sysfs: Shadow directory support

[powerpc.git] / lib / kobject.c

diff --git a/lib/kobject.c b/lib/kobject.c
index 74b8dbc..c2917ff 100644 (file)
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -44,11 +44,11 @@ static int populate_dir(struct kobject * kobj)
        return error;
 }
 
-static int create_dir(struct kobject * kobj)
+static int create_dir(struct kobject * kobj, struct dentry *shadow_parent)
 {
        int error = 0;
        if (kobject_name(kobj)) {
-               error = sysfs_create_dir(kobj);
+               error = sysfs_create_dir(kobj, shadow_parent);
                if (!error) {
                        if ((error = populate_dir(kobj)))
                                sysfs_remove_dir(kobj);
@@ -158,9 +158,10 @@ static void unlink(struct kobject * kobj)
 /**
  *     kobject_add - add an object to the hierarchy.
  *     @kobj:  object.
+ *     @shadow_parent: sysfs directory to add to.
  */
 
-int kobject_add(struct kobject * kobj)
+int kobject_shadow_add(struct kobject * kobj, struct dentry *shadow_parent)
 {
        int error = 0;
        struct kobject * parent;
@@ -191,7 +192,7 @@ int kobject_add(struct kobject * kobj)
        }
        kobj->parent = parent;
 
-       error = create_dir(kobj);
+       error = create_dir(kobj, shadow_parent);
        if (error) {
                /* unlink does the kobject_put() for us */
                unlink(kobj);
@@ -212,6 +213,15 @@ int kobject_add(struct kobject * kobj)
        return error;
 }
 
+/**
+ *     kobject_add - add an object to the hierarchy.
+ *     @kobj:  object.
+ */
+int kobject_add(struct kobject * kobj)
+{
+       return kobject_shadow_add(kobj, NULL);
+}
+
 
 /**
  *     kobject_register - initialize and add an object.
@@ -304,7 +314,29 @@ int kobject_rename(struct kobject * kobj, const char *new_name)
        kobj = kobject_get(kobj);
        if (!kobj)
                return -EINVAL;
-       error = sysfs_rename_dir(kobj, new_name);
+       if (!kobj->parent)
+               return -EINVAL;
+       error = sysfs_rename_dir(kobj, kobj->parent->dentry, new_name);
+       kobject_put(kobj);
+
+       return error;
+}
+
+/**
+ *     kobject_rename - change the name of an object
+ *     @kobj:  object in question.
+ *     @new_name: object's new name
+ */
+
+int kobject_shadow_rename(struct kobject * kobj, struct dentry *new_parent,
+                         const char *new_name)
+{
+       int error = 0;
+
+       kobj = kobject_get(kobj);
+       if (!kobj)
+               return -EINVAL;
+       error = sysfs_rename_dir(kobj, new_parent, new_name);
        kobject_put(kobj);
 
        return error;