22 static struct kobject *sysfs_file_kobj(struct kernfs_node *kn)  in sysfs_file_kobj()  argument
25 	return rcu_dereference(kn->__parent)->priv;  in sysfs_file_kobj()
32 static const struct sysfs_ops *sysfs_file_ops(struct kernfs_node *kn)  in sysfs_file_ops()  argument
34 	struct kobject *kobj = sysfs_file_kobj(kn);  in sysfs_file_ops()
36 	if (kn->flags & KERNFS_LOCKDEP)  in sysfs_file_ops()
37 		lockdep_assert_held(kn);  in sysfs_file_ops()
49 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_seq_show()
50 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_seq_show()
65 	count = ops->show(kobj, of->kn->priv, buf);  in sysfs_kf_seq_show()
86 	const struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_read()
87 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_bin_read()
110 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_read()
111 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_read()
120 	len = ops->show(kobj, of->kn->priv, buf);  in sysfs_kf_read()
136 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_write()
137 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_write()
142 	return ops->store(kobj, of->kn->priv, buf, count);  in sysfs_kf_write()
149 	const struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_write()
150 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_bin_write()
170 	const struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_mmap()
171 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_bin_mmap()
179 	const struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_llseek()
180 	struct kobject *kobj = sysfs_file_kobj(of->kn);  in sysfs_kf_bin_llseek()
190 	const struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_open()
200 	struct kernfs_node *kn = kobj->sd, *tmp;  in sysfs_notify()  local
202 	if (kn && dir)  in sysfs_notify()
203 		kn = kernfs_find_and_get(kn, dir);  in sysfs_notify()
205 		kernfs_get(kn);  in sysfs_notify()
207 	if (kn && attr) {  in sysfs_notify()
208 		tmp = kernfs_find_and_get(kn, attr);  in sysfs_notify()
209 		kernfs_put(kn);  in sysfs_notify()
210 		kn = tmp;  in sysfs_notify()
213 	if (kn) {  in sysfs_notify()
214 		kernfs_notify(kn);  in sysfs_notify()
215 		kernfs_put(kn);  in sysfs_notify()
281 	struct kernfs_node *kn;  in sysfs_add_file_mode_ns()  local
313 	kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid,  in sysfs_add_file_mode_ns()
315 	if (IS_ERR(kn)) {  in sysfs_add_file_mode_ns()
316 		if (PTR_ERR(kn) == -EEXIST)  in sysfs_add_file_mode_ns()
318 		return PTR_ERR(kn);  in sysfs_add_file_mode_ns()
330 	struct kernfs_node *kn;  in sysfs_add_bin_file_mode_ns()  local
348 	kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid,  in sysfs_add_bin_file_mode_ns()
350 	if (IS_ERR(kn)) {  in sysfs_add_bin_file_mode_ns()
351 		if (PTR_ERR(kn) == -EEXIST)  in sysfs_add_bin_file_mode_ns()
353 		return PTR_ERR(kn);  in sysfs_add_bin_file_mode_ns()
435 	struct kernfs_node *kn;  in sysfs_chmod_file()  local
439 	kn = kernfs_find_and_get(kobj->sd, attr->name);  in sysfs_chmod_file()
440 	if (!kn)  in sysfs_chmod_file()
443 	newattrs.ia_mode = (mode & S_IALLUGO) | (kn->mode & ~S_IALLUGO);  in sysfs_chmod_file()
446 	rc = kernfs_setattr(kn, &newattrs);  in sysfs_chmod_file()
448 	kernfs_put(kn);  in sysfs_chmod_file()
466 	struct kernfs_node *kn;  in sysfs_break_active_protection()  local
469 	kn = kernfs_find_and_get(kobj->sd, attr->name);  in sysfs_break_active_protection()
470 	if (kn)  in sysfs_break_active_protection()
471 		kernfs_break_active_protection(kn);  in sysfs_break_active_protection()
474 	return kn;  in sysfs_break_active_protection()
489 void sysfs_unbreak_active_protection(struct kernfs_node *kn)  in sysfs_unbreak_active_protection()  argument
491 	struct kobject *kobj = sysfs_file_kobj(kn);  in sysfs_unbreak_active_protection()
493 	kernfs_unbreak_active_protection(kn);  in sysfs_unbreak_active_protection()
494 	kernfs_put(kn);  in sysfs_unbreak_active_protection()
526 	struct kernfs_node *kn;  in sysfs_remove_file_self()  local
529 	kn = kernfs_find_and_get(parent, attr->name);  in sysfs_remove_file_self()
530 	if (WARN_ON_ONCE(!kn))  in sysfs_remove_file_self()
533 	ret = kernfs_remove_self(kn);  in sysfs_remove_file_self()
535 	kernfs_put(kn);  in sysfs_remove_file_self()
606 static int internal_change_owner(struct kernfs_node *kn, kuid_t kuid,  in internal_change_owner()  argument
614 	return kernfs_setattr(kn, &newattrs);  in internal_change_owner()
634 	struct kernfs_node *kn = NULL;  in sysfs_link_change_owner()  local
641 	kn = kernfs_find_and_get_ns(kobj->sd, name, targ->sd->ns);  in sysfs_link_change_owner()
642 	if (!kn)  in sysfs_link_change_owner()
646 	if (kernfs_type(kn) != KERNFS_LINK)  in sysfs_link_change_owner()
648 	if (kn->symlink.target_kn->priv != targ)  in sysfs_link_change_owner()
651 	error = internal_change_owner(kn, kuid, kgid);  in sysfs_link_change_owner()
654 	kernfs_put(kn);  in sysfs_link_change_owner()
673 	struct kernfs_node *kn;  in sysfs_file_change_owner()  local
682 	kn = kernfs_find_and_get(kobj->sd, name);  in sysfs_file_change_owner()
683 	if (!kn)  in sysfs_file_change_owner()
686 	error = internal_change_owner(kn, kuid, kgid);  in sysfs_file_change_owner()
688 	kernfs_put(kn);  in sysfs_file_change_owner()