26 static const struct sysfs_ops *sysfs_file_ops(struct kernfs_node *kn)  in sysfs_file_ops()  argument
28 	struct kobject *kobj = kn->parent->priv;  in sysfs_file_ops()
30 	if (kn->flags & KERNFS_LOCKDEP)  in sysfs_file_ops()
31 		lockdep_assert_held(kn);  in sysfs_file_ops()
43 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_seq_show()
44 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_seq_show()
59 	count = ops->show(kobj, of->kn->priv, buf);  in sysfs_kf_seq_show()
80 	struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_read()
81 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_bin_read()
104 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_read()
105 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_read()
114 	len = ops->show(kobj, of->kn->priv, buf);  in sysfs_kf_read()
130 	const struct sysfs_ops *ops = sysfs_file_ops(of->kn);  in sysfs_kf_write()
131 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_write()
136 	return ops->store(kobj, of->kn->priv, buf, count);  in sysfs_kf_write()
143 	struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_write()
144 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_bin_write()
164 	struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_mmap()
165 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_bin_mmap()
173 	struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_llseek()
174 	struct kobject *kobj = of->kn->parent->priv;  in sysfs_kf_bin_llseek()
184 	struct bin_attribute *battr = of->kn->priv;  in sysfs_kf_bin_open()
194 	struct kernfs_node *kn = kobj->sd, *tmp;  in sysfs_notify()  local
196 	if (kn && dir)  in sysfs_notify()
197 		kn = kernfs_find_and_get(kn, dir);  in sysfs_notify()
199 		kernfs_get(kn);  in sysfs_notify()
201 	if (kn && attr) {  in sysfs_notify()
202 		tmp = kernfs_find_and_get(kn, attr);  in sysfs_notify()
203 		kernfs_put(kn);  in sysfs_notify()
204 		kn = tmp;  in sysfs_notify()
207 	if (kn) {  in sysfs_notify()
208 		kernfs_notify(kn);  in sysfs_notify()
209 		kernfs_put(kn);  in sysfs_notify()
275 	struct kernfs_node *kn;  in sysfs_add_file_mode_ns()  local
307 	kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid,  in sysfs_add_file_mode_ns()
309 	if (IS_ERR(kn)) {  in sysfs_add_file_mode_ns()
310 		if (PTR_ERR(kn) == -EEXIST)  in sysfs_add_file_mode_ns()
312 		return PTR_ERR(kn);  in sysfs_add_file_mode_ns()
324 	struct kernfs_node *kn;  in sysfs_add_bin_file_mode_ns()  local
342 	kn = __kernfs_create_file(parent, attr->name, mode & 0777, uid, gid,  in sysfs_add_bin_file_mode_ns()
344 	if (IS_ERR(kn)) {  in sysfs_add_bin_file_mode_ns()
345 		if (PTR_ERR(kn) == -EEXIST)  in sysfs_add_bin_file_mode_ns()
347 		return PTR_ERR(kn);  in sysfs_add_bin_file_mode_ns()
429 	struct kernfs_node *kn;  in sysfs_chmod_file()  local
433 	kn = kernfs_find_and_get(kobj->sd, attr->name);  in sysfs_chmod_file()
434 	if (!kn)  in sysfs_chmod_file()
437 	newattrs.ia_mode = (mode & S_IALLUGO) | (kn->mode & ~S_IALLUGO);  in sysfs_chmod_file()
440 	rc = kernfs_setattr(kn, &newattrs);  in sysfs_chmod_file()
442 	kernfs_put(kn);  in sysfs_chmod_file()
460 	struct kernfs_node *kn;  in sysfs_break_active_protection()  local
463 	kn = kernfs_find_and_get(kobj->sd, attr->name);  in sysfs_break_active_protection()
464 	if (kn)  in sysfs_break_active_protection()
465 		kernfs_break_active_protection(kn);  in sysfs_break_active_protection()
468 	return kn;  in sysfs_break_active_protection()
483 void sysfs_unbreak_active_protection(struct kernfs_node *kn)  in sysfs_unbreak_active_protection()  argument
485 	struct kobject *kobj = kn->parent->priv;  in sysfs_unbreak_active_protection()
487 	kernfs_unbreak_active_protection(kn);  in sysfs_unbreak_active_protection()
488 	kernfs_put(kn);  in sysfs_unbreak_active_protection()
520 	struct kernfs_node *kn;  in sysfs_remove_file_self()  local
523 	kn = kernfs_find_and_get(parent, attr->name);  in sysfs_remove_file_self()
524 	if (WARN_ON_ONCE(!kn))  in sysfs_remove_file_self()
527 	ret = kernfs_remove_self(kn);  in sysfs_remove_file_self()
529 	kernfs_put(kn);  in sysfs_remove_file_self()
600 static int internal_change_owner(struct kernfs_node *kn, kuid_t kuid,  in internal_change_owner()  argument
608 	return kernfs_setattr(kn, &newattrs);  in internal_change_owner()
628 	struct kernfs_node *kn = NULL;  in sysfs_link_change_owner()  local
635 	kn = kernfs_find_and_get_ns(kobj->sd, name, targ->sd->ns);  in sysfs_link_change_owner()
636 	if (!kn)  in sysfs_link_change_owner()
640 	if (kernfs_type(kn) != KERNFS_LINK)  in sysfs_link_change_owner()
642 	if (kn->symlink.target_kn->priv != targ)  in sysfs_link_change_owner()
645 	error = internal_change_owner(kn, kuid, kgid);  in sysfs_link_change_owner()
648 	kernfs_put(kn);  in sysfs_link_change_owner()
667 	struct kernfs_node *kn;  in sysfs_file_change_owner()  local
676 	kn = kernfs_find_and_get(kobj->sd, name);  in sysfs_file_change_owner()
677 	if (!kn)  in sysfs_file_change_owner()
680 	error = internal_change_owner(kn, kuid, kgid);  in sysfs_file_change_owner()
682 	kernfs_put(kn);  in sysfs_file_change_owner()