kobj: Add basic infrastructure for dealing with namespaces.

Move complete knowledge of namespaces into the kobject layer
so we can use that information when reporting kobjects to
userspace.

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

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 9c6a0d6408e7..8e231d05b400 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -63,6 +63,14 @@ static void class_release(struct kobject *kobj)
         kfree(cp);
 }
 
+static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject *kobj)
+{
+        struct class_private *cp = to_class(kobj);
+        struct class *class = cp->class;
+
+        return class->ns_type;
+}
+
 static const struct sysfs_ops class_sysfs_ops = {
         .show   = class_attr_show,
         .store  = class_attr_store,
@@ -71,6 +79,7 @@ static const struct sysfs_ops class_sysfs_ops = {
 static struct kobj_type class_ktype = {
         .sysfs_ops      = &class_sysfs_ops,
         .release        = class_release,
+        .child_ns_type  = class_child_ns_type,
 };
 
 /* Hotplug events for classes go to the class class_subsys */