,

};



static struct kobj_type class_ktype = {

include/linux/device.h

+2 −0
Original line number Diff line number Diff line
@@ -350,6 +350,8 @@ struct class_attribute { 
			char *buf);

	ssize_t (*store)(struct class *class, struct class_attribute *attr,

			const char *buf, size_t count);

	const void *(*namespace)(struct class *class,

				 const struct class_attribute *attr);

};



#define CLASS_ATTR(_name, _mode, _show, _store)			\