}
/**
- * kobject_add - add an object to the hierarchy.
+ * kobject_shadow_add - add an object to the hierarchy.
* @kobj: object.
* @shadow_parent: sysfs directory to add to.
*/
if (!*kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
+ kobject_put(kobj);
return -EINVAL;
}
parent = kobject_get(kobj->parent);
list_add_tail(&kobj->entry,&kobj->kset->list);
spin_unlock(&kobj->kset->list_lock);
+ kobj->parent = parent;
}
- kobj->parent = parent;
error = create_dir(kobj, shadow_parent);
if (error) {
int kobject_rename(struct kobject * kobj, const char *new_name)
{
int error = 0;
+ const char *devpath = NULL;
+ char *devpath_string = NULL;
+ char *envp[2];
kobj = kobject_get(kobj);
if (!kobj)
return -EINVAL;
if (!kobj->parent)
return -EINVAL;
+
+ devpath = kobject_get_path(kobj, GFP_KERNEL);
+ if (!devpath) {
+ error = -ENOMEM;
+ goto out;
+ }
+ devpath_string = kmalloc(strlen(devpath) + 15, GFP_KERNEL);
+ if (!devpath_string) {
+ error = -ENOMEM;
+ goto out;
+ }
+ sprintf(devpath_string, "DEVPATH_OLD=%s", devpath);
+ envp[0] = devpath_string;
+ envp[1] = NULL;
+ /* Note : if we want to send the new name alone, not the full path,
+ * we could probably use kobject_name(kobj); */
+
error = sysfs_rename_dir(kobj, kobj->parent->dentry, new_name);
+
+ /* This function is mostly/only used for network interface.
+ * Some hotplug package track interfaces by their name and
+ * therefore want to know when the name is changed by the user. */
+ if (!error)
+ kobject_uevent_env(kobj, KOBJ_MOVE, envp);
+
+out:
+ kfree(devpath_string);
+ kfree(devpath);
kobject_put(kobj);
return error;
goto out;
old_parent = kobj->parent;
kobj->parent = new_parent;
+ new_parent = NULL;
kobject_put(old_parent);
kobject_uevent_env(kobj, KOBJ_MOVE, envp);
out:
+ kobject_put(new_parent);
kobject_put(kobj);
kfree(devpath_string);
kfree(devpath);
};
/**
- * kobject_add_dir - add sub directory of object.
+ * kobject_kset_add_dir - add sub directory of object.
+ * @kset: kset the directory is belongs to.
* @parent: object in which a directory is created.
* @name: directory name.
*
* Add a plain directory object as child of given object.
*/
-struct kobject *kobject_add_dir(struct kobject *parent, const char *name)
+struct kobject *kobject_kset_add_dir(struct kset *kset,
+ struct kobject *parent, const char *name)
{
struct kobject *k;
int ret;
if (!k)
return NULL;
+ k->kset = kset;
k->parent = parent;
k->ktype = &dir_ktype;
kobject_set_name(k, name);
ret = kobject_register(k);
if (ret < 0) {
- printk(KERN_WARNING "kobject_add_dir: "
- "kobject_register error: %d\n", ret);
+ printk(KERN_WARNING "%s: kobject_register error: %d\n",
+ __func__, ret);
kobject_del(k);
return NULL;
}
return k;
}
+/**
+ * kobject_add_dir - add sub directory of object.
+ * @parent: object in which a directory is created.
+ * @name: directory name.
+ *
+ * Add a plain directory object as child of given object.
+ */
+struct kobject *kobject_add_dir(struct kobject *parent, const char *name)
+{
+ return kobject_kset_add_dir(NULL, parent, name);
+}
+
/**
* kset_init - initialize a kset for use
* @k: kset
/**
* kset_add - add a kset object to the hierarchy.
* @k: kset.
- *
- * Simply, this adds the kset's embedded kobject to the
- * hierarchy.
- * We also try to make sure that the kset's embedded kobject
- * has a parent before it is added. We only care if the embedded
- * kobject is not part of a kset itself, since kobject_add()
- * assigns a parent in that case.
- * If that is the case, and the kset has a controlling subsystem,
- * then we set the kset's parent to be said subsystem.
*/
int kset_add(struct kset * k)
{
- if (!k->kobj.parent && !k->kobj.kset && k->subsys)
- k->kobj.parent = &k->subsys->kset.kobj;
-
return kobject_add(&k->kobj);
}
return ret;
}
-
-void subsystem_init(struct subsystem * s)
+void subsystem_init(struct kset *s)
{
- init_rwsem(&s->rwsem);
- kset_init(&s->kset);
+ kset_init(s);
}
-/**
- * subsystem_register - register a subsystem.
- * @s: the subsystem we're registering.
- *
- * Once we register the subsystem, we want to make sure that
- * the kset points back to this subsystem for correct usage of
- * the rwsem.
- */
-
-int subsystem_register(struct subsystem * s)
+int subsystem_register(struct kset *s)
{
- int error;
-
- if (!s)
- return -EINVAL;
-
- subsystem_init(s);
- pr_debug("subsystem %s: registering\n",s->kset.kobj.name);
-
- if (!(error = kset_add(&s->kset))) {
- if (!s->kset.subsys)
- s->kset.subsys = s;
- }
- return error;
+ return kset_register(s);
}
-void subsystem_unregister(struct subsystem * s)
+void subsystem_unregister(struct kset *s)
{
- if (!s)
- return;
- pr_debug("subsystem %s: unregistering\n",s->kset.kobj.name);
- kset_unregister(&s->kset);
+ kset_unregister(s);
}
-
/**
* subsystem_create_file - export sysfs attribute file.
* @s: subsystem.
* @a: subsystem attribute descriptor.
*/
-int subsys_create_file(struct subsystem * s, struct subsys_attribute * a)
+int subsys_create_file(struct kset *s, struct subsys_attribute *a)
{
int error = 0;
return -EINVAL;
if (subsys_get(s)) {
- error = sysfs_create_file(&s->kset.kobj,&a->attr);
+ error = sysfs_create_file(&s->kobj, &a->attr);
subsys_put(s);
}
return error;
}
-
-/**
- * subsystem_remove_file - remove sysfs attribute file.
- * @s: subsystem.
- * @a: attribute desciptor.
- */
-#if 0
-void subsys_remove_file(struct subsystem * s, struct subsys_attribute * a)
-{
- if (subsys_get(s)) {
- sysfs_remove_file(&s->kset.kobj,&a->attr);
- subsys_put(s);
- }
-}
-#endif /* 0 */
-
EXPORT_SYMBOL(kobject_init);
EXPORT_SYMBOL(kobject_register);
EXPORT_SYMBOL(kobject_unregister);
git.samba.org / sfrench / cifs-2.6.git / blobdiff