sysfs: Remove first pass at shadow directory support

While shadow directories appear to be a good idea, the current scheme
of controlling their creation and destruction outside of sysfs appears
to be a locking and maintenance nightmare in the face of sysfs
directories dynamically coming and going.  Which can now occur for
directories containing network devices when CONFIG_SYSFS_DEPRECATED is
not set.

This patch removes everything from the initial shadow directory support
that allowed the shadow directory creation to be controlled at a higher
level.  So except for a few bits of sysfs_rename_dir everything from
commit b592fcfe7f06c15ec11774b5be7ce0de3aa86e73 is now gone.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 38 deletions

diff --git a/lib/kobject.c b/lib/kobject.c
index 10ae2ebeaf96..e8181d3cec34 100644
--- 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, struct sysfs_dirent *shadow_parent)
+static int create_dir(struct kobject * kobj)
 {
         int error = 0;
         if (kobject_name(kobj)) {
-                error = sysfs_create_dir(kobj, shadow_parent);
+                error = sysfs_create_dir(kobj);
                 if (!error) {
                         if ((error = populate_dir(kobj)))
                                 sysfs_remove_dir(kobj);
@@ -157,12 +157,11 @@ static void unlink(struct kobject * kobj)
 }
 
 /**
- *      kobject_shadow_add - add an object to the hierarchy.
+ *      kobject_add - add an object to the hierarchy.
  *      @kobj:  object.
- *      @shadow_parent: sysfs directory to add to.
  */
 
-int kobject_shadow_add(struct kobject *kobj, struct sysfs_dirent *shadow_parent)
+int kobject_add(struct kobject * kobj)
 {
         int error = 0;
         struct kobject * parent;
@@ -194,7 +193,7 @@ int kobject_shadow_add(struct kobject *kobj, struct sysfs_dirent *shadow_parent)
                 kobj->parent = parent;
         }
 
-        error = create_dir(kobj, shadow_parent);
+        error = create_dir(kobj);
         if (error) {
                 /* unlink does the kobject_put() for us */
                 unlink(kobj);
@@ -216,16 +215,6 @@ int kobject_shadow_add(struct kobject *kobj, struct sysfs_dirent *shadow_parent)
 }
 
 /**
- *      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.
  *      @kobj:  object in question.
  */
@@ -334,7 +323,7 @@ int kobject_rename(struct kobject * kobj, const char *new_name)
         /* 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->sd, new_name);
+        error = sysfs_rename_dir(kobj, new_name);
 
         /* This function is mostly/only used for network interface.
          * Some hotplug package track interfaces by their name and
@@ -351,27 +340,6 @@ out:
 }
 
 /**
- *      kobject_rename - change the name of an object
- *      @kobj:  object in question.
- *      @new_parent: object's new parent
- *      @new_name: object's new name
- */
-
-int kobject_shadow_rename(struct kobject *kobj,
-                          struct sysfs_dirent *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;
-}
-
-/**
  *      kobject_move - move object to another parent
  *      @kobj:  object in question.
  *      @new_parent: object's new parent (can be NULL)